does bactrim cause nausea
Bactrim itself can cause an upset stomach, nausea & upper abdominal pain, but it's unlikely to be the cause of ALL your symptoms. Either the condition that you were prescribed the Bactrim for is getting worse or something else is going on. As Dr. Rothstein suggested, you need to see a doctor without delay,
Common side effects of Bactrim are mainly gastrointestinal (GI), including loss of appetite, nausea, vomiting. Other side effects of Bactrim include painful or swollen tongue, dizziness, spinning sensation, ringing in your ears, tiredness, or sleep problems (insomnia).