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Clorotrimeton (Chlorpheniramine)

Active Ingredient: Chlorpheniramine
Dosage:  4, 8 mg
Route of Administration: Oral
Dosage Form: Tablets
Quantity per package: 14, 28 tablets per pack
Availability: Out of stock

Clorotrimeton is an antihistamine drug prescribed for the treatment of sneezing, itching, watery eyes, and runny nose caused by allergies or the common cold. It contains Chlorpheniramine as the main component relieving allergy symptoms. It is released in dosages of 4 and 8 mg.

Clorotrimeton ( is no longer available in the store but you can choose another drug for treating allergies here.


Clorotrimeton is used to treat acute allergic symptoms that present with symptoms of rhinitis, urticaria and conjunctivitis; rhinitis and seasonal conjunctivitis (hay fever, pollinosis); dermographic urticaria; insect bites; hives; other causes of pruritus itching, hives and angioedema.

Dosage and administration

The drug comes in the form of oral tablets. Typically, tablets are taken every 4 to 6 hours, as needed. Follow the instructions on the prescription label carefully and ask your doctor or pharmacist to explain anything you do not understand. Take the drug as directed. Do not increase or decrease the dose, or take it more often than prescribed by your doctor.


  • Hypersensitivity to any of the components or to other antihistamines with similar chemical structure;
  • Treatment with MAOI;
  • Age under 3 years;
  • Narrow-angle glaucoma;
  • Stenosis peptic ulcer;
  • Pyloroduodenal obstruction;
  • Prostatic hypertrophy and obstruction of the bladder neck;
  • Bronchial asthma;
  • Increased intraocular pressure;
  • Hyperthyroidism;
  • Hypertension.

Side effects

Side effects of Clorotrimeton are mild or moderate drowsiness, hives, rash, anaphylactic shock, sensitivity to light, excessive sweating, chills, dry mouth, nose and throat, CNS depression, restlessness, anxiety, fear, insomnia, tremors, seizures, weakness, vertigo, dizziness, headache, flushing, paleness, dyspnea, diaphoresis, nausea, vomiting, anorexia, polyuria muscle cramps, dysuria, bladder sphincter spasm, urinary retention, hypertension, palpitations, tachycardia, arrhythmias, anginal pain and cardiovascular shock.

See also  Xyzal (Levocetirizine)


In case of overdose, call the poison control helpline at 1-800-222-1222. Information is also available online at If the victim has collapsed, has had a seizure, has difficulty breathing, or cannot wake up, call emergency services immediately at 911.


Avoid using Clorotrimeton with IMAO, alcohol, tricyclic antidepressants, barbiturates or other CNS depressants. Antihistamines can inhibit the action of anticoagulants.

The use of antihistamines should be discontinued approximately four days before the administration of dermatological tests since these agents can prevent or decrease positive reactions to dermatological reaction indicators.