The maximum daily dose of painkillers needs to be based on the type of medication, the cause and severity of the pain, and the specific medication. 1. Type of medicine: for example, fenbendazole and painkillers, usually 2-3 tablets per time; morphine and other strong analgesics should not exceed 100 mg a day. 2. The cause and severity of pain: to relieve headache, joint pain, shoulder and neck pain, and cold-induced muscle aches and pains, you can apply ibuprofen as well as aspirin and other non-steroidal anti-inflammatory drugs, it is recommended that once a day can be enough; surgically induced incision pain, it is recommended that the application of diclofenac sodium delayed-release tablets or tramadol hydrochloride delayed-release tablets, 2-3 times a day. In addition, the application of the above drugs, has a certain risk, patients must get the guidance of a specialist, not unauthorized use, so as not to affect the health.