"i heard/felt something in my shoulder tear ( torn tendon in shoulder ). went to dr when ibuprofen and paracetamol no longer worked. prescribed 500mg naproxen twice day. this was last wed. it&#039;s now sunday and the constant dull pain down my arm has come back. the naproxen worked really well for about 48 hours. it didn&#039;t stop the agony every morning. painful when changing gear when driving (uk). have mri scan in 10 days. no side effects although my hot flushes ( menopause) seem to have got much worse over the last 2 days ( on clonidine for those)"