system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What happens to my body when I drink alcohol whilst on antibiotics?
gpt
Some antibiotics shouldn't be mixed with alcohol because the alcohol impairs a step in the breakdown of the alcohol leading to a build up of acetaldehyde which gives you horrible side effects. Not all antibiotics, only some. The alcohol doesn't make the antibiotics not work - they will still work if you drink alcohol but some antibiotics with alcohol will make you feel very sick.