can you have a beer while on antibiotics
The advice that you shouldn’t drink alcohol while taking antibiotics does hold true for a small group of anti-infective drugs including metronidazole (Flagyl, Metronide or Metrogyl), tinidazole (Fasigyn or Simplotan) and sulfamethoxazole/trimethoprim (Bactrim, Co-trimoxazole).
Eating grapefruit while on antibiotics can prevent the body from breaking down the medication properly. This can be harmful to your health. One study in six healthy men found that drinking grapefruit juice while taking the antibiotic erythromycin increased the amount of the antibiotic in the blood, compared to those who took it with water .