Promethazine VC Side Effects
What should I watch for?
Tell your doctor if your symptoms do not improve or if they get worse.
You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this medicine. Avoid alcoholic drinks.
This medicine may cause dry eyes and blurred vision. If you wear contact lenses you may feel some discomfort. Lubricating drops may help. See your eye doctor if the problem does not go away or is severe.
Your mouth may get dry. Chewing sugarless gum or sucking hard candy, and drinking plenty of water may help. Contact your doctor if the problem does not go away or is severe.
Side Effects to watch for
Side effects that you should report to your doctor or health care professional as soon as possible:
- blurred vision
- breathing trouble
- fast, irregular heartbeat
- fever, sweating
- high or low blood pressure
- muscle stiffness
- sensitive to sunlight
- tremor, twitches
- trouble passing urine
- unusually weak
- yellowing of the eyes or skin
Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
What may interact with this drug?
Do not take this medicine with any of the following medications:
- ergotamine, dihydroergotamine
- MAOIs like Carbex, Eldepryl, Marplan, Nardil, and Parnate
- stimulant drugs
This medicine may also interact with the following medications:
- barbiturate medicines like phenobarbital
- diet aids
- heart medicines
- medicines for asthma
- medicines for cold or allergies
- medicines for depression, anxiety or psychotic disturbances
- medicines for Parkinson's disease
- medicines for sleep
- medicines for the stomach like metoclopramide, dicyclomine, glycopyrrolate
- pain medicines
- radio contrast dyes
- St. John's wort