Antihistamines work by blocking histamine ... Studies on taking vitamin C and zinc have shown mixed results. For example, taking vitamin C hasn’t been shown to prevent a cold, but taking ...

Most OTC and prescription antihistamines begin to work within 30 minutes and reach peak performance levels after one to two hours. But many doctors say we should be taking the medicine before we ...

Allergies happen when your immune system overreacts to a normally harmless substance like dust or pollen. Hay fever, hives and anaphylaxis are all types of allergic reactions. Many of those ...

Though many people think of allergies as only being triggered in the fall or springtime, the reality is that seasonal ...