I am taking bactrim (sulfamethoxazole and trimethoprim) and feel dizzy. could it be from this medicine?

Not likely.: If it persists, ask your doctor for another antibiotic that can take its place, and look for another cause of your symptom if it persists after that.

It could be bactrim (sulfamethoxazole and trimethoprim): or the underlying condition which promted the doctor to prescribe you the medication. You should stop the Bactrim (sulfamethoxazole and trimethoprim) and get in touch with your doctor asap. I hope this helps. For more discussion make a virtual appointment at www.healthtap.com/dryetimyan