Clemastine is an antihistamine and anticholinergic. Clemasitine is a sedating antihistamine, but it exhibits fewer other side effects than most of the widely used antihistamines.

Antacids such as Maalox Antihistamines such as clemastine fumarate (Tavist) Bronchodilators (airway opening drugs) such as albuterol (Proventil, Ventolin) Corticosteroids such as prednisone (Deltasone)

Newer antihistamines that do not cause drowsiness or pass the blood-brain barrier.include the following: loratidine(Claritin.cetirizine(Zyrtec).fexofenadine(Allegra).Desloratadine(Clarinex).Seldane(terfenadine).was.withdrawn from the market

Our vet advised us to get the over the counter antihistimine "Dayhist Allergy" tablets. (Clemastine Fumarate tablets, USP 1.34 mg). It is used for both humans and dogs. It can be found in any drugstore or at 1-800-petmeds (phone#) or 1800petmeds.com for a very inexpensive price. This site also has other alergy meds available for dogs/cats over the counter.

CHECK OUT, allergic pet.com

Chlorpheniramine is an inexpensive OTC antihistamine that can be given every 8-12 hours and is very safe. Other antihistamines that your DVM may let you try are doxepin,clemastine and Temaril-p. Temaril-p I have have seen work wonders - it does have a very low dose of steroid in it, but as long as you use steroids as needed that's fine. It's when you use them long term that they may start to cause problems. If your dog has a red rash, you may want to have your DVM make sure your dog doesn't have a secondary skin infection. If so,this will make the itching worse and some antibiotics may be warrented.