The chlorpheniramine or chlorpheniramine (chlorpheniramine maleate) is an antihistamine drug, ie, the properties of this chemical block histamine, being used mainly in the treatment of any type of allergy or flu.

It is used in combination with other drugs and is sold most of the time without the need for a prescription, either alone or in combination, it is a widely used drug to combat various ailments among which rhinitis, allergic reactions, hives, sneezing attacks stand out. , among other.

What does chlorpheniramine do and what are its benefits?

It has an incredible relieving effect on allergy symptoms such as watery eyes and other secretions resulting from this reaction. Although it is worth noting that there are many ailments for which this drug is prescribed.

What does chlorphenamine cure?

  • In the case of all types of allergies, it has proven to be very effective in those cases in which the allergy is caused by an insect, animal hair, or pollen from various flowers, especially during spring.
  • To combat the symptoms of the flu, throat irritation and discomfort, nasal congestion and also in cases of conjunctivitis.

How does chlorphenamine work?

The action of the antimuscarinics present in clofenamine dries the mucous membranes and thus prevents the response of acetylcholine and its effect can last up to 25 hours.

Presentations of clofenamine

It generally comes in pills to be taken orally or also to be administered subcutaneously or intravenously. Its most common and used presentation is in pills since it is very well absorbed in this way by the body.

You can also find this medicine in syrup and the doses may vary depending on the patient, that is, if it is an adult or if it is a child. Certainly the most popular way to get it is in capsules.

Questions regarding this product

If you have any doubts or questions about what chlorphenamine is for, we will answer some of the most frequent ones so that you better understand how to dispose of this medicine correctly, how to store it, what to do in case of overdose, among other things.

What is the correct way to store chlorphenamine?

Keep it in the original container, only change it to another container if you are going to take it during the day. Remember in the same way that it is better to take this medicine in the morning. Keep it in a place where it can be at room temperature, away from the bathroom and out of the reach of children.

To dispose of the medicine, you could ask the pharmacist directly who will tell you the best way to dispose of this or any expired medicine that you have at home. You don’t put it in the trash can, especially if you have children or pets at home.

What to do if a chlorphenamine overdose occurs?

It is necessary that you take all the precautions so that this does not happen, but in case the worst happens it is necessary that you call the poison control center immediately or at least contact a doctor immediately.

The most dangerous thing is if the person has lost consciousness, cannot breathe or begins to have seizures, in which case it is vital to contact the emergency number.

Do I have to follow some kind of special diet when taking chlorphenamine?

It is not necessary that you have any type of particular diet while taking this drug, however, if there is any doubt about it, it is best to ask your doctor at the time he prescribes it.

What to do if you forget to take your dose of chlorphenamine?

In general, this medication is prescribed as needed and in case you miss a dose, it is best not to take the account or take it twice the next time, but simply take it the next time normally.

Does chlorphenamine have other uses?

Certainly this drug could be prescribed for other ailments and other uses, but it is important that before taking it without having the necessary knowledge you first ask a trusted doctor about it.

Does chlorphenamine cure rhinitis?

It is a drug prescribed for this, although as such it does not cure it, it simply relieves some derived symptoms, in the same way that it helps in cold symptoms such as excessive mucus.

There are many treatments related to allergies and flu that this drug could treat, it is important that at no time you self-medicate. This drug in most forms and combinations does not need a prescription, however, you should not take it lightly.

In its majority of uses it is completely safe and its side effects can be easily treated, this makes it a very safe drug and recommended by most of the medical community.

Chlorphenamine Side Effects

By crossing the blood-brain barrier it produces a sedative effect, which is why some caution must be exercised when taking it. It is important that, if you present any adverse symptoms, you go immediately to the doctor, these symptoms may be:

  1. An allergic reaction to the medicine could show up as redness on the skin, difficulty breathing, swelling of various parts of the body such as the eyes, mouths and face.
  2. Difficulty seeing, confusion or lightheadedness, trouble breathing, or fainting
  3. Excessive sweating, feeling of losing consciousness or fainting, tiredness, increased volume, and difficulty urinating.

Precautions and contraindications

It is important that you do not exceed the doses that the doctor has indicated and that you do not self-medicate. To control the dose correctly it is necessary that you implement the use of a measuring spoon.

  • When giving this medicine to children, you should first consult with the pediatrician, especially considering that its use is not recommended in children under 2 years of age.
  • You should also be especially careful with people over 65 years of age, as their reaction to this drug may be stronger and a lower dose may be necessary than in younger adults.
  • In case of pregnancy or during lactation, you should consult your doctor before consuming it, so if you are during any of these processes it is important that you take this precaution into account.

The contraindications that you must have before consuming this medication are the following:

  • In case of glaucoma or suffering from a disease related to the heart and blood pressure.
  • If you suffer from asthma, this medicine could be against indicated in the same way any type of disease that has to do with the lungs.
  • Make sure you are not allergic to the medication, but it is also against indicated if you are allergic to artificial colors or preservatives.

Do not drive while taking chlorphenamine

This drug can cause drowsiness, and its treatment is not recommended for sleeping, but it could cause some drowsiness as a side effect so on the one hand it can relieve you while you feel bad but it is also dangerous to operate any type of machinery or drive.

How to solve the most common problems when taking chlorphenamine?

Many of the side effects that this drug could cause can be treated by yourself and you do not need to go to a specialist, these are some things you could do if you have any adverse or secondary symptoms.


This side effect of taking this medicine can be a bit annoying especially in young children and a simple trick is to chew gum or some type of candy, this will alleviate this symptom, also drinking enough liquid will make you feel better.

Dry eyes

A real nuisance if you wear contact lenses can be dry eyes as a side effect of taking chlorphenamine and if this is the case you probably already have lubricating eye drops or drops, so you will only have to apply them to relieve this slight, but sometimes annoying side effect.

Dizziness and sleep

This symptom or side effect can be the most dangerous and with which you should be more careful and as we mentioned avoid driving, operating heavy machinery or doing any activity of this type as much as possible, the best thing you can do in this case is lie down and rest.


By way of conclusion, we can say that chlorphenamine is a very effective drug in the treatment of allergies, nasal congestion, flu, among other similar conditions. Its sale is made without the need for a medical prescription, but you should avoid taking it without first going to a doctor, to avoid its side effects.

However, you can make use of the tips that we mentioned above to reduce these annoying symptoms. We say goodbye for this occasion, and I invite you to meet in a new edition!

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Dr. Samantha Robson ( CRN: 0510146-5) is a nutritionist and website content reviewer related to her area of ​​expertise. With a postgraduate degree in Nutrition from The University of Arizona, she is a specialist in Sports Nutrition from Oxford University and is also a member of the International Society of Sports Nutrition.

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