How many amoxicillin taken before an extraction?

Ask your dentist...: I would speak with the dentist/surgeon who is removing the tooth. That professional would know what is best for you in this situation.

Sometimes none: There is very difficult to answer without more information. Some extra require antibiotics, some do not. Perhaps you a thinking about antibiotic premedication as the dentist who will treat you. They can give you the best advice.