How long will it take for antibiotics to start working?

It depends. What is being treated, is it the right drug, are the bugs resistent, the health of the patient and other factors. No short answer.

Related Questions

How long will it take for antibiotics to start working for cystitis? I have taken one tablet and am waiting for some sort of relief! Will a bath help?

A day or two. It takes a day or two for UTI symptoms to start to improve. Keep taking the antibiotic as directed and drink LOTS of fluids to keep high urine flow. You can also ask your doctor or chemist about phenazopyridine (Pyridium® and other brands in the US) to reduce discomfort during the couple days before the antibiotic kicks in. If questions remain, contact the doctor treating you. Read more...

How long will it take for antibiotics to start working for tooth infection?

2 days. It typically takes 2 days to get a blood level of antibiotics. Read more...
~24 hours. It usually takes ~ 24 hours for antibiotic to start working enough for you to start feeling the difference. This is only a generality and depends on the size and location of the infection. Read more...
24 to 72 hours. Antibiotics can start providing relief anywhere from 24 to 72 hours. If you don't have any relief by 72 hours you should call your dentist as you might need a different antibiotic or an emergency dental treatment. For temporary relief you can take OTC NSAIDs or Tylenol (acetaminophen). The only way to cure a dental infection is with dental treatment. Read more...