If citrulline were Rx-only in the US, then I doubt Doctor's Best would make it and I doubt Walmart would sell it: https://www.walmart.com/ip//150061958 https:

If citrulline were Rx-only in the US, then I doubt Doctor's Best would make it and I doubt Walmart would sell it: https://www.walmart.com/ip//150061958 https://www.walmart.com/ip//150061958