You reach for your water bottle, chug half of it, and the cramping gets worse. Here's what most athletes don't realize: water alone doesn't replace what you're losing in sweat. You need the minerals that keep your muscles firing—and you need them fast. 

SaltStick FastChews are the only chewable electrolyte tablets clinically proven to start working in 45 seconds.

Formulated to Match Your Actual Sweat Unlike sports drinks or other chews that dump random amounts of sodium into your system, FastChews mirror the exact ratio of electrolytes you lose when you sweat: sodium, potassium, calcium, and magnesium in the proportions your body actually needs. 

Absorbs Through Your Mouth—No Mixing Required The secret is buccal absorption. Pop a chew in your mouth and the minerals that prevent cramping absorb directly through the tissue under your tongue. No water required, though you can drink when you want fluid, not when you need electrolytes.

Easy on Your Stomach During Hard Efforts The sodium comes from sodium citrate instead of table salt, so you get rapid replenishment without the gut distress that can derail your training when intensity spikes.

These chewables deliver 100mg sodium, 30mg potassium, 10mg calcium, and 6mg magnesium per two-chew serving, with only 2g of sugar and 10 calories. They're vegan, gluten-free, and non-GMO, available in ten flavors including options with 15mg of natural caffeine from green tea.

Take two chews every 30 minutes of exercise. Chew completely before swallowing for maximum absorption. Pair with water as needed for hydration.

Endurance athletes from ultrarunners to Ironman triathletes rely on FastChews to stay hydrated and cramp-free during their longest, hottest efforts.

Stop treating cramping like it's inevitable. Get the electrolytes your body actually needs, when it needs them.