It is a dopamine receptor antagonist

The phenylbutylpiperadines are haloperidol (Haldol) and pimozide (Orap). They find primary use in control of Tourette's syndrome. Haloperidol has been extremely useful in controlling aggressive behavior.

As far as I understand, yes you can. You cannot take clotting medications or MAOI's whilst taking Zoloft.

"Do not take Zoloft together with pimozide (Orap), or a monoamine oxidase inhibitor (MAOI) such as isocarboxazid (Marplan), phenelzine (Nardil), rasagiline (Azilect), selegiline (Eldepryl, Emsam), or tranylcypromine (Parnate). You must wait at least 14 days after stopping an MAOI before you can take Zoloft. After you stop taking Zoloft, you must wait at least 14 days before you start taking an MAOI."**

**http://www.drugs.com/zoloft.html

ADDITIONAL MONITORING OF YOUR DOSE OR CONDITION may be needed if you are taking Methadone with azithromycin!

Before using:

Some medicines or medical conditions may interact with Azithromycin 500mg. INFORM YOUR DOCTOR OR PHARMACIST of all prescription and over-the-counter medicine that you are taking. DO NOT TAKE AZITHROMYCIN 500mg if you are also taking dofetilide, nilotinib, propafenone, pimozide, or tetrabenazine. ADDITIONAL MONITORING OF YOUR DOSE OR CONDITION may be needed if you are taking antiarrhythmics (eg, disopyramide), anticoagulants (eg, warfarin), arsenic, astemizole, carbamazepine, cisapride, digoxin, domperidone, maprotiline, METHADONE, nelfinavir, cyclosporine, ergot alkaloids (eg, ergotamine), paliperidone, phenytoin, quinolones (eg, levofloxacin), rifampin, terfenadine, theophylline, triazolam, tyrosine kinase inhibitors (eg, dasatinib), or medicines that may affect your heartbeat. Ask your doctor if you are unsure if any of the medicines you are taking may affect your heartbeat. Inform your doctor of any other medical conditions including irregular heartbeat, kidney problems, liver problems, myasthenia gravis, allergies, pregnancy or breastfeeding. Contact your doctor or pharmacist if you have any questions or concerns about taking Azithromycin 500mg.

Money. It makes money for the government through taxes. That is the only reason it is legal...because of the huge amounts of money it brings in. And that is exactly why marijuana is illegal...because they would have no way of controlling the producers (tax payers).

However, to be fair nicotine (consituent of tobacco) does have accepted medical potential. For example, nicotine patches are used to potentiate the effects of haloperidol and pimozide in patients suffering from tourette's syndrome. So it would be more fitting to label tobacco as schedule II (accepted medical use and highly addictive), the same class that includes methylphenidate (Ritalin), cocaine, methamphetamine (Desoxyn), morphine, etc. However, this is not the case.
It is interesting to note that most Schedule I substances do have medical uses (whether generally accepted or not) but are considered too "addictive" or "dangerous" to give to the general public. For example, heroin has ample medical uses since it is broken down into morphine (schedule II) to be used by the body, but when injected this substance can be extremely habit-forming. Other schedule I examples include LSD or psilocybin (mushrooms) which can be used to treat cluster headaches (aka suicide headaches), but are relatively non habit-forming. In summary, the scheduling of substances does not reflect so much on how addictive a substance is or what medical potential exists. Instead, substance classifications are more of a reflection of social attitudes and taboos surrounding them.