Caffeine tablets are commonly available as aminopyrine caffeine tablets, ergotamine caffeine tablets and antipyrine caffeine tablets. All three medications contain caffeine, which has analgesic properties and is mainly indicated for the relief of headaches, etc. Each of them has its own characteristics. 1. Aminopyralid caffeine tablets: can also be used to relieve colds, upper respiratory tract infections caused by fever, and relieve toothache, rheumatic pain, etc.; adverse effects of gastrointestinal, liver, kidney damage, etc.; gastrointestinal bleeding, peptic ulcers are prohibited; can not tolerate non-steroidal anti-inflammatory drugs or large doses of non-steroidal anti-inflammatory drugs, elderly, pregnant women, etc., should be used with caution. 2. Ergotamine caffeine tablets: only suitable for short-term headache attacks, common adverse reactions include numbness and tingling sensation of hands, toes, face, feet and lower limbs (local) swelling, etc.; active ulcers, coronary artery disease, severe hypertension, hyperthyroidism, hepatic impairment, renal impairment and allergic to the product, pregnant women, etc. are prohibited. This product belongs to the national second class of psychotropic substances management of drugs, need to prevent abuse, the risk of fibrosis should be used with caution. 3. Antipyrine caffeine tablets: with sedative effect, can be used for neurasthenia and epilepsy, etc., allergic to the product is prohibited. The above drugs should not be taken on their own, all need to be under the guidance of a doctor.