Antihistamines Include: First Generation ( Non-selective )

 Ethanolamine- Carbinoxamine. Clemastine, Diphenhydramine. Ethylenediamines- Pyrilamine, Triplennamine Akylamines- Brompheneramine, Chlorpheniramine, Dexchlor pheniramine,Pheniramine,Triprolidine

 Phenothiazines- Methidilazine, Promethizine, trimeprazine Piperidines- Azatadine, Cyproheptadine, Phenindamine Miscellaneous- Astemazole, Loratadine, Terfenadine Second Generation ( Peripherally selective ) Phthalazinone - Azelastine Piperazine - Cetrizine

Refer - Chlorpheniramine maleate 

Allergic conditions

 Antihistamines Include: First Generation ( Non-selective )

 Ethanolamine- Carbinoxamine. Clemastine, Diphenhydramine. Ethylenediamines- Pyrilamine, Triplennamine Akylamines- Brompheneramine, Chlorpheniramine, Dexchlor pheniramine,Pheniramine,Triprolidine

 Phenothiazines- Methidilazine, Promethizine, trimeprazine Piperidines- Azatadine, Cyproheptadine, Phenindamine Miscellaneous- Astemazole, Loratadine, Terfenadine Second Generation ( Peripherally selective ) Phthalazinone - Azelastine Piperazine - Cetrizine

Refer - Chlorpheniramine maleate

Allergic conditions

Dosage-

Adults- 25 to 50mg every 4 to 6 hours As little as 25mg may control symptoms: as much as 600mg daily may be given in divided doses

Children and infants- 5mg/kg/day or 150mg/m2 day divided into 4 to 6 doses

Maximum daily dose is 300mg/day Sustained release - Adults- 100mg in the morning and evening. In difficult cases 100mg every 8 hours may be required Children- do not use in children

Refer - Chlorpheniramine maleate