Chlorpheniramine Maleate Injection is a sterile H1-antihistamine injectable formulation containing Chlorpheniramine Maleate 10 mg/ml, with benzyl alcohol used as a preservative. It is formulated for clinical and veterinary use to help manage acute allergic and hypersensitivity reactions, including urticaria, pruritus, serum sickness, and allergic reactions associated with vaccines or other triggers.

The formulation provides antihistaminic support by reducing the effects of histamine released during allergic reactions. It may be used as part of the management of acute hypersensitivity, urticaria, itching, serum sickness, and anaphylactic or vaccine-reaction adjunct therapy, where appropriate for the specific patient and product label. In severe anaphylaxis, antihistamines are generally used as adjunctive therapy and should not replace emergency first-line treatment. Administration should follow the approved species, body-weight-based dosage, route, and clinical protocol.

Active Ingredient Function:
Chlorpheniramine maleate is a first-generation H1-histamine receptor antagonist. It helps reduce histamine-mediated symptoms such as itching, redness, swelling, and other manifestations of allergic reactions. Because it is a first-generation antihistamine, it may also produce varying degrees of sedation and anticholinergic effects.

Key Features:

Sterile H1-antihistamine injectable solution
Contains Chlorpheniramine Maleate 10 mg/ml
Benzyl alcohol included as a preservative
Helps manage acute allergic and hypersensitivity reactions
Useful for urticaria and pruritus
May be used in serum sickness management, where indicated
Can provide adjunctive therapy during vaccine or anaphylactic reactions
Suitable for clinical/veterinary use under professional supervision
Dose and route should be determined according to body weight and approved protocol
Composition per vial:

Chlorpheniramine Maleate — 10 mg/ml
Benzyl Alcohol — Preservative
Sterile vehicle — q.s.
Dosage form: Sterile injectable solution

Important:

This is a clinical/veterinary therapeutic product intended for professional use only. Administer strictly according to the approved product label or as directed by a qualified healthcare or veterinary professional. The appropriate dose, route (IM/IV/SC), frequency, and treatment duration should be determined according to the patient’s species, body weight, condition, and clinical response. Monitor for sedation, drowsiness, CNS depression, impaired coordination, and anticholinergic effects**. In severe anaphylaxis, this product should be used only as adjunctive therapy and must not delay appropriate emergency treatment. Use caution in patients with conditions where antihistaminic or anticholinergic effects may be contraindicated.