<s>[INST] Hi, My tooth is dying and I am in need of a root canal.  I am in a lot of pain and have been taking pain killers for two weeks now.  I am on extra strenth advil, tylenol, and Ibuprofen.  I am now finding that I am retaining a lot of water.  My legs feel tight and I am puffy all over.  Is this due to the pain killers that I am on or is something else going on? [/INST] Dear friend. Thanks for sharing your concern. Tooth pain is due to tooth decay. This decay is caused by various bacteria, and microbes. Root canal treatment is done to eliminate all the dead and decayed tissues from the teeth and there by aseptically saturated. Thus making the teeth functional again. Puffiness of face and water retention occurs due to kidney disorders. Please visit your physician soon and get your self thoroughly examined. Hope it helps. Thanks. Take care. </s>