Well, the only alternatives for oral NSAIDs are opiod analgesics like Tramadol, nalbuphine, morphine etc.
Another option is to use Capsaicin gels for pain relief which are locally applied and work as a pain killer very effectively.
Massage therapy, hot fomentation, stretches and physical therapy are all way to relieve lower back muscle pain and spasms.
Paracetamol or Acetaminiphen can also be used in place of NSAIDs.
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