Mesoridazine

Brand names: Serentil®

Chemical formula:

Drug Forms:
• Mesoridazine tablets (below)
• Mesoridazine oral concentrate
• Mesoridazine injection

Español:
• Tabletas de mesoridazina
• Concentrado oral de mesoridazina
• Inyección de mesoridazina

Mesoridazine tablets

What are mesoridazine tablets?

MESORIDAZINE (Serentil®) treats conditions such as schizophrenia that cause you to hear or see things that others do not. It may also help treat some other emotional or nervous problems. Generic mesoridazine tablets are not yet available.

NOTE: This drug is discontinued in the United States.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:
• an alcohol abuse problem
• blood disease
• cancer
• difficulty urinating
• glaucoma
• head injury
• heart, kidney, or liver disease
• lung disease
• Parkinson's disease
• prostate trouble
• Reye's syndrome
• seizures (convulsions)
• tardive dyskinesia (uncontrollable movement disorder)
• thoughts of suicide
• vision problems
• an unusual or allergic reaction to mesoridazine, other medicines, foods, dyes, or preservatives
• pregnant or trying to get pregnant
• breast-feeding

How should I take this medicine?

Take mesoridazine tablets by mouth. Follow the directions on the prescription label. Swallow the tablets with a drink of water. If mesoridazine upsets your stomach you can take it with food. Take your doses at regular intervals. Do not take your medicine more often than directed. Do not stop taking except on your prescriber's advice.

Contact your pediatrician or health care professional regarding the use of this medicine in children. Special care may be needed.

Elderly patients may have a stronger reaction to this medicine and need smaller doses.

What drug(s) may interact with mesoridazine?

Do not take mesoridazine with any of the following:
• some antibiotics (clarithromycin, erythromycin, gatifloxacin, grepafloxacin, moxifloxacin, sparfloxacin)
• some antidepressants (amoxapine, maprotiline)
• arsenic trioxide
• astemizole
• bepridil
• cisapride
• daunorubicin or doxorubicin
• diltiazem
• some medicines for treating heart-rhythm problems (amiodarone, flecainide, disopyramide, dofetilide, ibutilide, procainamide, quinidine, sotalol)
• pimozide
• probucol
• terfenadine
• terodiline
• verapamil
Mesoridazine may also interact with the following medications:
• alcohol
• antacids
• antidiarrheal medications
• atropine
• benztropine
• bromocriptine
• cabergoline
• cocaine
• dextroamphetamine or amphetamine
• dronabinol or marijuana
• lithium
• meclizine
• medicines for anxiety
• medicines for an over-active thyroid gland
• medicines for colds and flu
• medicines for insomnia (difficulty sleeping)
• medicines for hay fever and other allergies
• medicines for mental depression
• medicines for movement abnormalities as in Parkinson's disease
• medications for treating seizures (convulsions)
• medicines for pain or for use as muscle relaxants, including tramadol
• medicines to treat urine or bladder incontinence
• metoclopramide
• other medicines for treating thought disorders such as schizophrenia
• quinine
• rifampin
• some medications for high blood pressure or heart problems
• some weight loss medications
• trihexyphenidyl
• vitamin A

Tell your prescriber or health care professional about all other medicines you are taking, including non-prescription medicines. Also tell your prescriber or health care professional if you are a frequent user of drinks with caffeine or alcohol, if you smoke, or if you use illegal drugs. These may affect the way your medicine works. Check with your health care professional before stopping or starting any of your medicines.

What should I watch for while taking mesoridazine?

Visit your prescriber or health care professional for regular checks on your progress. It may be several weeks before you see the full effects of mesoridazine. Do not suddenly stop taking mesoridazine. Your doctor may want you to gradually reduce the dose. Only stop taking mesoridazine on your prescriber's advice.

Mesoridazine may cause your skin to become more sensitive to the sun or ultraviolet light. If this reaction occurs, it can cause a severe sunburn and damage the skin. Keep out of the sun, or wear protective clothing outdoors and use a sunscreen (at least SPF 15). Do not use sun lamps or sun tanning beds or booths. Wear sunglasses to protect your eyes.

Mesoridazine can change the response of your body to heat or cold. Try not to get overheated. Avoid temperature extremes, such as saunas, hot tubs, or very hot or cold baths or showers. Dress warmly in cold weather.

If you experience dry mouth while taking mesoridazine, make sure to drink plenty of water. It may also be helpful to suck on sugarless hard candy or crushed ice. If your dry mouth is severe, ask your doctor about a saliva substitute.

You may get dizzy or drowsy. Do not drive, use machinery, or do anything that needs mental alertness until you know how mesoridazine affects you. Alcohol can increase dizziness and drowsiness. Avoid alcoholic drinks. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells.

If you are going to have surgery or will need a procedure that uses contrast agents, tell your prescriber or health care professional that you are taking this medicine.

What side effects may I notice from taking mesoridazine?

Side effects that you should report to your prescriber or health care professional as soon as possible:
• breast enlargement in men or women
• breast milk in women who are not breast-feeding
• change in emotion or behavior such as feeling depressed, angry, or anxious
• change in vision
• chest pain, fast or irregular heartbeat
• confusion
• dark yellow or brown urine
• difficulty breathing
• difficulty swallowing
• fever
• inability to control muscle movements in the face, hands, arms, or legs
• increased thirst
• intolerance to heat or cold
• loss of balance or difficulty walking
• menstrual changes
• seizures
• stiff muscles or jaw
• seizures
• skin rash
• spasms of the face, tongue, or mouth
• uncontrollable tongue or mouth movements

Side effects that usually do not require medical attention (report to your prescriber or health care professional if they continue or are bothersome):
Less common or rare:
• changes in sexual desire
• excessive watering or drooling of mouth
• nausea or vomiting
• restlessness or need to keep moving
• stuffy nose
• trouble in controlling urine
More Common:
• constipation
• difficulty urinating
• dizziness; especially on standing from a sitting or lying position
• drowsiness
• dry mouth
• weight gain

Where can I keep my medicine?

Keep out of the reach of children in a container that small children cannot open.

Store at room temperature between 20 degrees and 25 degrees C (68 degrees and 77 degrees F). Throw away any unused medicine after the expiration date.

Last updated: 7/1/2002

Important Disclaimer: The drug information provided here is for educational purposes only. It is intended to supplement, not substitute for, the diagnosis, treatment and advice of a medical professional. This drug information does not cover all possible uses, precautions, side effects and interactions. It should not be construed to indicate that this or any drug is safe for you. Consult your medical professional for guidance before using any prescription or over the counter drugs.

Mesoridazine

Systematic (IUPAC) name
10-{2-[(RS)1-Methylpiperidin-2-yl]ethyl}- 2-methylsulfinyl- 10H-phenothiazine
Identifiers
CAS number	5588-33-0
ATC code	N05AC03
PubChem	4078
DrugBank	APRD00610
Chemical data
Formula	C21H26N2OS2
Mol. mass	386.576 g/mol
Pharmacokinetic data
Bioavailability	?
Protein binding	4%
Metabolism	Hepatic/Renal
Half life	24 to 48 hours
Excretion	Biliary and renal
Therapeutic considerations
Pregnancy cat.	C(US)
Legal status	℞ Prescription only
Routes	oral, intravenous
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Mesoridazine (sold as Serentil) is a piperidine neuroleptic drug belonging to the class of drugs called phenothiazines, used in the treatment of schizophrenia. It is a metabolite of thioridazine. The name is partially derived from the MEthyl-SulfOxy group in the structure.

It has central antiadrenergic, antidopaminergic, antiserotonergic and minor muscarinic anticholinergic effects.

Serious side effects include akathisia, tardive dyskinesia and the potentially fatal neuroleptic malignant syndrome.

Warning:Mesoridazine was withdrawn from the United States market in 2004 due to dangerous side effects, namely irregular heart beat and QT-prolongation of the electrocardiogram. ^[1]

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References

1. ^ [1]

v • d • e Psycholeptics: Antipsychotics (N05A) Typicals (EPS) Phenothiazines aliphatics: Chlorpromazine# • Promazine • Triflupromazine piperidines: Mesoridazine • Thioridazine/Sulforidazine • Periciazine piperazines: Fluphenazine# • Perphenazine • Prochlorperazine • Trifluoperazine • Perazine Butyrophenones Haloperidol# • Azaperone • Benperidol • Bromperidol • Droperidol • Fluanisone • Trifluperidol Indoles Molindone Thioxanthenes Flupentixol • Chlorprothixene • Thiothixene • Zuclopenthixol Diphenylbutylpiperidines Fluspirilene • Penfluridol • Pimozide Benzamides Amisulpride • Sulpiride • Remoxipride Others Amoxapine • Loxapine Atypicals (5HT) D2 selective Butyrophenones Melperone Indoles Sertindole • Ziprasidone Other Quinolone (Aripiprazole) • Oxepin (Asenapine) • Isoxazole (Iloperidone, Paliperidone, Risperidone) • Benzazepine (Mosapramine) • Thiazole (Perospirone) • Dibenzothiazepine (Quetiapine) • Dibenzothiepin (Zotepine) • Lurasidone† D4 selective diazepine (Clozapine, Olanzapine) #WHO-EM. ‡Withdrawn from market. CLINICAL TRIALS: †Phase III. §Never to phase III

v • d • e Adrenergics Receptor Ligands α α1 Agonists: Amidephrine • Cirazoline • Dopamine • Epinephrine (Adrenaline) • Etilefrine • Isoprenaline • Levonordefrin • Metaraminol • Methoxamine • Methyldopa • Norepinephrine (Noradrenaline) • Oxymetazoline • Phenylephrine Antagonists: Alfuzosin • Arotinolol • Carvedilol • Doxazosin • Indoramin • L-765,314 • Labetalol • Moxisylyte • Nantenine • Phentolamine • Phenoxybenzamine • Prazosin • Silodosin • Tamsulosin • Terazosin • Tolazoline • Trimazosin • Urapidil α2 Agonists: (R)-3-Nitrobiphenyline • 4-NEMD • Amitraz • Apraclonidine • Brimonidine • Clonidine • Detomidine • Dexmedetomidine • Dopamine • Epinephrine (Adrenaline) • Etilefrine • Guanabenz • Guanfacine • Guanethidine • Guanoxabenz • Levonordefrin • Lofexidine • Medetomidine • Methyldopa • Norepinephrine (Noradrenaline) • Octopamine • Romifidine • Tizanidine • Tolonidine • Xylazine • Xylometazoline Antagonists: 1-PP • Atipamezole • BRL-44408 • Buspirone • Cirazoline • Efaroxan • Gepirone • Idazoxan • Ipsapirone • Mianserin • Mirtazapine • NAN-190 • Phentolamine • Phenoxybenzamine • Rauwolscine • SB-269,970 • Setiptiline • Spiroxatrine • Tandospirone • Tolazoline • Yohimbine α? Agonists: Anisodamine • Ephedrine • Ergotamine • Indanidine • Mephentermine • Midodrine • Mivazerol • Naphazoline • Phenylpropanolamine • Pseudoephedrine • Rilmenidine • Synephrine • Talipexole • Tetrahydrozoline β β1 Agonists: Denopamine • Dobutamine • Dopamine • Epinephrine (Adrenaline) • Etilefrine • Levonordefrin • Methyldopa • Norepinephrine (Noradrenaline) Antagonists: Acebutolol • Alprenolol • Amosulalol • Arotinolol • Atenolol • Bupranolol • Carvedilol • Celiprolol • Betaxolol • Bisoprolol • Dichloroisoprenaline • Esmolol • Labetalol • Metipranolol • Metoprolol • Nadolol • Nebivolol • Oxprenolol • Penbutolol • Pindolol • Practolol • Pronethalol • Propranolol • Sotalol • Tertatolol • Timolol • Tilisolol • Xamoterol β2 Agonists: Arformoterol • Bambuterol • Bitolterol • Carbuterol • Clenbuterol • Dopamine • Dopexamine • Epinephrine (Adrenaline) • Etilefrine • Fenoterol • Formoterol • Hexoprenaline • Indacaterol • Levonordefrin • Levosalbutamol • Methyldopa • Norepinephrine (Noradrenaline) • Orciprenaline • Pirbuterol • Procaterol • Reproterol • Rimiterol • Ritodrine • Salbutamol (Albuterol) • Salmeterol • Terbutaline • Tulobuterol Antagonists: Alprenolol • Amosulalol • Arotinolol • Bupranolol • Butaxamine • Carvedilol • Dichloroisoprenaline • ICI 118551 • Labetalol • Metipranolol • Nadolol • Oxprenolol • Penbutolol • Pindolol • Pronethalol • Propranolol • Sotalol • Tertatolol • Timolol • Tilisolol β3 Agonists: Amibegron • Arotinolol • Dopamine • Epinephrine (Adrenaline) • Etilefrine • Labetalol • Levonordefrin • Methyldopa • Norepinephrine (Noradrenaline) • Solabegron Antagonists: Carvedilol • SR 59230A β? Agonists: Arbutamine • BAAM • Befunolol • Broxaterol • Buphenine • Cimaterol • Ephedrine • Higenamine • Isoetarine • Isoxsuprine • Mabuterol • Methoxyphenamine • Oxyfedrine • Prenalterol • Pseudoephedrine • Ractopamine • Tretoquinol • Zilpaterol • Zinterol Reuptake Inhibitors Plasmalemmal NET Inhibitors Norepinephrine Reuptake Inhibitors: Atomoxetine (Tomoxetine) • Ciclazindol • Mazindol • Nisoxetine • Reboxetine • Tandamine • Tapentadol • Viloxazine; Norepinephrine-Dopamine Reuptake Inhibitors: Amineptine • Bupropion (Amfebutamone) • Fencamine • Fencamfamine • Lefetamine • LR-5182 • Manifaxine • Methylphenidate • Nomifensine • O-2172 • Radafaxine; Serotonin-Norepinephrine Reuptake Inhibitors: Bicifadine • Desvenlafaxine • Duloxetine • Milnacipran • Sibutramine • Tramadol • Venlafaxine; Serotonin-Norepinephrine-Dopamine Reuptake Inhibitors: Brasofensine • Diclofensine • DOV-102,677 • DOV-21,947 • DOV-216,303 • JNJ-7925476 • JZ-IV-10 • Methylnaphthidate • Naphyrone • NS-2359 • PRC200-SS • SEP-225,289 • SEP-227,162 • Tesofensine; Tricyclic Antidepressants: Amitriptyline • Butriptyline • Cianopramine • Clomipramine • Desipramine • Dosulepin • Doxepin • Imipramine • Lofepramine • Nortriptyline • Protriptyline • Trimipramine; Tetracyclic Antidepressants: Amoxapine • Maprotiline • Mianserin • Oxaprotiline; Others: Cocaine • Nefazodone • Nefopam • Ziprasidone TRPC6 Activators Adhyperforin • Hyperforin Vesicular VMAT Inhibitors Ibogaine • Reserpine • Tetrabenazine Releasing Agents Oxazolines: 4-Methylaminorex (4-MAR, 4-MAX) • Aminorex • Clominorex • Cyclazodone • Fenozolone • Fluminorex • Pemoline • Thozalinone; Phenethylamines (also Amphetamines, Cathinones, Phentermines, etc): 2-Hydroxyphenethylamine (2-OH-PEA) • 4-Methylamphetamine (4-MA) • 4-Methylmethamphetamine (4-MMA) • Alfetamine • Amphetamine (Dextroamphetamine, Levoamphetamine) • Amphetaminil • Amfepentorex • β-Methylphenethylamine (β-Me-PEA) • Benzodioxolylbutanamine (BDB) • Benzodioxolylhydroxybutanamine (BOH) • Benzphetamine • Buphedrone • Butylone • Cathine • Cathinone • Clobenzorex • Clortermine • Diethylcathinone (Diethylpropion, Amfepramone) • Dimethoxyamphetamine (DMA) • Dimethoxymethamphetamine (DMMA) • Dimethylamphetamine • Dimethylcathinone (Dimethylpropion, Metamfepramone) • Ephedrine (EPH) • Ethcathinone (Ethylpropion) • Ethylamphetamine • Ethylbenzodioxolylbutanamine (EBDB) • Ethylone • Fenethylline • Fenproporex • Flephedrone • Fludorex • Furfenorex • Hordenine • Indanorex • Indanylamphetamine (IAP) • Lisdexamfetamine • Lophophine (Homomyristicylamine) • Mefenorex • Mephedrone • Mephentermine • Methamphetamine (Desoxyephedrine, Methedrine; Dextromethamphetamine, Levomethamphetamine) • Methcathinone (Methylpropion) • Methedrone • Methoxymethylenedioxyamphetamine (MMDA) • Methoxymethylenedioxymethamphetamine (MMDMA) • Methylbenzodioxolylbutanamine (MBDB) • Methylenedioxyamphetamine (MDA; Tenamfetamine) • Methylenedioxyethylamphetamine (MDEA) • Methylenedioxyhydroxyamphetamine (MDOH) • Methylenedioxymethamphetamine (MDMA) • Methylenedioxymethylphenethylamine (MDMPEA; Homarylamine) • Methylenedioxyphenethylamine (MDPEA; Homopiperonylamine) • Methylone • Naphthylamphetamine (NAP) • Ortetamine • Oxaflozane • Parabromoamphetamine (PBA) • Parachloroamphetamine (PCA) • Parafluoroamphetamine (PFA) • Parafluoromethamphetamine (PFMA) • Parahydroxyamphetamine (PHA) • Paraiodoamphetamine (PIA) • Paramethoxyamphetamine (PMA) • Paramethoxyethylamphetamine (PMEA) • Paramethoxymethamphetamine (PMMA) • Paredrine (Norpholedrine, Oxamphetamine) • Phendimetrazine • Phenethylamine (PEA) • Phenmetrazine • Pholedrine • Phenpentermine • Phenpromethamine • Phentermine • Phenylpropanolamine (PPA) • Propylamphetamine • Pseudoephedrine (PSE) • Tiflorex (Flutiorex) • Tyramine (TRA) • Xylopropamine • Zylofuramine; Piperazines: 2,5-Dimethoxy-4-bromobenzylpiperazine (2C-B-BZP) • Benzylpiperazine (BZP) • Methoxyphenylpiperazine (MeOPP; Paraperazine) • Methylbenzylpiperazine (MBZP) • Methylenedioxybenzylpiperazine (MDBZP; Piperonylpiperazine) • Parafluorophenylpiperazine (pFPP; Fluoperazine); Others: 2-Aminoindane (2-AI) • 2-Aminotetralin (2-AT) • 2-Benzylpiperidine (2-BP) • 4-Benzylpiperidine (4-BP) • Clofenciclan • Cyclopentamine • Cypenamine • Cyprodenate • Feprosidnine • Gilutensin • Heptaminol • Hexacyclonate • Isometheptene • Methylhexanamine • Octodrine • Phthalimidopropiophenone • Propylhexedrine (PHX) • Tuaminoheptane (Tuamine) Enzyme Inhibitors Anabolism PAH Inhibitors 3,4-Dihydroxystyrene TH Inhibitors 3-Iodotyrosine • Aquayamycin • Bulbocapnine • Metirosine • Oudenone AAAD Inhibitors Benserazide • Carbidopa DBH Inhibitors Disulfiram • Nepicastat • Tropolone PNMT Inhibitors CGS-19281A • SKF-64139 • SKF-7698 Catabolism MAO Inhibitors Nonselective: Etryptamine • Furazolidone • Hydralazine • Iproclozide • Iproniazid • Isocarboxazid • Isoniazid • Linezolid • Mebanazine • Metryptamine • Nialamide • Phenelzine • Pheniprazine • Phenoxypropazine • Pivalylbenzhydrazine • Procarbazine • Safrazine • Tranylcypromine; MAO-A Selective: Befloxatone • Brofaromine • Cimoxatone • Clorgiline • Harmala Alkaloids (Harmine, Harmaline, Tetrahydroharmine, etc) • Minaprine • Moclobemide • Pirlindole • Toloxatone • Tyrima; MAO-B Selective: Lazabemide • Pargyline • Rasagiline • Selegiline * Note that MAO-B inhibitors also influence norepinephrine/epinephrine levels since they inhibit the breakdown of their precursor dopamine. COMT Inhibitors Entacapone • Tolcapone Others Precursors L-Phenylalanine → L-Tyrosine → L-DOPA (Levodopa) → Dopamine • L-DOPS (Droxidopa) Cofactors Ferrous Iron (Fe2+) • S-Adenosyl-L-Methionine • Vitamin B3 (Niacin, Nicotinamide → NADPH) • Vitamin B6 (Pyridoxine, Pyridoxamine, Pyridoxal → Pyridoxal Phosphate) • Vitamin B9 (Folic Acid → Tetrahydrofolic Acid) • Vitamin C (Ascorbic Acid) • Zinc (Zn2+) Others Activity Enhancers: Benzofuranylpropylaminopentane (BPAP) • Phenylpropylaminopentane (PPAP); Release Blockers: Bretylium • Guanethidine

v • d • e Dopaminergics Receptor Ligands Agonists Benzazepines: 6-Br-APB • Fenoldopam • SKF-38,393 • SKF-77,434 • SKF-81,297 • SKF-82,958 • SKF-83,959; Ergot-derivatives: Bromocriptine • Cabergoline • Dihydroergocryptine • Lisuride • LSD • Pergolide; Dihydrexidine-derivatives: 2-OH-NPA • A-86,929 • Dihydrexidine • Dinapsoline • Dinoxyline • Doxanthrine; Morphine-derivatives: Apomorphine • Propylnorapomorphine; Piperazines: ABT-724 • Aripiprazole • Piribedil • WAY-100,635; Others: 7-OH-DPAT • 8-OH-PBZI • A-68,930 • A-77,636 • A-412,997 • ABT-670 • Amantadine • Aplindore • CY-208,243 • Memantine • PD-128,907 • PF-219,061 • Pramipexole • Pukateine • Quinpirole • RDS-127 • Rimantadine • Ropinirole • Rotigotine • SKF-89145 • SKF-89626 Antagonists Typical Antipsychotics: Acepromazine • Azaperone • Benperidol • Bromperidol • Clopenthixol • Chlorpromazine • Chlorprothixene • Droperidol • Flupentixol • Fluphenazine • Fluspirilene • Haloperidol • Loxapine • Mesoridazine • Methotrimeprazine • Molindone • Penfluridol • Perazine • Periciazine • Perphenazine • Pimozide • Prochlorperazine • Promazine • Sulforidazine • Thioridazine • Thiothixene • Trifluoperazine • Triflupromazine • Trifluperidol • Zuclopenthixol; Atypical Antipsychotics: Amisulpride • Asenapine • Clozapine • Iloperidone • Melperone • Olanzapine • Paliperidone • Perospirone • Quetiapine • Risperidone • Sertindole • Sulpiride • Ziprasidone • Zotepine; Antiemetics: AS-8112 • Alizapride • Bromopride • Clebopride • Domperidone • Metoclopramide • Thiethylperazine; Others: Amoxapine • Blonanserin • Buspirone • Butaclamol • N-Ethoxycarbonyl-2-ethoxy-1,2-dihydroquinoline • Ecopipam • Eticlopride • Fananserin • Mosapramine • Nafadotride • Nemonapride • Nuciferine • Raclopride • Remoxipride • SB-277,011-A • SCH-23,390 • SKF-83,566 • Spiperone • Spiroxatrine • Stepholidine • Tetrahydropalmatine • Tiapride • UH-232 • Yohimbine Reuptake Inhibitors Plasmalemmal DAT Inhibitors Piperazines: DBL-583 • GBR-12,935 • Nefazodone • Vanoxerine; Piperidines: BTCP • Desoxypipradrol • Dextromethylphenidate • Ethylphenidate • Methylnaphthidate • Methylphenidate • Phencyclidine • Pipradrol; Pyrrolidines: Diphenylprolinol • Methylenedioxypyrovalerone (MDPV) • Naphyrone • Prolintane • Pyrovalerone; Tropanes: β-CPPIT • Altropane • Brasofensine • CFT • Cocaine • Dichloropane • Difluoropine • FE-β-CPPIT • FP-β-CPPIT • Ioflupane (123I) • Iometopane • RTI-112 • RTI-113 • RTI-121 • RTI-126 • RTI-150 • RTI-177 • RTI-336 • Tenocyclidine • Tesofensine • Troparil • Tropoxane • WF-11 • WF-23 • WF-31 • WF-33; Others: Amfonelic Acid • Amineptine • Benzatropine • Bromantane • BTQ • BTS-74,398 • Bupropion (Amfebutamone) • Diclofensine • Dimethocaine • Dizocilpine • DOV-102,677 • DOV-21,947 • DOV-216,303 • Etybenzatropine • Fencamine • Fencamfamine • GYKI-52,895 • Indatraline • Ketamine • Lefetamine • LR-5182 • Manifaxine • Medifoxamine • Mesocarb • Nefopam • Nomifensine • NS-2359 • O-2172 • Propylamphetamine • Radafaxine • SEP-225,289 • SEP-227,162 • Sibutramine • Tametraline • Tripelennamine TRPC6 Activators Adhyperforin • Hyperforin Vesicular VMAT Inhibitors Deserpidine • Ibogaine • Reserpine • Tetrabenazine Releasing Agents Oxazolines: 4-Methylaminorex (4-MAR, 4-MAX) • Aminorex • Clominorex • Cyclazodone • Fenozolone • Fluminorex • Pemoline • Thozalinone; Phenethylamines (also Amphetamines, Cathinones, Phentermines, etc): 2-Hydroxyphenethylamine (2-OH-PEA) • 4-Methylamphetamine (4-MA) • 4-Methylmethamphetamine (4-MMA) • Alfetamine • Amphetamine (Dextroamphetamine, Levoamphetamine) • Amphetaminil • Amfepentorex • β-Methylphenethylamine (β-Me-PEA) • Benzodioxolylbutanamine (BDB) • Benzodioxolylhydroxybutanamine (BOH) • Benzphetamine • Buphedrone • Butylone • Cathine • Cathinone • Clobenzorex • Clortermine • Diethylcathinone (Diethylpropion, Amfepramone) • Dimethoxyamphetamine (DMA) • Dimethoxymethamphetamine (DMMA) • Dimethylamphetamine • Dimethylcathinone (Dimethylpropion, Metamfepramone) • Ethcathinone (Ethylpropion) • Ethylamphetamine • Ethylbenzodioxolylbutanamine (EBDB) • Ethylone • Fenethylline • Fenproporex • Flephedrone • Fludorex • Furfenorex • Hordenine • Indanorex • Indanylamphetamine (IAP) • Lophophine (Homomyristicylamine) • Mefenorex • Mephedrone • Methamphetamine (Desoxyephedrine, Methedrine; Dextromethamphetamine, Levomethamphetamine) • Methcathinone (Methylpropion) • Methedrone • Methoxymethylenedioxyamphetamine (MMDA) • Methoxymethylenedioxymethamphetamine (MMDMA) • Methylbenzodioxolylbutanamine (MBDB) • Methylenedioxyamphetamine (MDA; Tenamfetamine) • Methylenedioxyethylamphetamine (MDEA) • Methylenedioxyhydroxyamphetamine (MDOH) • Methylenedioxymethamphetamine (MDMA) • Methylenedioxymethylphenethylamine (MDMPEA; Homarylamine) • Methylenedioxyphenethylamine (MDPEA; Homopiperonylamine) • Methylone • Naphthylamphetamine (NAP) • Ortetamine • Oxaflozane • Parabromoamphetamine (PBA) • Parachloroamphetamine (PCA) • Parafluoroamphetamine (PFA) • Parafluoromethamphetamine (PFMA) • Parahydroxyamphetamine (PHA) • Paraiodoamphetamine (PIA) • Paramethoxyamphetamine (PMA) • Paramethoxyethylamphetamine (PMEA) • Paramethoxymethamphetamine (PMMA) • Paredrine (Norpholedrine, Oxamphetamine) • Phendimetrazine • Phenethylamine (PEA) • Phenmetrazine • Pholedrine • Phenpromethamine • Propylamphetamine • Tiflorex (Flutiorex) • Tyramine (TRA) • Xylopropamine • Zylofuramine; Piperazines: 2,5-Dimethoxy-4-bromobenzylpiperazine (2C-B-BZP) • Benzylpiperazine (BZP) • Methoxyphenylpiperazine (MeOPP; Paraperazine) • Methylbenzylpiperazine (MBZP) • Methylenedioxybenzylpiperazine (MDBZP; Piperonylpiperazine); Others: 2-Aminoindane (2-AI) • 2-Aminotetralin (2-AT) • 4-Benzylpiperidine (4-BP) • Clofenciclan • Cyclopentamine • Cypenamine • Cyprodenate • Feprosidnine • Gilutensin • Heptaminol • Hexacyclonate • Isometheptene • Methylhexanamine • Octodrine • Phthalimidopropiophenone • Propylhexedrine (PHX) • Tuaminoheptane (Tuamine) Enzyme Inhibitors Anabolism PAH Inhibitors 3,4-Dihydroxystyrene TH Inhibitors 3-Iodotyrosine • Aquayamycin • Bulbocapnine • Metirosine • Oudenone AAAD / DDC Inhibitors Benserazide • Carbidopa • Methyldopa Catabolism MAO Inhibitors Nonselective: Etryptamine • Furazolidone • Hydralazine • Iproclozide • Iproniazid • Isocarboxazid • Isoniazid • Linezolid • Mebanazine • Metryptamine • Nialamide • Phenelzine • Pheniprazine • Phenoxypropazine • Pivalylbenzhydrazine • Procarbazine • Safrazine • Tranylcypromine; MAO-A Selective: Befloxatone • Brofaromine • Cimoxatone • Clorgiline • Harmala Alkaloids (Harmine, Harmaline, Tetrahydroharmine, etc) • Minaprine • Moclobemide • Pirlindole • Toloxatone • Tyrima; MAO-B Selective: Lazabemide • Pargyline • Rasagiline • Selegiline COMT Inhibitors Entacapone • Tolcapone DBH Inhibitors Disulfiram • Nepicastat • Tropolone Others Precursors L-Phenylalanine → L-Tyrosine → L-DOPA (Levodopa) Cofactors Ferrous Iron (Fe2+) • Tetrahydrobiopterin • Vitamin B3 (Niacin, Nicotinamide → NADPH) • Vitamin B6 (Pyridoxine, Pyridoxamine, Pyridoxal → Pyridoxal Phosphate) • Vitamin B9 (Folic Acid → Tetrahydrofolic Acid) • Vitamin C (Ascorbic Acid) • Zinc (Zn2+) Others Activity Enhancers: Benzofuranylpropylaminopentane (BPAP) • Phenylpropylaminopentane (PPAP)

v • d • e Histaminergics Receptor Ligands H1 Agonists: 2-Pyridylethylamine • Betahistine • Histamine • HTMT • UR-AK49 Antagonists: 1st Generation: Alimemazine • Azatadine • Bamipine • Bepotastine • Bromazine • Brompheniramine • Buclizine • Carbinoxamine • Chlorcyclizine • Chloropyramine • Chlorothen • Chlorpheniramine • Chlorphenoxamine • Cinnarizine • Clemastine • Clobenzepam • Clocinizine • Cyclizine • Cyproheptadine • Dacemazine • Deptropine • Dexbrompheniramine • Dexchlorpheniramine • Dimetindene • Diphenhydramine • Diphenylpyraline • Doxylamine • Embramine • Etymemazine • Histapyrrodine • Hydroxyethylpromethazine • Hydroxyzine • Iproheptine • Isopromethazine • Isothipendyl • Meclizine • Mepyramine • Mequitazine • Methafurylene • Methapyrilene • Methdilazine • Moxastine • Niaprazine • Orphenadrine • Oxatomide • Oxomemazine • p-Methyldiphenhydramine • Pheniramine • Phenyltoloxamine • Promethazine • Pyrilamine • Pyrrobutamine • Setastine • Talastine • Thenalidine • Thenyldiamine • Thiazinamium • Thonzylamine • Tolpropamine • Tripelennamine • Triprolidine; 2nd Generation: Acrivastine • Antazoline • Astemizole • Azatadine • Azelastine • Bamipine • Cetirizine • Clemizole • Clobenztropine • Deptropine • Dimebon • Ebastine • Emedastine • Epinastine • Ketotifen • Levocabastine • Loratadine • Mebhydrolin • Mizolastine • Olopatadine • Phenindamine • Pimethixene • Pyrrobutamine • Rupatadine • Terfenadine • Thenalidine • Tritoqualine; 3rd Generation: Desloratadine • Fexofenadine • Levocetirizine; Miscellaneous: Tricyclic Antidepressants (Amitriptyline, Doxepin, Trimipramine, etc) • Tetracyclic Antidepressants (Mianserin, Mirtazapine, etc) • Serotonin Antagonists and Reuptake Inhibitors (Trazodone, Nefazodone) • Typical Antipsychotics (Chlorpromazine, Thioridazine, etc) • Atypical Antipsychotics (Clozapine, Olanzapine, Quetiapine, etc) H2 Agonists: Amthamine • Betazole • Dimaprit • Histamine • HTMT • Impromidine • UR-AK49 Antagonists: Cimetidine • Famotidine • Lafutidine • Metiamide • Niperotidine • Nizatidine • Ranitidine • Roxatidine H3 Agonists: α-Methylhistamine • Cipralisant • Histamine • Imetit • Immepip • Immethridine • Methimepip • Proxyfan Antagonists: A-349,821 • A-423,579 • ABT-239 • Betahistine • Burimamide • Ciproxifan • Clobenpropit • Conessine • GSK-189,254 • Impentamine • Iodophenpropit • JNJ-5,207,852 • MK-0249 • NNC-38-1,049 • SCH-79,687 • Thioperamide • Tiprolisant • VUF-5,681 H4 Agonists: 4-Methylhistamine • Histamine • VUF-8,430 Antagonists: JNJ-7,777,120 • Thioperamide • VUF-6,002 Reuptake Inhibitors Plasmalemmal ..... Vesicular VMAT Inhibitors Ibogaine • Reserpine • Tetrabenazine Enzyme Inhibitors Anabolism HDC Inhibitors α-FMH • Brocresine • Catechin • Cyanidanol-3 • McN-A-1293 • ME • Meciadanol • Naringenin • Thiazol-4-yimethoxyamine • Tritoqualine • Zy-15,029 Catabolism HNMT Inhibitors Amodiaquine • BW-301U • Diphenhydramine • Harmaline • Metoprine • Quinacrine • SKF-91,488 • Tacrine DAO Inhibitors 1,4-Diamino-2-butyne • Aminoguanidine Others Precursors L-Histidine Cofactors Vitamin B6 (Pyridoxine, Pyridoxamine, Pyridoxal → Pyridoxal Phosphate)

v • d • e Serotonergics Receptor ligands 5-HT1 5-HT1A Agonists: Azapirones: Alnespirone • Binospirone • Buspirone • Eptapirone • Gepirone • Ipsapirone • Perospirone • Tandospirone • Tiospirone • Zalospirone; Lysergamides: Dihydroergotamine • Ergotamine • Methysergide • LSD; Phenethylamines: MDA • MDMA; Piperazines: Eltoprazine • Flesinoxan • Flibanserin; Tryptamines: 5-CT • 5-MeO-DMT • 5-MT • DMT • Psilocin • Psilocybin • Rauwolscine • Yohimbine; Atypical Antipsychotics: Aripiprazole • Asenapine • Clozapine • Quetiapine • Ziprasidone; Others: 8-OH-DPAT • Befiradol • F-11440 • Lesopitron • Lu AA21004 • LY-293,284 • LY-301,317 • MKC-242 • Osemozotan • Piclozotan • PRX-00023 • Repinotan • RU-24969 • S-15535 • Sarizotan • SSR-181,507 • Sunepitron • U-92016A • Urapidil • Vilazodone • Xaliproden Antagonists: Beta Blockers: Alprenolol • Cyanopindolol • Iodocyanopindolol • Oxprenolol • Pindobind • Pindolol • Propranolol; Piperazines: Nefazodone • Trazodone • WAY-100,135 • WAY-100,635; Others: AV965 • BMY-7378 • Dotarizine • GR-46611 • Isamoltane • Lecozotan • Methiothepin • MPPF • NAN-190 • Robalzotan • S-15535 • SB-649915 • SDZ 216-525 • Spiperone • Spiramide • Spiroxatrine • UH-301 • WAY-100,135 • WAY-100,635 • Xylamidine 5-HT1B Agonists: Lysergamides: Dihydroergotamine • Ergotamine • Methysergide; Piperazines: Eltoprazine • TFMPP; Triptans: Eletriptan • Sumatriptan • Zolmitriptan; Tryptamines: 5-CT • 5-MT; Others: CP-93,129 • CP-94,253 • CP-135,807 • RU-24969 Antagonists: Lysergamides: Metergoline • Methiothepin; Tryptamines: Yohimbine; Others: AR-A000002 • GR-127,935 • Isamoltane • SB-216,641 • SB-224,289 • SB-236,057 5-HT1D Agonists: Lysergamides: Dihydroergotamine • Methysergide; Triptans: Almotriptan • Eletriptan • Frovatriptan • Naratriptan • Rizatriptan • Sumatriptan • Zolmitriptan; Tryptamines: 5-CT • 5-MT; Others: CP-135,807 • CP-286,601 • GR-46611 • L-694,247 • L-772,405 • PNU-109,291 • PNU-142,633 Antagonists: Lysergamides: Metergoline • Methiothepin; Tryptamines: Rauwolscine • Yohimbine; Others: Alniditan BRL-15572 • GR-127,935 • Ketanserin • LY-310,762 • LY-367,642 • LY-456,219 • LY-456,220 • Ritanserin • Ziprasidone 5-HT1E Agonists: Lysergamides: Methysergide; Triptans: Eletriptan; Tryptamines: Tryptamine Antagonists: Methiothepin 5-HT1F Agonists: Triptans: Eletriptan • Naratriptan • Sumatriptan; Tryptamines: 5-MT; Others: LY-334,370 Antagonists: Methiothepin 5-HT2 5-HT2A Agonists: Lysergamides: ALD-52 • Ergonovine • Lisuride • LA-SS-Az • LSD • Lysergic acid 2-butyl amide • Methysergide; Phenethylamines: 25I-NBMD • 25I-NBOH • 25I-NBOMe • 2C-B • 2C-B-FLY • 2C-E • 2C-I • 2C-T-2 • 2C-T-7 • 2C-T-21 • 2CBCB-NBOMe • 2CBFly-NBOMe • Bromo-DragonFLY • DOB • DOC • DOI • DOM • MDA • MDMA • Mescaline • Myristicin • TCB-2 • TFMFly; Piperazines: BZP • Quipazine • TFMPP; Tryptamines: 5-CT • 5-MeO-α-ET • 5-MeO-α-MT • 5-MeO-DET • 5-MeO-DiPT • 5-MeO-DMT • 5-MeO-DPT • 5-MT • α-ET • α-Methyl-5-HT • α-MT • Bufotenin • DET • DiPT • DMT • DPT • Psilocin • Psilocybin; Others: AL-34662 • AL-37350A • PNU-22394 Antagonists: Atypical Antipsychotics: Amperozide • Aripiprazole • Clozapine • Iloperidone • Melperone • Olanzapine • Paliperidone • Pimozide • Quetiapine • Risperidone • Sertindole • Ziprasidone • Zotepine; Typical Antipsychotics: Loxapine • Pipamperone; Antidepressants: Amitriptyline • Amoxapine • Etoperidone • Mianserin • Mirtazapine • Nefazodone • Trazodone; Others: 5-I-R91150 • AC-90179 • Altanserin • AMDA • APD-215 • Blonanserin • Cinanserin • Cyproheptadine • Deramciclane • Dotarizine • Eplivanserin • Fananserin • Flibanserin • Ketanserin • KML-010 • Lubazodone • Methiothepin • Nantenine • Pimavanserin • Pizotifen • Ritanserin • Sarpogrelate • Setoperone • Spiperone • Spiramide • SR-46349B • Volinanserin • Xylamidine • Yohimbine 5-HT2B Agonists: Oxazolines: 4-Methylaminorex • Aminorex; Phenethylamines: Chlorphentermine • DOB • DOC • DOI • DOM • Fenfluramine • MDA • MDMA • Norfenfluramine; Tryptamines: 5-CT • 5-MT • α-Methyl-5-HT; Others: BW-723C86 • Cabergoline • mCPP • Pergolide • PNU-22394 • Ro60-0175 Antagonists: Agomelatine • Asenapine • EGIS-7625 • Ketanserin • Lisuride • LY-272,015 • Rauwolscine • Ritanserin • RS-127,445 • Sarpogrelate • SB-200,646 • SB-204,741 • SB-206,553 • SB-215,505 • SB-221,284 • SB-228,357 • SDZ SER-082 • Tegaserod • Yohimbine 5-HT2C Agonists: Phenethylamines: 2C-B • 2C-E • 2C-I • 2C-T-2 • 2C-T-7 • 2C-T-21 • DOB • DOC • DOI • DOM • MDA • MDMA • Mescaline • Myristicin; Piperazines: Aripiprazole • mCPP • TFMPP; Tryptamines: 5-CT • 5-MeO-α-ET • 5-MeO-α-MT • 5-MeO-DET • 5-MeO-DiPT • 5-MeO-DMT • 5-MeO-DPT • 5-MT • α-ET • α-Methyl-5-HT • α-MT • Bufotenin • DET • DiPT • DMT • DPT • Psilocin • Psilocybin; Others: A-372,159 • AL-38022A • CP-809,101 • Lorcaserin • MK-212 • PNU-22394 • Ro60-0175 • Vabicaserin • WAY-629 • WAY-161,503 • YM-348 Antagonists: Atypical Antipsychotics: Clozapine • Iloperidone • Melperone • Olanzapine • Paliperidone • Pimozide • Quetiapine • Risperidone • Sertindole • Ziprasidone • Zotepine; Typical Antipsychotics: Chlorpromazine • Loxapine • Pipamperone; Antidepressants: Agomelatine • Amitriptyline • Amoxapine • Etoperidone • Fluoxetine • Mianserin • Mirtazapine • Nefazodone • Nortriptyline • Trazodone; Others: Cinanserin • Cyproheptadine • Deramciclane • Dimebolin • Dotarizine • Eltoprazine • FR-260,010 • Ketanserin • Ketotifen • Methysergide • Pizotifen • Ritanserin • RS-102,221 • SB-200,646 • SB-206,553 • SB-221,284 • SB-228,357 • SB-242,084 • SB-243,213 • SDZ SER-082 • Xylamidine 5-HT3 Agonists: Piperazines: BZP • Quipazine; Tryptamines: 2-Methyl-5-HT • 5-CT; Others: Chlorophenylbiguanide • RS-56812 • SR-57,227 • SR-57,227-A • YM-31636 Antagonists: Antiemetics: AS-8112 • Alosetron • Azasetron • Batanopride • Bemesetron • Cilansetron • Dolasetron • Granisetron • Lerisetron • Ondansetron • Palonosetron • Ramosetron • Renzapride • Tropisetron • Zacopride • Zatosetron; Atypical Antipsychotics: Clozapine • Olanzapine • Quetiapine; Tetracyclic Antidepressants: Amoxapine • Mianserin • Mirtazapine; Others: ICS-205,930 • Lu AA21004 • MDL-72,222 • Memantine • Ricasetron 5-HT4 Agonists: Gastroprokinetic Agents: Cisapride • Metoclopramide • Mosapride • Prucalopride • Renzapride • Tegaserod • Zacopride; Others: 5-MT • BIMU-8 • CJ-033,466 • PRX-03140 • RS-67333 • RS-67506 • TD-5108 Antagonists: GR-113,808 • GR-125,487 • L-Lysine • Piboserod • RS-39604 • RS-67532 • SB-203,186 5-HT5 5-HT5A Agonists: Lysergamides: Ergotamine • LSD; Tryptamines: 5-CT; Others: Valerenic Acid Antagonists: Asenapine • Dimebolin • Methiothepin • Ritanserin • SB-699,551 5-HT5B* Agonists: Lysergamides: Ergotamine • LSD Antagonists: Methiothepin * Note that the 5-HT5B receptor is not functional in humans. 5-HT6 Agonists: Lysergamides: Lisuride • LSD • Metergoline; Tryptamines: 5-CT • 5-MT • E-6801 • E-6837 • EMD-386,088 • EMDT • LY-586,713 • WAY-181,187 • WAY-208,466 Antagonists: Antidepressants: Amitriptyline • Amoxapine • Clomipramine • Doxepin • Mianserin • Nortriptyline; Atypical Antipsychotics: Aripiprazole • Asenapine • Clozapine • Fluperlapine • Iloperidone • Olanzapine • Tiospirone; Typical Antipsychotics: Chlorpromazine • Loxapine; Others: BGC20-760 • BVT-5182 • BVT-74316 • Dimebolin • EGIS-12233 • GW-742,457 • Ketanserin • Methiothepin • MS-245 • PRX-07034 • Ritanserin • Ro 04-6790 • Ro 63-0563 • SB-258,585 • SB-271,046 • SB-357,134 • SB-399,885 5-HT7 Agonists: Lysergamides: LSD; Tryptamines: 5-CT • 5-MT; Others: 8-OH-DPAT • AS-19 • Bifeprunox • LP-12 • LP-44 • Sarizotan Antagonists: Antidepressants: Amitriptyline • Amoxapine • Clomipramine • Imipramine • Maprotiline • Mianserin; Atypical Antipsychotics: Amisulpride • Aripiprazole • Clozapine • Olanzapine • Risperidone • Sertindole • Tiospirone • Ziprasidone • Zotepine; Typical Antipsychotics: Chlorpromazine • Loxapine; Others: EGIS-12233 • LY-215,840 • Mesulergine • Metergoline • Methiothepin • Pimozide • Ritanserin • SB-258,719 • SB-258,741 • SB-269,970 • SB-656,104 • SB-656,104-A • SB-691,673 • SLV-313 • SLV-314 • Spiperone • SSR-181,507 Reuptake inhibitors Plasmalemmal SERT inhibitors Selective Serotonin Reuptake Inhibitors (SSRIs): Alaproclate • Citalopram • Dapoxetine • Desmethylcitalopram • Desmethylsertraline • Elzasonan • Escitalopram • Femoxetine • Fluoxetine • Fluvoxamine • Indalpine • Litoxetine • Lubazodone • Norfluoxetine • Paroxetine • RTI-353 • Sertraline • Vilazodone • Zimelidine; Serotonin-Norepinephrine Reuptake Inhibitors (SNRIs): Bicifadine • Desvenlafaxine • Duloxetine • Milnacipran • Venlafaxine; Serotonin-Norepinephrine-Dopamine Reuptake Inhibitors (SNDRIs): Brasofensine • Diclofensine • DOV-102,677 • DOV-21,947 • DOV-216,303 • NS-2359 • SEP-225,289 • SEP-227,162 • Tesofensine; Tricyclic Antidepressants (TCAs): Amitriptyline • Butriptyline • Cianopramine • Clomipramine • Desipramine • Dosulepin • Doxepin • Imipramine • Lofepramine • Nortriptyline • Protriptyline • Trimipramine; Tetracyclic Antidepressants (TeCAs): Amoxapine; Piperazines: Nefazodone • Trazodone; Antihistamines: Brompheniramine • Chlorpheniramine • Diphenhydramine • Mepyramine (Pyrilamine) • Pheniramine • Tripelennamine; Opioids: Meperidine (Pethidine) • Methadone • Propoxyphene • Tramadol; Others: Cocaine • Cyclobenzaprine (CBZ) • Dextromethorphan (DXM) • Mesembrine • Nefopam • SB-649,915 • Sibutramine • Ziprasidone TRPC6 activators Adhyperforin • Hyperforin Vesicular VMAT Inhibitors Ibogaine • Reserpine • Tetrabenazine Releasing agents Aminoindanes: Ethyltrifluoromethylaminoindane (ETAI) • Methylenedioxyaminoindane (MDAI) • Methylenedioxymethylaminoindane (MDMAI) • Methoxymethylaminoindane (MMAI) • Trifluoromethylaminoindane (TAI); Aminotetralins: 8-Hydroxydipropylaminotetralin (8-OH-DPAT); Oxazolines: 4-Methylaminorex (4-MAR, 4-MAX) • Aminorex • Clominorex • Fluminorex; Phenethylamines (also Amphetamines, Cathinones, Phentermines, etc): 4-Methylthioamphetamine (4-MTA) • 5-Aminopropyldihydrobenzofuran (5-APDB; 5-Desoxy-MDA) • Benzodioxolylbutanamine (BDB) • Benzodioxolylhydroxybutanamine (BOH) • Brephedrone • Butylone • Chlorphentermine • Diethylcathinone (Diethylpropion, Amfepramone) • Dimethoxyamphetamine (DMA) • Dimethoxymethamphetamine (DMMA) • Dimethylcathinone (Dimethylpropion, Metamfepramone) • Ethylbenzodioxolylbutanamine (EBDB) • Ethylone • Fenfluramine (Dexfenfluramine) • Flephedrone • Indanylamphetamine (IAP) • Lophophine (Homomyristicylamine) • Mephedrone • Methedrone • Methoxymethylamphetamine (MMA) • Methoxymethylenedioxyamphetamine (MMDA) • Methoxymethylenedioxymethamphetamine (MMDMA) • Methylbenzodioxolylbutanamine (MBDB) • Methylenedioxyamphetamine (MDA; Tenamfetamine) • Methylenedioxyethylamphetamine (MDEA) • Methylenedioxyhydroxyamphetamine (MDOH) • Methylenedioxymethamphetamine (MDMA) • Methylenedioxymethylphenethylamine (MDMPEA; Homarylamine) • Methylenedioxyphenethylamine (MDPEA; Homopiperonylamine) • Methylone • Naphthylamphetamine (NAP) • Norfenfluramine • Parabromoamphetamine (PBA) • Parachloroamphetamine (PCA) • Parafluoroamphetamine (PFA) • Parafluoromethamphetamine (PFMA) • Parahydroxyamphetamine (PHA) • Paraiodoamphetamine (PIA) • Paramethoxyamphetamine (PMA) • Paramethoxyethylamphetamine (PMEA) • Paramethoxymethamphetamine (PMMA); Piperazines: 2,5-Dimethoxy-4-bromobenzylpiperazine (2C-B-BZP) • Benzylpiperazine (BZP) • Metachlorophenylpiperazine (mCPP) • Methoxyphenylpiperazine (MeOPP; Paraperazine) • Methylbenzylpiperazine (MBZP) • Methylenedioxybenzylpiperazine (MDBZP; Piperonylpiperazine) • Parafluorophenylpiperazine (pFPP; Fluoperazine) • Trifluoromethylphenylpiperazine (TFMPP); Quinolines: PK-7059 • Viqualine; Tryptamines: Alphaethyltryptamine (AET; Etryptamine) • Alphamethyltryptamine (AMT; Metryptamine) Enzyme inhibitors Anabolism TPH inhibitors AGN-2979 • Fenclonine AAAD inhibitors Benserazide • Carbidopa Catabolism MAO Inhibitors Nonselective: Etryptamine • Furazolidone • Hydralazine • Iproclozide • Iproniazid • Isocarboxazid • Isoniazid • Linezolid • Mebanazine • Metryptamine • Nialamide • Phenelzine • Pheniprazine • Phenoxypropazine • Pivalylbenzhydrazine • Procarbazine • Safrazine • Tranylcypromine; MAO-A Selective: Befloxatone • Brofaromine • Cimoxatone • Clorgiline • Harmala alkaloids (Harmine, Harmaline, Tetrahydroharmine, etc) • Minaprine • Moclobemide • Pirlindole • Toloxatone • Tyrima Others Precursors L-Tryptophan → 5-HTP Cofactors Ferrous iron (Fe2+) • Magnesium (Mg2+) • Tetrahydrobiopterin • Vitamin B3 (Niacin, Nicotinamide → NADPH) • Vitamin B6 (Pyridoxine, Pyridoxamine, Pyridoxal → Pyridoxal phosphate) • Vitamin B9 (Folic Acid → Tetrahydrofolic acid) • Vitamin C (Ascorbic acid) • Zinc (Zn2+) Others Activity enhancers: Benzofuranylpropylaminopentane (BPAP) • Phenylpropylaminopentane (PPAP); Reuptake enhancers: Tianeptine

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