I have had an allergic reaction to Bactrim itchy red rash. How long does it take to leave the bloodstream I finished the medication more than two weeks ago. The rash is very light looking but the itch is constant. I have taken Benedryl over the counter hasn t really helped. Should I go back to the physician?
Hello, Welcome to Chat Doctor, The Bactrim is a combination of Trimethoprim and Sulfamethoxazole, it is known to cause itching in the person who are sensitive to products of sulfur group pf Chat Doctor. This