Although modest alcohol use doesn't reduce the effectiveness of most antibiotics, it can reduce your energy and delay how quickly you recover from illness. So, it's a good idea to avoid alcohol until you finish your antibiotics and are feeling better.
What does alcohol do to antibiotics?
Alcohol interacts directly with some antibiotics and can cause dangerous side effects or make them less effective at removing bacteria. When the body breaks down alcohol, it also produces acetaldehyde, which can cause nausea. Many people experience stomach or digestive side effects when taking antibiotics.