You are here: Home > Pharmacy > C > Clemastine
Buy more than a month's supply and save more!
Drug Information
Share drug information with your friendsClick here to print this information

What is Clemastine used for?

Clemastine is an antihistamine used to relieve allergy symptoms such as rash, hives, watery eyes, itchy eyes, runny nose, and sneezing. It is also used to treat hay fever and common cold. This medicine 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 is the recommended dosage of Clemastine?

The dosage of Clemastine prescribed to each patient will vary. Always follow your physician’s instructions and/or the directions on the prescription drug label.

Clemastine can be taken with or without food. Take each dose with a full glass of water.

What if you miss a dose of Clemastine?

If your physician has instructed or directed you to take Clemastine 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 Clemastine?

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

What other drugs could interact with Clemastine?

It may be noted that drugs other than those listed above may also interact with Clemastine.

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 Clemastine, and dietary supplements like vitamins, minerals and herbal, so that the doctor can warn you of any possible drug interactions.

Clemastine can interact with depression medicines and anxiety 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.

What are the side effects of Clemastine?

Like other medicines, Clemastine can cause some side effects. If they do occur, the side effects of Clemastine 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 Clemastine cannot be anticipated. If any side effects of Clemastine develop or change in intensity, the doctor should be informed as soon as possible.

Clemastine can cause stomach upset, dry mouth, dizziness, drowsiness, headache, constipation, blurred vision, and loss of appetite. This is not a complete list of all side effects. Do concur with your doctor and follow his directions completely when you are taking Clemastine.

What are the questions to ask your doctor before taking Clemastine?

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


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 Clemastine is safe, appropriate or effective for you. Always consult your health care professional before using this, or any other, drug.


Share this Article!

Back to top^