ms state
I've been using this the last couple of years.
Trace Minerals Research Endure Performance Electrolyte. I used to get totally drained from a good bike ride, but now I recover quickly with this stuff. Its concentrated - a bottle lasts me a year. I use it before, during, and after. Hydrating doesn't do me any good if my electrolytes are off.
https://www.allstarhealth.com/de_p_r...lectrolyte.htm
(i don't know the vendor, its just from a google search).