We usually hear about the uses and benefits of chlorphenamine. Here we tell you all the details.

Chlorphenamine – What is it

Chlorphenamine (also known as chlorpheniramine, CP, or CPM) is a first-generation antihistamine used in the prevention of symptoms of allergic conditions such as rhinitis and hives. Its sedative effects are relatively weak compared to other first-generation antihistamines. Chlorphenamine is one of the most widely used antihistamines in small animal veterinary practice.

Chlorphenamine – What is it for?

Chlorphenamine is an antihistamine used to relieve symptoms of allergies, hay fever, and the common cold. These symptoms include rash, watery eyes, itchy eyes / nose / throat / skin, cough, runny nose, and sneezing.

This medicine works by blocking a certain natural substance (histamine) that your body makes during an allergic reaction. By blocking another natural substance made by the body (acetylcholine), it helps to dry up some body fluids to relieve symptoms such as watery eyes and a runny nose.

Cough and cold products have not been shown to be safe or effective in children under 6 years of age. Therefore, do not use this product to treat cold symptoms in children under 6 years of age unless specifically directed by a doctor. Some products (such as long-acting pills / capsules) are not recommended for children under 12 years of age.

These products do not cure or shorten the duration of the common cold and can cause serious side effects. To decrease the risk of serious side effects, carefully follow all dosing instructions. Do not use this product to make the child sleepy. Do not give other cough and cold medications that may contain the same or similar ingredients (see also Drug Interactions section).

Chlorphenamine – Dosage and Administration

If you are taking an over-the-counter product, read all directions on the product package before taking this medicine. If you have any questions, ask your pharmacist. If your doctor has prescribed this medication, take it as directed.

Take the tablet, capsule, or liquid by mouth with or without food. Follow the directions for dosage on the label, or take as directed by your doctor. This medicine can be taken with food or milk if stomach upset occurs.

If you are taking the extended-release capsules, swallow them whole. Do not crush or chew extended-release capsules or tablets. Doing so can release all of the medicine at once, increasing the risk of side effects. Also, do not separate the extended-release tablets unless they have a score line and your doctor or pharmacist instructs you to do so. Swallow the tablet whole or divided without crushing or chewing.

If you are using the liquid form, use a medication measuring device to carefully measure the prescribed dose. Do not use a household spoon. If its liquid form is a suspension, shake the bottle well before each dose.

Your dosage is based on your age, medical condition, and response to therapy. Do not increase your dose or take this medication more often than recommended by your doctor or the instructions on the package without your doctor’s approval. Take this medicine regularly to get the most benefit from it. To help you remember, take it at the same time (s) every day.

If your condition persists or worsens, or if you think you may have a serious medical problem, seek immediate medical attention.

Chlorphenamine – Side Effects

May cause drowsiness, dizziness, headache, constipation, upset stomach, blurred vision, decreased coordination, or dry mouth / nose / throat. These effects may lessen as your body adjusts to the medicine. If any of these effects persist or worsen, contact your doctor or pharmacist immediately.

To relieve dry mouth, suck on candy (sugar-free) or ice chips, chew gum (sugar-free), drink water, or use a saliva substitute. Chlorpheniramine can dry out and thicken the mucus in your lungs, making it harder to breathe and clear your lungs. To help prevent this effect, drink plenty of fluids unless your doctor tells you otherwise.

Tell your doctor right away if you have any of these unlikely but serious side effects: mental / mood changes (such as hallucinations, irritability, nervousness, confusion), ringing in the ears, trouble urinating.

A very serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction may include: rash, itching / swelling (especially of the face / tongue / throat), severe dizziness, trouble breathing.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

Chlorphenamine – Precautions

Before taking chlorpheniramine, tell your doctor or pharmacist if you are allergic to it; or to dexchlorpheniramine; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Consult your pharmacist for more details.

Before using this medicine, tell your doctor or pharmacist your medical history, especially of: breathing problems (such as asthma, emphysema), certain eye problems (glaucoma), heart problems, high blood pressure, liver disease, seizures, stomach problems (eg, ulcers, obstruction), overactive thyroid (hyperthyroidism), urination problems (eg, difficulty urinating due to an enlarged prostate, urinary retention).

This medicine may cause dizziness, drowsiness, or blurred vision. Alcohol or marijuana can make you dizzy or sleepy. Do not drive, use machinery, or do anything that requires vigilance or clear vision until you can do it safely. Limit alcoholic beverages. Talk to your doctor if you are using marijuana.

To minimize dizziness and lightheadedness, get up slowly when getting up from a sitting or lying position. Liquid products may contain aspartame, sugar, and / or alcohol. Caution is advised if you have diabetes, alcohol dependence, liver disease, phenylketonuria (PKU), or any other condition that requires you to limit / avoid these substances in your diet. Ask your doctor or pharmacist about the safe use of this product.

Older adults may be more sensitive to the side effects of this drug, especially drowsiness, dizziness, low blood pressure, confusion, constipation, or trouble urinating. Drowsiness, dizziness, and confusion can increase the risk of falls.

In young children, this drug may cause agitation / excitement rather than drowsiness. During pregnancy, this drug should be used only when clearly needed. Discuss the risks and benefits with your doctor.

Chlorphenamine – Side Effects

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop using chlorpheniramine and call your doctor at once if you have:

  • Fast or uneven heart rate;
  • Humor changes;
  • Tremor, seizure (convulsions);
  • Easy bruising or bleeding, unusual weakness;
  • Feeling short of breath; or
  • Little or no urination.

Common side effects can include:

  • Dizziness, drowsiness;
  • Dry mouth, nose or throat;
  • Constipation;
  • Blurry vision; or
  • Feeling nervous or restless
Website | + posts

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.

Similar Posts

Leave a Reply

Your email address will not be published. Required fields are marked *