 [ Symptoms ] what are the risks in an endarterectomy for woman with stenosis at 80 of the right carotidis [ Disease ] i have cmt charcot marie tooth disease a form of muscular dystrophy and drink schwepps tonic water to relieve leg and arm cramps tonic water contains quinine at low levels i have found that when chilled the tonic water tastes similar to grapefruit juice quinine pills are also available but i have read that gastrointestinal distress can result from the pills i hope this helps you best wishes