PT - JOURNAL ARTICLE AU - Young, Gavin TI - Muscle cramps: quinine derivatives likely to be effective but not recommended for routine use due to toxicity; vitamin B complex, naftidrofuryl and calcium channel blockers possibly effective AID - 10.1136/ebm1090 DP - 2010 Aug 01 TA - Evidence Based Medicine PG - 114--115 VI - 15 IP - 4 4099 - http://ebm.bmj.com/content/15/4/114.short 4100 - http://ebm.bmj.com/content/15/4/114.full SO - Evid Based Med2010 Aug 01; 15