Sedating antihistamines for
Chlorphenamine is the antihistamine most used in an emergency situation such as anaphylaxis, and may be given by injection in this situation.
Diphenhydramine (Nytol®) is sold over the counter as a sleep remedy.
It is thought that antihistamines block H1 receptors in the area of the brain which creates nausea in response to chemicals in the body.
Antihistamines are a group of medicines which act by blocking the action of the chemical called histamine in the body.
Either H1 or H2 histamine receptors can be blocked by medicines, but the group commonly known as antihistamines blocks the H1 receptor.
Generally, antihistamines have been classified into two groups: All antihistamines work pretty well to reduce symptoms of allergy.
Your doctor or pharmacist may advise or prescribe a particular antihistamine depending on the cause of your allergy and on whether you require a sedating or non-sedating medicine.
Search for sedating antihistamines for:
While this is a helpful response, it also causes redness, swelling and itching.