Antibiotics start working immediately by rupturing the protective cell walls of harmful bacteria, but you may not feel relief ...

Penicillin was the world's first antibiotic, a type of medication that kills or slows the growth of bacteria. After Scottish doctor Alexander Fleming discovered penicillin in a petri dish containing ...

Q: I keep getting urinary tract infections (UTIs), and antibiotics don't seem to work like they used to. What's going on?

Amoxicillin is a type of penicillin, an antibiotic that doctors prescribe to treat bacterial infections. It takes effect quickly, but it may take 24 to 72 hours to see an improvement in your symptoms.

How one needs to take antibiotics can be a little bit confusing because oftentimes you feel better after a few days, but still have several days worth of antibiotics doses to take. Why is that? It’s ...