I was on the Benicar for exactly two days. After the first dose, I experienced hives and itching so bad on both legs that I scratched them raw. The next day I tried again and ended up at the doctor's office within 30 minutes. Hives, swelling and blocked airways. Not the first time I had to go to my allergists office unannounced. My husband calls them from the car while we are on the way and the epinephrine is ready when we get there. I am allergic to so many different things that I now carry a small bottle of epinephrine and some syringes and my husband or I administer .2 cc epi if the reaction is a bad one. If that doesn't produce results then off I go to the nearest ER, statcare, or the allergist's office (whichever is closest). Most of the time, though I control the reactions with the melt in your mouth Benadryl. Thank goodness, they came out with that, I used to chew the caplets to get them into my system faster - UGH!!
Hope you feel better!
Dx: Lupus, sjogren's, celiac, severe allergies.
Meds: Plaquenil, Zyrtec, Prilosec, Nasacort, Prednisone, Prozac daily.
Meds: Epinephrine, Benadryl, albuterol (as needed).