According to the human body clock’s rhythm, blood pressure lowering drugs served three times a day, at 7 am advised respectively, 15:00 and 19:00 to take, sooner or later in the afternoon than twice the amount of medication to be less appropriate. Not taking antihypertensive drugs before going to sleep at night, to prevent hypotension and bradycardia caused by cerebral thrombosis. Rapid excretion antibiotic drugs, in order to maintain a certain concentration in the blood, should medication every 6 hours 1. Anti-inflammatory drugs, such as rheumatic or rheumatoid arthritis patients, more than a day in the morning and morning joint pain heavier. Anti-inflammatory analgesic drugs such as clothing, can increase the dose in the morning for 1 second, the best, and can be removed once the medication noon. Aminophylline should be at around 7:00 in the morning to take the best results. Cyproheptadine at around 7:00 in the morning to take, to make 15 to 17 hours to maintain efficacy, and 19:00 to take, can only be maintained for 6 to 8 hours. Such as aspirin at around 7:00 in the morning (after a meal) taking high efficacy and long-lasting, if taken at 18:00 and 22:00, then less effective.