Usually there are several types of pain medications with less side effects as follows: First, antispasmodic and analgesic drugs, mainly used for pain caused by gastrointestinal spasm and other smooth muscle spasm, such as scopolamine hydrochloride, scopolamine, atropine and other drugs, which usually only act on the gastrointestinal and other smooth muscles, and do not act on the central nervous system, so the side effects are relatively small. Second, non-steroidal anti-inflammatory drugs, such as para-aminosalicylic acid, compound aminobarbital, indomethacin and other drugs, such as aspirin, ibuprofen, fenpropathrin, Advil, Enzyme, Celecoxib, etc., the effect is relatively weak and non-addictive, so the use is relatively widespread, the efficacy is also more accurate. They can be used for trigeminal neuralgia, fatigue pain, women’s menstrual cramps, and peripheral aches and pains caused by colds, and both of these drugs are painkillers with fewer side effects.