Home / Allergy / Cyproheptadine
Home / Allergy / Cyproheptadine


Cyproheptadine is used in the treatment of allergic reactions including hay fever

Cyproheptadine 4mg

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Cyproheptadine uses 

This medicine is an antihistamine which helps in reducing the effects of the natural chemical histamine in your body. Histamine can give rise to symptoms of sneezing, watery eyes, runny nose as well as itching. Cyproheptadine tablets are mainly used to treat sneezing, itching, runny nose, watery eyes, as well as other symptoms of seasonal allergies like hay fever. This medicine is also effective in treating other conditions like eczema and skin reactions to insect bites.    

Therefore, Cyproheptadine medicine is also sometimes used for treating certain types of headaches including the pain of migraines. This medicine should not be given to newborn or premature infants. The brand name of this medicine is Periactin.  

Cyproheptadine dosage 

First of all, you need to follow all the directions that are written on your prescription label. To ensure the best results, your doctor may occasionally change the dosage of your medicine. Avoid using this medicine in larger or smaller amounts as well as a long time than recommended.  

It is usually given two to three times a day by mouth with or without the food as prescribed by the doctor. When you intake the liquid form of this medication make sure that you measure the dose with the help of a special measuring spoon or device. You might not get the correct dose if you measure the medicine with a household spoon.  

The dose of this medicine is based on weight especially in children and teenagers so inform your doctor if there are any changes in your weight because it can change the dose.  

It is possible that this medicine can lead to having a false positive drug screening test, so if you provide the urine sample for drug screening then make sure that you tell the laboratory staff about the intake of this medicine.  

Store the medicine in a tightly closed container away from moisture as well as heat. 

Cyproheptadine Side Effects 

Get immediate emergency help in case you notice signs of allergic reactions such as difficulty in breathing, hives and swelling on your face, tongue, throat as well as lips. Keep one thing in your mind that your doctor has prescribed you this medicine because he has judged that the benefits of this medicine are greater as compared to the risk of side effects.  

Stop the intake of this medicine and consult your doctor, if you have:  

  • A light-headed feeling, little or no urination
  • Ringing in your ears, fever, weakness, dark colored urine and pale or yellow skin
  • Easy bruising or bleeding, fast or pounding heartbeats, tremor and confusions

Some of the common side effects of this medicine include: 

  • Dry mouth, nose or throat
  • Constipation & blurred vision
  • Drowsiness, dizziness
  • Feeling of restless especially in children

This medicine often helps in increasing the appetite as a side effect which results in gaining your weight. Therefore, this is not the complete list of side effects, if you find any other side effects apart from this call your doctor immediately.  

Cyproheptadine Precautions 

Make sure that you inform your doctor if you are allergic to this medicine or suffering from any other allergies. This medicine can sometimes also cause allergic reactions or other problems as it contains certain inactive ingredients.  

Stop this medicine if you are suffering from below stated problems: 

  • You are having narrow-angle glaucoma, or suffering from stomach ulcer or obstruction
  • Suffering from urination problems as well as enlarged prostate
  • You are breast-feeding a baby or having an asthma attack
  • If you are elderly or have a debilitating disease
  • Never try giving this medicine to a premature or newborn baby. This medicine is not approved for anyone who is younger than two years old. 

In order to ensure that this medicine is safe for you to take, tell your doctor if you have problems like: 

  • A history of asthma, glaucoma
  • Suffering from heart disease, high blood pressure
  • An overactive thyroid

Inform your doctor if you are pregnant or planning to get pregnant during the course of this medication because Cyproheptadine is expected not to harm the unborn baby.  

You should not breast-feed your baby during the intake off this medicine because it is known whether this medicine passes into breast milk or not. 

Avoid driving and using any machinery or do anything which requires clear vision or alertness after taking this medicine until and unless you can do it safely. 

Cyproheptadine Interactions 

There are total of 301 drugs that are known for interacting with this medicine 

6 major drug interactions

293 moderate drug interactions

2 minor drug interactions 

The drug interaction can help in changing how your medications work or can also increase the risk of serious side effects. Make a list of all the products you use such as prescription, non-prescription drugs as well as herbal products and take it to the doctor when you visit for medication.  

Do not start, stop or change the dosage of any medicine until your doctor tells you to do so. Since this medicine contains ingredients that cause drowsiness so check the label of your medicine and ask to use it safely. 

Cyproheptadine MOA (Mechanism of Action) 

This medicine is mainly used for relieving allergy symptoms like runny nose, sneezing, hives, itching, itching eyes/nose as well as the watery nose. This medicine works in your body by blocking certain natural substance known as histamine that your body often makes during an allergic reaction.  

This medicine also blocks another natural substance in your body like serotonin.  

Cyproheptadine Warnings 

This medicine should not be used by people who are suffering from narrow-angle glaucoma, urination problems, having an asthma attack, an enlarged prostate as well as a stomach ulcer or obstruction. 

It is strictly recommended not to use this medicine in case you have used an MAO inhibitor in the last 14 days such as methylene blue injection, tranylcypromine, phenelzine, rasagiline, linezolid as well as isocarboxazid.  

One should strictly stop the intake of alcohol with this medicine because it can cause serious side effects.  

We only ship medications which are approved by FDA, Also please consult your doctor to make a full decision on what medication to take.

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