Which antibitic should I take if I think my wisdom impacted tooth is causinginfection--amoxicillin?

Typically. Your dentist is the best source of that advice but Amoxicillin is typically used with no history of penicillin allergy.
Amoxicillin. Amoxicillin is a good starting point as long as you aren't allergic to it. You will need to see your dentist to see if your wisdom tooth needs to be extracted. You want to treat the cause of the problem not only the symptoms.
See dentist instead. If your widom tooth is causing an infection, the cure is not antibiotics, . ...The cure is seeing your dentist. It might just be a gum problem around the wisdom tooth, or of course, it could be the tooth itself. Your dentist will take an x-ray, determine the cause and offer solutions. Call today.