However, those with more severe allergies may find that over-the-counter options aren't strong enough, and should consult with their doctor about prescription antihistamines, or other medications ...

Inflammation is responsible for congestion. That's where antihistamine prescription nasal sprays, such as azelastine (Astelin and generic) and olopatadine (Patanase), come in. "Studies have shown ...

Most antihistamines are available OTC without a prescription but you should seek the advice of a healthcare provider before taking this or other drugs. Any medication taken during pregnancy is ...