Great! After reading these posts I can expect this awful monster ...

Great! After reading these posts I can expect this awful monster like rash to last a couple of weeks???? I was prescribed Bactrim DS 800-160 mg twice a day and I thought it sounded like a large dose. Developed flu like symptoms on day 3 with racing heart, achy body, stomach and muscle cramps. Woke up today (day 6) with itchy hives ALL over my body. Got a cortisone shot at urgent care clinic and taking benadryl. No change in my condition yet. Why don't they take this sh_t off the market? I could have died from it. I have used Bactrim many times for UTI over the years but was never prescribed this super dose which did this to me!!