Each ml contains: Chlorpheniramine Maleate IP      10              mg

Phenyl mercuric nitrate 0.02 % w/v

Chlorpheniramine is used to prevent allergic reactions and for pruritus therapy in dogs and cats. In addition to the antihistamine effect for treating allergies, these drugs block the effect of histamine in the vomiting center, vestibular center, and other centers that control vomiting in animals.

Adverse Reactions and Side Effects
Sedation is the most common side effect.  Antimuscarinic effects (atropine-like effects) also are common, such as the dry mouth and decreased GI secretions.

Large animals:

3-5 ml by IM route Small animals:

0.5-2 ml by IM route

Allergic conditions related to dermatitis, itching, drug reactions and other inflammatory conditions