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What is this medicine?
PROMETHAZINE (proe METH a zeen) is an antihistamine. It is used to treat allergic reactions and to treat or prevent nausea and vomiting from illness or motion sickness. It is also used to make you sleep before surgery, and to help treat pain or nausea after surgery.
How should I use this medicine?
This medicine is for rectal use only. Do not take by mouth. Wash your hands before and after use. Take off the foil wrapping. Wet the tip of the suppository with cold tap water to make it easier to use. Lie on your side with your lower leg straightened out and your upper leg bent forward toward your stomach. Lift upper buttock to expose the rectal area. Apply gentle pressure to insert the suppository completely into the rectum, pointed end first. Hold buttocks together for a few seconds. Remain lying down for about 15 minutes to avoid having the suppository come out. Do not use more often than directed.
Talk to your pediatrician regarding the use of this medicine in children. Special care may be needed. This medicine should not be given to infants and children younger than 2 years old.
What side effects may I notice from receiving this medicine?
Side effects that you should report to your doctor or health care professional as soon as possible:
allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
changes in vision
fever, chills, sore throat
pain, redness, or irritation at site where injected
signs and symptoms of high blood sugar such as being more thirsty or hungry or having to urinate more than normal. You may also feel very tired or have blurry vision.
signs and symptoms of liver injury like dark yellow or brown urine; general ill feeling or flu-like symptoms; light-colored stools; loss of appetite; nausea; right upper belly pain; unusually weak or tired; yellowing of the eyes or skin
signs and symptoms of low blood pressure like dizziness; feeling faint or lightheaded, falls; unusually weak or tired
trouble passing urine or change in the amount of urine
uncontrollable movements of the arms, face, head, mouth, neck, or upper body
unusual bruising or bleeding
unusually weak or tired
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 medicine?
antihistamines for allergy, cough, and cold
certain medicines for anxiety or sleep
certain medicines for bladder problems like oxybutynin, tolterodine
certain medicines for depression like amitriptyline, fluoxetine, sertraline
certain medicines for Parkinson's disease like benztropine, trihexyphenidyl
certain medicines for stomach problems like dicyclomine, hyoscyamine
certain medicines for travel sickness like scopolamine
general anesthetics like halothane, isoflurane, methoxyflurane, propofol
MAOIs like Marplan, Nardil, and Parnate
medicines for high blood pressure
medicines for seizures like phenobarbital, primidone, phenytoin
medicines that relax muscles for surgery
narcotic medicines for pain
What if I miss a dose?
If you miss a dose, use it as soon as you can. If it is almost time for your next dose, use only that dose. Do not use double doses.
Where should I keep my medicine?
Keep out of the reach of children.
Store in a refrigerator between 2 and 8 degrees C (36 and 46 degrees F). Throw away any unused medicine after the expiration date.
What should I tell my health care provider before I take this medicine?
They need to know if you have any of these conditions:
blockage in your bowel
have trouble controlling your muscles
low blood counts, like low white cell, platelet, or red cell counts
lung or breathing disease, like asthma
stomach or intestine problems
trouble passing urine
an unusual or allergic reaction to promethazine, sulfites, other medicines, foods, dyes, or preservatives
pregnant or trying to get pregnant
What should I watch for while using this medicine?
Visit your health care professional for regular checks on your progress. Tell your health care professional if symptoms do not start to get better 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. To reduce the risk of dizzy or fainting spells, do not stand or sit up quickly, especially if you are an older patient. Alcohol may increase dizziness and drowsiness. Avoid alcoholic drinks.
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.
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.
This medicine can make you more sensitive to the sun. Keep out of the sun. If you cannot avoid being in the sun, wear protective clothing and use sunscreen. Do not use sun lamps or tanning beds/booths.
This medicine may increase blood sugar. Ask your health care provider if changes in diet or medicines are needed if you have diabetes.
October 30, 2020