Benadryl Plus is an effective treatment for allergic rhinitis. Benadryl Plus is the only antihistamine available over the counter combined with a decongestant to unblock your stuffy nose. It works in minutes, clearing up the symptoms of dust & pet allergies as well as hayfever & provides effective relief for up to 8 hours. Treats your hay fever symptoms & nasal congestion with one capsule Antihistamine starts working in 15 minutes Works for up to 8 hours The fastest-acting hay fever plus congestion relief capsule. BENADRYL Plus is a powerful remedy which combines antihistamine & decongestant to alleviate all your allergy symptoms. The antihistamine starts to work in 15 minutes, battling dust, cat & other pet allergies as well as hay fever, whilst the nasal decongestant works fast to combat a blocked nose. Benadryl Plus Capsules is a medicine which is used to relieve the symptoms of hay fever andsimilar allergic conditions. The capsules contain pseudoephedrine hydrochloride, which is a decongestant that relieves nasal & sinus congestion & acrivastine which is an antihistamine that helps relieve allergy symptoms such as sneezing, runny nose & watery eyes.