Non sedating antihistamines generic
This can vary depending on the reason for treating you.
If you are one of the many people who get hay fever each year, you will know all about antihistamines.
While both types of medicine block the actions of histamine, they work on different receptors in different systems of the body.
Some of these medicines are available to buy over the counter from your pharmacist. These medicines come in a variety of forms, as mentioned above.
An allergen is a substance that is foreign to the body and which can cause an allergic reaction in certain people. In most people, the immune reaction to these foreign substances is normal and appropriate. For example, in people with hay fever, contact with pollen in the nose, throat and eyes triggers the mast cells there to release much more histamine than normal.
This excessive release of histamine produces the associated symptoms of itching, swelling, runny eyes, etc.