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Promethazine 25mg

Medically Reviewed by – Millie Chapman, NP

Last Updated on 8 July 2026

Promethazine 25mg

$0.41 – $0.50

Promethazine is an antihistamine used to treat allergy symptoms such as hay fever, rash, itching, sneezing, runny nose, watery eyes, and hives. It is also prescribed to treat nausea, vomiting, motion sickness, and pain after surgery. This medicine, also used as a sedative, works by blocking a certain natural substance (histamine) in your body. This medicine may also be used to treat other conditions as determined by your doctor.

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25mg

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Price: $50
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Promethazine 25mg Coupon	Coupon Description	Coupon Expiry Date
SUNNY28	Summer Spectacular Sale	2026-07-31

Categories: AllergiesTag: Pills

What is Promethazine 25mg used for?

Promethazine 25mg is an antihistamine used to treat allergy symptoms such as hay fever, rash, itching, sneezing, runny nose, watery eyes, and hives. It is also prescribed to treat nausea, vomiting, motion sickness, and pain after surgery. This medicine, also used as a sedative, works by blocking a certain natural substance (histamine) in your body. This medicine may also be used to treat other conditions as determined by your doctor.

What are the side effects of Promethazine 25mg?

Like other medicines, Promethazine 25mg can cause some side effects. If they do occur, the side effects of Promethazine are most likely to be minor and temporary. However, some may be serious and may require the individual to inform the doctor or visit the nearest hospital immediately. It is pertinent to note that side effects of Promethazine cannot be anticipated. If any side effects of Promethazine develop or change in intensity, the doctor should be informed as soon as possible. Promethazine can cause side effects such as constipation, dizziness, anxiety, blurred vision, dry mouth, weight gain, and impotence. This is not a complete list of all side effects. Do concur with your doctor and follow his directions completely when you are taking Promethazine.

What is the recommended dosage of Promethazine?

The dosage of Promethazine prescribed to each patient will vary. Always follow your physician’s instructions and/or the directions on the prescription drug label. Promethazine can be taken with or without food.

What if you miss a dose of Promethazine?

If your physician has instructed or directed you to take Promethazine medication in a regular schedule and you have missed a dose of this medicine, take it as soon as you remember. However, if it is almost time for your next dose, then skip the missed dose and go back to your regular dosing schedule. Do not double the doses unless otherwise directed.

What if you overdose on Promethazine?

Any medication taken in excess can have serious consequences. If you suspect an overdose of Promethazine, seek medical attention immediately.

What other drugs could interact with Promethazine 25mg?

Atropine
Dimenhydrinate
Guanadrel
Ipratropium
Isocarboxazid
Lithium
Warfarin

It may be noted that drugs other than those listed above may also interact with Promethazine. Usually drug interactions occur when it is taken with another drug or with food. Before you take a medication for a particular ailment, you should inform the health expert about intake of any other medications including non-prescription medications, over-the-counter medicines that may increase the effect of Promethazine, and dietary supplements like vitamins, minerals and herbal, so that the doctor can warn you of any possible drug interactions. Promethazine can interact with blood thinners, blood pressure medications, and stomach ulcer medicines. Do let your doctor know if you smoke, consume alcohol or caffeinated drinks, or use illegal drugs as these may interfere with the action of your medication. Make sure to inform your doctor of any medical conditions you may have, or any family history of medical problems. Do not start or stop using any medicine without consulting your doctor.

Where can I buy Promethazine 25mg over the counter?

Promethazine 25mg over the counter medicine is an antihistamine which is sometimes used as a sleeping pill. This medication is also known by the trade names as Promethazine alternatives. This medicine is available to buy without a prescription from a doctor. It is an ingredient in some Promethazine over the counter cold and flu medicines.

Can I buy Promethazine 25mg without a prescription?

Promethazine 25mg over the counter medication is available only on prescription. Promethazine without prescription is not available.

What are the questions to ask your doctor before taking Promethazine 25mg tablet?

Is it possible for me to take Promethazine with other drugs? Should certain beverages, foods and other products be avoided when I take Promethazine? What are the possible drug interactions of Promethazine? How will Promethazine work in my body? How should Promethazine be taken? How to reduce the risk of Promethazine drug interactions and side effects?

Note

The health and medical information provided here is intended to supplement and not substitute for the expertise and judgment of your physician, pharmacists or other health care professional. It should not be understood to indicate that the use of Promethazine is safe, appropriate or effective for you. Always consult your health care professional before using this, or any other, drug.

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