Quinine available over the counter (IF YOU HURRY!!!) Quinine was the original Malaria cure (and preventive medicine).   It is extracted from the bark of the Cinchona tree. It is used in a slew of 'Over the Counter'  Leg Cramp medicines.   Here is an example of what Walmart carries: https://www.walmart.com/search/?query=quinine Walmart is pretty much sold out of anything with Quinine and the on-line order system won't let anybody request any. HOWEVER...   Both Dollar General and Walgreens still have some quantity of the Quinine Leg Cramp medicine available on the shelf. Almost for sure...   Your local Dollar General or Walgreens will be sold out of it in 48 hours.      It is suspected the reason Quinine is effective as a preventative medicine or as a cure for the Corona-19 is because it allows Zink to cross the cell boundaries and stop the replication of the virus RNA strands.    Probably this implies that raising the amount of Zink in your system would help the effectiveness of what ever Quinine you have working in your system.  If you run to Dollar General or Walgreens to get some Leg Cramp medicine with Quinine, you should consider picking up some Zink tablets also.