For Quinine sulphate the dose is 200-300mg at bed time but this is to alleviate night cramps... and how the hell did I know this?
There's lots of info about dosage on this site: www.nursing.uiowa.edu,sites/adultpain/AdjuvantQuinitt.htm
Sorry I don't know how to type it so you can click straight on but hope it helps.
Actually there was a lot of stuff, I searched under quinine dosage for cramps.