Allerfin is an oral medication containing 4 mg of Chlorpheniramine maleate per tablet. This prescription medication comes in a package of 30 tablets and is used for treating allergy symptoms. Allerfin contains Chlorpheniramine maleate as its active ingredient in a 4 mg dosage strength. The medication is intended for oral use only and is supplied in a package containing 30 tablets. As this is a prescription medication, it should only be taken under the direction and supervision of a healthcare provider.