Quinine derivatives
avoid quinine derivatives in the management of muscle cramps because of the potential of toxicity; consider their use in select patients once potential side effects are taken into account.
First-line agents
consider vitamin B complex, CCBs such as diltiazem, or naftidrofuryl as first-line agents in the management of muscle cramps.
2.Timothy M Miller, Robert B Layzer. Muscle cramps. Muscle Nerve. 2005 Oct;32(4):431-42. ⋅
4.Gavin Young. Leg cramps. BMJ Clin Evid. 2009 Mar 26;2009:1113.