The efficacy of Loxoprofen Sodium Patch is anti-inflammatory and analgesic, with side effects such as itching, erythema, contact dermatitis, and stomach upset. The medication should be used under the direction of a physician. Loxoprofen Sodium Patch is a topical non-steroidal anti-inflammatory drug with the efficacy of anti-inflammatory and analgesic, and is indicated for the treatment of osteoarthritis, muscle pain, and swelling or pain caused by trauma. The use of the drug may cause a variety of adverse skin reactions, such as itching, erythema, contact dermatitis, and can also cause side effects such as stomach upset and abnormal liver function. It is contraindicated in patients with allergies, history of aspirin asthma. If any obvious side effects occur after using the drug need to stop, wash and seek medical attention. If there is pain in joints, muscles, etc. need to promptly seek medical attention.