Medicamentos para as dores de costas são ineficazes

... e perigosos:
http://www.parentherald.com/articles/45796/20160525/painkillers-back-pain-dangerous-ineffective.htm


"Experts have warned that powerful painkillers may no longer be effective against back pain [no better than placebo]. The drugs are also highly addictive and may be dangerous when taken long term."