Chlorzoxazone tablets are indicated for acute and chronic sprains and contusions of various soft tissues, including muscles, ligaments and fascia, as well as pain caused by muscle soreness and muscle strain after exercise. For muscle spasm and chronic fasciitis caused by central neuropathy, this drug should be taken after meals, 1-2 tablets per time, 3 times a day for adults, and the dosage can be increased at the discretion of patients with severe symptoms. Adverse reactions are mainly nausea, vomiting and other gastrointestinal symptoms, followed by dizziness, dizziness, drowsiness and other neurological reactions. However, the reactions are generally mild and can disappear on their own or be relieved after discontinuation of the drug. It should be used with caution in patients with hepatic or renal impairment and is contraindicated in pregnant and lactating women. This drug is a central muscle relaxant that acts mainly on the spinal cord and subcortical areas to produce a muscle relaxation effect. It takes effect after 1 hour of oral administration, can be maintained for 3-4 hours and is generally effective. The drug is completely absorbed through the digestive tract, and the peak concentration can be reached in 1.5-2 hours, mainly in the muscle, kidney, liver, brain and fat, and the concentration decreases significantly after 6 hours.