The four best travel-size electrolyte tablet cases you’ll actually use are: Science in Sport Hydro Electrolyte Tablets, 20-pack in Strawberry Lime, vegan and gluten-free; Nuun Electrolyte Tablets with Vitamins, 4-pack, low calories, multiple flavors; Fluid Tactical Electrolyte Tablets Variety Pack, 40-count with 320 mg sodium and 160 mg potassium; and Nuun Sport + Caffeine Electrolyte Tablets, 6-pack with caffeine. Each offers compact, spill-resistant packaging and quick-dissolve tablets for on-the-go hydration, with clear labels and handy servings. You’ll find practical options if you keep exploring.