Allergy medicines (also known as antihistamines) work by blocking the effects of histamine, a chemical our body releases when it detects something it perceives to be harmful, like an allergen or ...

Antihistamines are a type of medication that counteract histamine, a natural chemical released in the body during an allergic reaction ... the histamine reaction without affecting sleepiness.

Antihistamines are a type of medication that counteract histamine, a natural chemical released in the body during an allergic reaction ... the histamine reaction without affecting sleepiness.

Antihistamines are a broad ... should not be taking decongestants without the approval of their physician. If someone comes in presenting with allergy symptoms and they ask the pharmacist for ...