Different aspirin has different specifications, such as 25, 40, 50, 75, 100, 300mg and so on, according to the instructions of the drug. Aspirin is a non-steroidal anti-inflammatory drug with antipyretic and analgesic, anti-platelet aggregation effect. The commonly used dosage forms are tablets and capsules, and different dosage forms have different specifications, so the specifications of each aspirin are also different, as follows: Aspirin tablets are generally available in 50mg, 0.1g, 0.3g, 0.5g, etc.; Aspirin enteric-coated capsules are generally 75mg; Aspirin enteric-coated tablets are available in 25mg, 40mg, 50mg, 100mg, 300mg, etc.; and Aspirin enteric-coated extended-release tablets are generally 50mg. Aspirin may cause adverse reactions such as nausea, vomiting, epigastric discomfort, tinnitus, and hearing loss after use. It is contraindicated in patients who are allergic to the drug, have active peptic ulcers or bleeding, hemophilia or thrombocytopenia, and severe heart failure. It is recommended to use the drug under medical supervision and read the instructions carefully before use, where the exact specifications of the drug will also be available.