Common causes of a tendon pain at the back of the leg include sciatica, lumbar disc herniation, etc. The following drugs can be taken orally: First, non-steroidal anti-inflammatory and analgesic drugs, such as loxoprofen sodium, celecoxib, ibuprofen extended-release capsules, indomethacin, can promote the nerve inflammatory response to subside and reduce nerve pain symptoms. Secondly, drugs to eliminate neuroedema, such as mydriasis and vilastatin, can promote nerve blood circulation and reduce neuroedema. Third, neurotrophic drugs, such as vitamin B1, vitamin B6, vitamin B12, can promote nerve self-repair and restore normal nerve conduction function. Fourth, glucocorticoids, such as dexamethasone, can quickly relieve nerve inflammation and reduce pain symptoms. After comprehensive treatment with several drugs mentioned above, local pain can be significantly relieved.