I've suffered from extreme allergies all my life from food allergies to skin allergies. I've been on and off almost every brand name allergy medicine for as long as I could remember and the only one I fell back on for a long time was Benadryl though it constantly caused me to pass out for the rest of the day and night. My mother recommended to me to take this though I was skeptical because I had already tried Allegra and Claritin with no luck and ever since I tried it, I've been happy. It's given me the freedom to not worry about feeling drowsy and it's also helped me fight off sudden allergic reactions to food. I carry it around in my purse for emergency sakes and I've also recommended it to friends who even agree that they'll never try anything else.