Two products that are sugar free – popular among ultra runners and endurance cyclists – both in capsule form:
Saltstick
Endurolytes
Having tried the above (and many others) and much experimentation the formula that works for me is:
dissolve in a half liter of water
- a teaspoon of Natural Calm magnesium citrate powder
- quarter teaspoon of salt (sodium chloride)
- pinch of lite salt (mix of potassium chloride and sodium chloride, available at grocery stores)
I drink the above during activities lasting 4+ hours starting around 2-3 hours.
I suffered from severe muscle cramps during longer duration activities; the above has completely solved my issue. If I’m going to be out there for 8+ hours I might drink twice the above.
Note: Excess potassium can be extremely dangerous potentially leading to fatal cardiac arrythmia.
YMMV, NFI…….