To return to the main entry click here.
What is phenylephrine injection?
PHENYLEPHRINE (Neo-Synephrine®) can treat a variety of conditions. It is often used during surgery. Phenylephrine treats very low blood pressure, or serious heart problems such as irregular heartbeat (arrhythmias). Generic phenylephrine injections are available.
What should I tell my health care provider before I take this medicine?
They need to know if you have any of the following conditions:
• head injury or disease
• heart disease
• glaucoma
• high blood pressure
• over active thyroid
• an unusual or allergic reaction to phenylephrine, sulfites, other medicines, foods, dyes, or preservatives
• pregnant or trying to get pregnant
• breast-feeding
How should I use this medicine?
Phenylephrine is for injection or infusion into a vein, or injection into a muscle or under the skin. It is given by a health-care professional in a hospital or clinic setting.
What if I miss a dose?
This does not apply.What drug(s) may interact with phenylephrine?
• atropine
• bromocriptine
• linezolid
• maprotiline
• medicines for mental depression
• medicines for migraine
• medicines for high blood pressure
• oxytocin
• vasopressin
• water pills
Tell your prescriber or health care professional about all other medicines you are taking, including non-prescription medicines, nutritional supplements, or herbal products. 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 before starting or stopping any of your medicines.
What should I watch for while taking phenylephrine?
Your condition will be closely monitored during use of phenylephrine.
What side effects may I notice from receiving phenylephrine?
Side effects that you should report to your prescriber or health care professional as soon as possible:
• dizziness, or fainting spells
• difficulty breathing
• irregular heartbeat, palpitations, or chest pain
• increased sweating
• pain, redness, swelling or irritation at the injection site
• pale skin
• tingling, pain, or numbness in the hands or feet
Side effects that usually do not require medical attention (report to your prescriber or health care professional if they continue or are bothersome):
• confusion, nervousness
• headache
• nausea, vomiting
Where can I keep my medicine?
Keep out of the reach of children.
Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F); do not freeze. Protect from light. Do not use if solution is brown or contains a precipitate. Throw away any unused medicine after the expiration date.
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.
