Anithistamines work by blocking histamine, which can cause allergy symptoms. Side effects of antihistamines may include dry mouth, drowsiness, and more. Follow the links below to find WebMD's comprehensive coverage about how antihistamines work, who should take them, and much more.
Antihistamines for Allergies
WebMD explains types of antihistamines and their use for allergies.
Hay Fever: How Is It Diagnosed and Treated?
Get the basics on the diagnosis and treatment of hay fever from the experts at WebMD.
Tips for Your Allergy Action Plan
Allergy symptoms are manageable when you plan ahead and prepare for pollen and other allergens. Here are five tips from WebMD to help you develop your allergy action plan.
Decongestants and Antihistamines for the Common Cold
Learn more about decongestants and antihistamines -- and whether they'll relieve your cold symptoms.
An Allergy-Free Vacation: It's Possible With Planning
Beaches and mountains are the best bet for allergy sufferers.
What Will Help My Spring Allergies?
Suffer from seasonal allergies? Here’s how to get fast, easy relief.
How to Survive Spring Allergy Season
Get tips on how to manage your hay fever with drugs, nasal sprays, allergy shots, and more.
Tips for Treating the Cold and Flu
What to stock in your survival kit for fighting the cold and flu this winter.
Slideshows & Images
Slideshow: How to Soothe Your Child’s Allergies
Help them fight sneezing, itching, and stuffy or runny noses that come with allergies. See solutions from natural remedies to information on medicines that can help ease your child’s allergies to pollen, dust, dander, and more.
Slideshow: Top Allergy Kit Must-Haves
Be prepared for your next allergy attack no matter where you go. See which medicines you need in your allergy kit to help relieve symptoms.
Slideshow: How to Get Allergy Relief at Home
Get tips for things you can do in your house to ease the sneezing and itchy eyes that are brought on by hay fever.