I used to partake in one of those flavored intra-workout drinks (Xtend), but when I gave artificial sweeteners the boot it had to go. I started getting my BCAA's by capsule and just drinking water during workouts. That worked. A little while later I was experimenting with the ketogenic diet. That diet requires a higher salt intake, so I started adding a couple twists of Trader Joe's Himalayan Pink Salt Crystals to my water bottle.
I'm not on the keto diet anymore, but I kept the Himalayan pink salt practice. It softens the water slightly, and the electrolytes help keep the engine running smoothly during tough workouts. Purportedly there are 84 trace minerals in Himalayan pink salt including sulphate, calcium, potassium, and magnesium. Give it a shot, and add it to your arsenal.