For L4?L5?related lower back pain (often due to Lumbar disc herniation or Lumbar spondylosis), there isn?t one medicine to take continuously long-term; treatment is usually short courses plus physiotherapy. For relief, doctors may use Paracetamol or short-term anti-inflammatories, and if nerve pain is present, medicines like Pregabalin may be prescribed. The most important part is regular exercises, posture correction, and avoiding heavy lifting; consult a doctor to tailor medication safely rather than taking anything daily on your own.