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How long does it take for an antibiotic to work? Well, it depends upon the type of antibiotic and how serious the infection is. Most antibiotics should work between 24-48 hours. Use the information in this article to decipher whether it is worth waiting or if you should call the doctor, nurse or pharmacist for input. Antibiotics directions and instructions.
How long do antibiotics take to work? I was given antibiotics (amoxicillin) for an abscessed tooth about 2 weeks ago which I felt decreased the pain after a couple of days, following which I had it root filled. After the root filling the pain never really settled down properly so I went back to my dentist.