Key information summary
Efficacy & effects
This medication is used for allergic reactions appearing on the skin such as hay fever and urticaria, as well as pruritic skin diseases, including eczema, dermatitis, pruritus, drug rash, and insect bites. It is also effective in alleviating allergic symptoms of the nose, such as allergic rhinitis and vasomotor rhinitis. This medication helps improve overall allergic symptoms.
Dosage
Oral: Chlorpheniramine maleate at a dose of 2-6 mg, taken by mouth 2-4 times daily. Do not exceed 24 mg per day. Injection: Chlorpheniramine maleate at a dose of 5-10 mg, administered subcutaneously, intramuscularly, or intravenously 1-2 times daily.
Precautions
This medication is in injectable form and should be carefully cut when using glass ampoules to avoid glass fragments mixing in. Extra caution is required, especially when used in children and the elderly. The benzyl alcohol contained in this medication can cause serious respiratory problems in premature infants, so it should not be administered to premature or newborn infants. This medication should not be administered to patients with allergies to this medication or similar components, patients with glaucoma, patients with benign prostatic hyperplasia, or patients taking MAO inhibitors. Patients with increased intracranial pressure, hyperthyroidism, peptic ulcers, cardiovascular diseases, epilepsy, bronchial diseases, and liver diseases should use this medication cautiously. During administration, symptoms such as shock, seizures, blood abnormalities, skin rashes, neurological issues, digestive problems, urination difficulties, cardiovascular side effects, and respiratory symptoms may occur, so the condition should be closely monitored. This medication may cause drowsiness, so it is advisable to avoid driving or operating hazardous machinery. Caution should be taken as combining this medication with alcohol or central nervous system depressants may increase drowsiness. Women who are pregnant or breastfeeding should use this medication cautiously as its safety has not been established, and it should only be used when necessary. Special attention must be paid to children as overdosing can lead to hallucinations, agitation, seizures, and in severe cases, death. In elderly patients with potentially diminished bodily functions, careful monitoring is necessary during administration. In cases of overdose, serious side effects on the central nervous system and heart may occur, requiring immediate medical attention.
Side effects
Urticaria, cyanosis, dyspnea, chest discomfort, hypotension, seizures, confusion, aplastic anemia, agranulocytosis, hypersensitivity, hepatitis, jaundice