By RecoverFitNow Editorial

A tub that makes 90 drinks can cost less than a box of 30 electrolyte sticks. Does that make Key Nutrients the obvious buy—or are you paying LMNT for something that matters?

The important difference is inside the serving. These powders take very different approaches to sodium, so treating them as interchangeable misses the reason to choose either.

The comparison that matters first

*Key Nutrients nutrition figures refer to the Watermelon 387 g pack and its supplied label: one 4.3 g scoop, 90 servings. The exact Watermelon/90-serving listing was checked October 10, 2026: $39.99, but marked unavailable at the time of checking. Listed prices are not a guarantee that an order can currently be placed. LMNT pricing is for Citrus Salt, before tax and any promotions. Sources: Key Nutrients and LMNT Citrus Salt.

Why LMNT’s sodium changes the decision

LMNT supplies roughly nine times as much sodium per serving. That is a meaningful formulation difference, not proof that it hydrates everyone nine times better.

Sweat losses and fluid needs vary with the person, activity and conditions. The National Athletic Trainers’ Association recommends individualizing fluid replacement; under normal circumstances, water is generally sufficient for activity lasting less than an hour. Longer sessions and substantial sweating can change the requirements. Read the position statement.

Here is how that affects our buying judgment. For a short, comfortable walk, we would not pay LMNT’s premium simply because its sodium number is bigger. For a long, sweaty session where sodium replacement is part of your plan, its formulation gives you a concrete reason to consider it.

That distinction also keeps expectations sensible: an electrolyte powder is a tool, not a promise of more energy or freedom from cramps.

Where Key Nutrients earns its place

At the listed $39.99 tub price, 30 Key Nutrients label servings work out to about $13.33, compared with $45 for LMNT. That is a $31.67 difference for the same number of drinks—not for equivalent sodium amounts.

Its label also lists added vitamins and minerals, including vitamin C, thiamin and biotin. We would treat those as part of the formula rather than automatically awarding points for a longer nutrient list. Our main reason to shortlist it is simpler: a relatively inexpensive drink with much less sodium per serving.

Do electrolyte drinks help if you have celiac disease?

Celiac disease can damage the small intestine and reduce nutrient absorption, particularly before treatment. That makes mineral intake worth paying attention to—but the right supplement depends on which nutrients you actually need. A gluten-free diet supports intestinal healing, while testing and dietary assessment help identify gaps that need targeted replacement.

For someone who wants a flavored drink that also contributes minerals, Key Nutrients has a useful advantage over LMNT: the Watermelon label lists calcium and zinc alongside magnesium and potassium. A full scoop supplies 100 mg magnesium, 110 mg calcium and 2.9 mg zinc. It is not a complete answer to celiac-related deficiencies: the label says it is not a significant source of iron or vitamin D, and does not list B12 or folate.

Our judgment: Key Nutrients offers broader nutrient coverage; LMNT is the more sodium-focused option. Neither should be treated as a celiac treatment. Stefan uses a little Key Nutrients for flavor, so his drink supplies less than the full-scoop amounts above.

The Watermelon ingredient list includes magnesium citrate, dipotassium phosphate and sodium chloride, with rebaudioside A, a stevia sweetener. It also lists beet and black carrot juice for color. These details identify the specific flavored formula; a different flavor or older tub may have a different ingredient list.

Our pick for the budget-conscious buyer: Key Nutrients, provided a lower-sodium formula fits the purchase. We would not describe it as a cheaper substitute for LMNT’s specific sodium contribution.

The subscription changes the price comparison

The linked Key Nutrients plan offers 30% off the first order and 20% off subsequent orders. For the 90-serving Watermelon tub, that is $27.99 initially and $31.99 thereafter—about $0.31 and $0.36 per serving. LMNT’s listed single-box subscription is $39 for 30 sticks, or $1.30 each. Both are recurring purchases; these are listed prices, not completed checkout totals.

Our view: the ongoing Key Nutrients price is the useful number for a regular buyer. The first-order discount is welcome, but the repeat price determines whether the habit remains good value.

Delivery frequency is selectable, so you do not have to receive a tub every month. The plans reviewed include 30-, 60- and 90-day intervals, with longer options too. Choose the timing that fits how quickly you use it. View the Watermelon subscription options.

For example, Stefan adds a little Key Nutrients to his creatine for flavor on weekdays, so a tub lasts him a long time. That is a different buying pattern from using a full scoop every day. The comparison above uses full label servings to keep the numbers consistent; a smaller amount also supplies proportionally less of the listed electrolytes.

What LMNT’s premium buys

The taste can be a deal-breaker. RecoverFitNow publisher Stefan van Zyl describes the LMNT he tried as so salty that he found it undrinkable. That is one person’s experience, not a verdict on every flavor or mixing strength. Still, it highlights a practical buying point: the formula needs to be something you will actually want to drink. If pronounced saltiness puts you off, we would try a small quantity before committing to a large order.

Besides its formulation, LMNT gives you individually measured sticks. That is practical if a drink needs to fit in a gym bag, desk drawer or travel kit. A tub is convenient at home; packets remove the need to carry and measure loose powder.

Citrus Salt contains salt, citric acid, magnesium malate, potassium chloride, natural lemon and lime flavors, and stevia leaf extract. If sweetening is the issue, the brand’s Raw Unflavored option lists only salt, magnesium malate and potassium chloride. LMNT’s flavor-specific ingredients.

Our pick for deliberate higher-sodium use: LMNT. Its premium is easier to justify when the sodium level and packet convenience both solve a problem for you.

What gluten-free shoppers should know

Both manufacturers present gluten-free claims. Those claims should not be described as independently verified gluten-free certification: we have not established that certification for either product.

LMNT provides useful manufacturing detail. It says its facilities also make products containing allergens, with cleaning and specified allergen swabs between relevant production runs. Its support page says finished products are not tested for allergens. That is distinct from the electrolyte, microbial and heavy-metal testing described on its quality page. Allergen controls · Quality and testing.

We have not verified equivalent exact-product cross-contact information for Key Nutrients. That is a documentation gap, not evidence that it contains gluten. For shoppers who need stronger confirmation before buying, our gluten-free label guide explains the questions that matter.

Which would we buy?

• Choose Key Nutrients for lower cost per drink when a lower-sodium formula is what you want.
• Choose LMNT when a substantial sodium contribution and individual packets justify the higher price.
• Choose water when you simply need a drink for ordinary, shorter activity and have no specific reason to supplement electrolytes.

Neither powder supplies the protein-and-carbohydrate combination some readers mean by a recovery drink. If that is your goal, our recovery-drink comparison addresses a different purchase.

This comparison uses product documentation and published guidance, with Stefan’s personal taste experience identified separately. It is not a controlled head-to-head trial. Product links are not affiliate links. If you have been advised to restrict sodium, potassium or fluids, check with your clinician before adding electrolyte products. See our methodology.