Indication: Diphenhydramine (Banophen) is an antihistamine that temporarily relieves the symptoms of upper respiratory allergies, hay fever, and the common cold.

Insight:

Dosing: Take diphenhydramine every 4-6 hours.
Dosage forms: Capsules
Adverse events: Drowsiness, dizziness, constipation, stomach upset, blurred vision, or dry mouth/nose/throat may occur.
Mechanism of action: This medication works by blocking a certain natural substance (histamine) that the body makes during an allergic reaction.
Manufacturer: Johnson & Johnson

Sources:

DailyMed - BANOPHEN- diphenhydramine hcl capsule (nih.gov)

Major Analgesic Caplets Banophen, 50mg, 1000s, Compare to Benadryl, ND — Devine Express