Allegra D provides effective relief from the symptoms of seasonal allergies including itchy, watery eyes; itchy palate; sneezing and runny nose.
So whether you suffer from allergies secondary to dogs, cats, pets, pollen, ragweed, dander, mildew, dust, mold, feathers, etc. Allegra D will provide relief.
Distinct from the current over-the-counter and many prescription antihistamines, Allegra D, provides relief without causing drowsiness. In fact, regulations require all antihistamines that cause drowsiness to caution users concerning the operation of a motor vehicle or heavy machinery. Allegra does not carry any such label. Therefore, with Allegra D you can continue your normal activities without feeling drowsy or tired.
Allegra D is an antihistamine that works by blocking the action on histamine, when antibodies latch onto mast cells, the mast cells release histamine, a chemical that causes blood vessels in the nose to dilate and leak fluid into surrounding tissue. This results in swelling, itching and nasal discharge. Allegra D blocks the release of histamine so these symptoms of watery eyes, itchy palate, sneezing, stuffiness, runny nose, etc. are significantly decreased.
A common question is what is the difference between Allegra and Allegra D? The difference is Allegra-D combines antihistamine with the nasal decongestant pseudoephedrine. The psuedoephedrine causes a narrowing of the blood vessels in the nose this leads to a clearing of the nasal congestion. This is why so many doctors prefer Allegra D over Allegra.