Fotarine extended-release and enteric tablets, both of which are mainly composed of diclofenac sodium, are mainly used to treat various kinds of mild to moderate pain, including headache, toothache, joint and bone pain. The main ingredient, diclofenac, has a short half-life and requires repeated dosing, which is very inconvenient and has a certain irritating effect on the stomach, so enteric tablets or extended-release tablets are often used in clinical practice. Enteric tablets do not disintegrate in the stomach, which can reduce the irritation to the stomach and reduce the probability of gastric ulcer and gastric bleeding. Extended-release tablets have a long duration of action and require only 1 dose/day, reducing the number of doses and increasing patient compliance. However, it should be noted that both drugs should be swallowed whole, not divided or chewed. The difference is that enteric tablets should be taken before meals, while extended-release tablets should be taken after meals or with food.