September 27, 2026 · 11 MIN
Gut Fluid Absorption and Osmolality: Why Your Drink Formula Matters
Not all hydration drinks absorb at the same rate. The science of osmolality, SGLT1 co-transport, and gastric emptying explains why hypotonic solutions at 200-250 mOsm/L empty 20-30% faster than hypertonic alternatives, and why plain water is actually slower to absorb than a properly formulated sports drink.
