In general, 72 hours after the sprain can be used to activate the oil, the specific use depends on the sprain swelling, pain and the severity of the injury. Sprain within 72 hours after the first local need to cold compresses, reduce capillary bleeding, in order to improve local swelling, relieve pain, at the same time should pay attention to bed rest, elevate the affected limbs. During this period, it is strictly prohibited to rub, hot compresses and apply blood circulation and blood stasis drugs, so as not to aggravate the condition. Sprain 72 hours later, soft tissue injury into hematoma absorption and tissue repair period, then you can use the active oil. The main function of the oil is to relax the tendons and activate the collaterals, dispel wind and dissipate blood stasis, and can be used for rheumatic bone pain, musculoskeletal pain, bruises, etc., to reduce swelling, pain and other symptoms. Active oil for external use, prohibit internal use, skin wounds can not be used, and can not be used for a long time or a large area, it should also be noted that this drug is prohibited for pregnant women, menstruation and lactating women should be used with caution. If skin allergy occurs after using the drug, it should be discontinued. If the symptoms of sprains are serious, it is recommended that the patient should go to the hospital in time for examination, to exclude the possibility of ligament rupture or even fracture, and to carry out standardized treatment after clarifying the cause of the disease, so as not to delay the condition.