Swelling and pain after tooth extraction is generally caused by inflammation and infection, you can take anti-inflammatory drugs, painkillers to relieve the symptoms, as follows. 1. Anti-inflammatory drugs: such as metronidazole and tinidazole, belonging to the nitroimidazole antibiotics, anaerobic infections have a certain therapeutic effect, can eliminate inflammation, relieve swelling and pain. 2. Painkillers: such as aspirin and ibuprofen, belonging to the non-steroidal analgesic anti-inflammatory drugs, through the inhibition of prostaglandin synthesis, play an analgesic anti-inflammatory effect, which can reduce the pain in a short period of time. All of the above drugs should be used under the guidance of a doctor. The effect of drugs is limited, if the swelling and pain after tooth extraction is serious, or continues to not get better, it is recommended to go to the hospital in time.