Questions, answered plainly.

1 scoop per liter, or 4 scoops per gallon (3.785 L) of water. That delivers 2,000 mg sodium, 1,000 mg potassium, 90 mg magnesium, and 180 mg calcium across the day. Stir or shake briefly — it dissolves cleanly within a few seconds.

The intent is a single gallon you refill as you go. Sip throughout the day rather than drinking it all at once.

One sachet per 20 fl oz (591 mL) bottle. It's the same formula as the tub, scaled to a single bottle. If you're filling a 32 oz bottle, use approximately one and a half sachets; for a 16 oz bottle, about three-quarters of one sachet.

Tub: 1 scoop per liter or 4 scoops per gallon. Sachet: one per 20 fl oz (591 mL) bottle. Mix and drink. Quick Rehydrate is sized for single bottles or gallon serving — use the format that fits your day.

Per 20 fl oz sachet: 469 mg sodium, 117 mg potassium, 14 mg magnesium, 12 mg calcium, and approximately 2.4 g of dextrose — the small amount of glucose that activates SGLT1 co-transport in the small intestine, the same sodium–glucose co-transport mechanism behind WHO oral rehydration therapy.* Per gallon (4 scoops): 3,000 mg sodium, 750 mg potassium, 90 mg magnesium, 75 mg calcium, 15 g dextrose.

* This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

The doses are measured amounts, not minimums. More is not better here — sodium in particular needs to stay in proportion to your water intake. Stick to the recommended dose unless a clinician has given you specific guidance.

Yes. For Normal formula, using a half-scoop in a half-gallon gives the same ratio at lower total intake. Scaling down is fine; the electrolyte ratios stay constant.

Almost certainly yes. The citrate minerals are hygroscopic — they absorb moisture from the air, which causes clumping. It's cosmetic. Break the clump up and measure normally; it dissolves the same way and the composition hasn't changed. To prevent it: keep the lid sealed tight, store the tub somewhere dry, and avoid leaving a wet scoop in the container.

Use it within 90 days of opening for best quality. After that, clumping becomes more significant and moisture exposure accumulates — it won't harm you, but the powder may be harder to work with and consistency across scoops may drift slightly. Sachets are individually sealed and don't have this concern.

Sealed shelf life is pending co-packer stability data. Expiration date is printed on the label.

Stability data is in progress with our co-packer. The expiration date on the package is the definitive answer; this page will be updated once the data is final. In the meantime, store sealed containers in a cool, dry place away from direct sunlight.

Not instantly, but don't let it sit in a warm car all day. Quick Rehydrate contains dextrose — a simple sugar — which makes a mixed bottle more hospitable to microbial growth if left warm for extended periods. If you mix it, drink it within a few hours. A sealed bottle kept cold is fine for longer. Normal formula has no sugar, so this doesn't apply to it.

The dry powder doesn't require refrigeration. A mixed gallon of Normal formula is fine on the counter or desk throughout the day. A mixed bottle of Quick Rehydrate is best finished within a few hours if kept at room temperature — refrigerate it if you're saving it for later.

Just Electrolyte is sold on Amazon. Use the Shop page to find the current listings.

Returns and order issues are handled through Amazon. Log in to your Amazon account, go to Your Orders, and use the standard return or contact-seller flow. Amazon's return policies apply. If you have a product quality concern that isn't resolved through Amazon, use the contact page and we'll sort it out.

Yes, via Amazon. Subscribe & Save is available on eligible listings and typically offers a discount on recurring orders. You set the frequency, and Amazon handles delivery and billing.

Currently, Just Electrolyte is available through Amazon US. International availability depends on Amazon's shipping options for your country. Check the product listing for current shipping options.