LMNT is the product that reorganized this whole category around one number: 1000 mg of sodium per stick. That's the benchmark every other electrolyte powder gets measured against, because sodium is the electrolyte you lose most in sweat and deplete fastest on keto or fasting — and it's the one most mixes quietly under-dose. Where a mainstream 'hydration' packet hands you 50 to 500 mg and a lot of marketing, LMNT delivers a dose that actually replaces what a heavy sweater or low-carb dieter is losing. It pairs that high sodium with a genuinely clean formula — zero sugar, stevia-sweetened, no artificial colors or flavors — plus a sensible 200 mg potassium and 60 mg magnesium. The two honest knocks are price and taste: at about $1.50 a stick it's the priciest mainstream pick here, and the deliberately salty profile polarizes first-time users. But if sodium is what you're actually short on, nothing else in this lineup competes — which is exactly why it's our #1.
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Read the complete Electrolyte Powder guide →The decisive axis, and LMNT defines the top of it. 1000 mg of sodium per stick is the highest in this lineup and multiples of what mainstream mixes deliver — a dose that genuinely replaces what heavy sweat or a low-carb diet flushes out. A flat 10: this is the benchmark every other powder is measured against.
0 g sugar, sweetened only with stevia leaf extract, with no artificial colors or flavors. Fully keto- and fasting-compatible — exactly where a glucose-driven mix fails. Just shy of perfect only because stevia itself is divisive; on the sugar-and-additives metric it's about as clean as the category gets.
A balanced 200 mg potassium and 60 mg magnesium alongside the headline sodium — a sensible, real spread rather than a salt-only hit. Held below the leaders here because it sticks to the core three; Redmond Re-Lyte (#3) adds calcium and 60+ trace minerals, and Ultima (#4) pushes more magnesium. Solid, not maximal.
At about $1.50 a stick ($45 for 30), it's the most expensive mainstream pick in the lineup. The score isn't lower because the price buys the highest verified sodium dose and a clean formula — you're paying for real content, not filler. But as raw cost per serving it loses to Redmond (~$1.07) and the budget picks.
Mixes cleanly with no grit, and the Citrus Salt flavor is well regarded once you adjust — but the deliberately salty profile is polarizing for first-timers, and there's no sugar to round it off. Diluting into more water tames it. A strength for most users after a few servings; a genuine hurdle for a few.
“1000 mg of sodium per serving — a real electrolyte dose.”
The 1000 mg sodium figure is the documented label spec for the Citrus Salt stick and the highest in our nine-product lineup. It's the product's central, auditable differentiator — multiples of mainstream mixes — and the basis for its perfect sodium score.
“Zero sugar, no artificial colors, flavors or ingredients.”
0 g sugar with stevia leaf extract as the only sweetener is consistent with the label. This is what makes LMNT genuinely keto- and fasting-compatible, where a glucose-paired formula like Liquid I.V. is not.
“Formulated for keto, fasting, and athletes who sweat heavily.”
Reasonable and well-aligned with the evidence: the rehydration literature supports replacing sodium when sweat losses are large (Sawka 2007, Shirreffs 1996), and low-carb diets increase sodium excretion. The high-sodium, zero-sugar design genuinely fits these use-cases — though most people eating normally don't need it daily.
LMNT's 1000 mg of sodium per stick is the number that justifies its #1 spot. Sodium is the electrolyte lost in the largest amounts in sweat and the one a low-carb or fasting diet flushes hardest, and the controlled rehydration evidence (Shirreffs 1996) shows that without enough sodium in the drink, extra fluid is simply urinated away. LMNT is built to actually replace that loss rather than gesture at it with a token sprinkle — the gap between it and a 'hydration' packet at 50–250 mg is the difference between a real dose and a label claim.
Most high-electrolyte products lean on sugar to drive absorption and round off the taste. LMNT doesn't: 0 g sugar, stevia-sweetened, no artificial colors or flavors. That combination — high sodium AND zero sugar — is exactly what makes it work for keto and fasting, and it's harder to find than the marketing suggests. The only cost is a sharper, saltier taste, because there's no sugar masking the salt.
Alongside the sodium, LMNT runs 200 mg potassium and 60 mg magnesium — a sensible, balanced trio rather than a salt-only hit. It's enough for most buyers. But if you specifically want a wider mineral profile, Redmond Re-Lyte (#3) adds calcium and 60+ trace minerals from Real Salt, and Ultima (#4) pushes magnesium to 100 mg. LMNT optimizes for sodium first; the rest of the spectrum is good, not best-in-class.
At about $1.50 a stick, LMNT is the priciest mainstream pick here — Redmond is usually cheaper per serving for a comparable salt-forward profile, and Key Nutrients (#8) is roughly half the cost. The honest framing: you're paying for the highest verified sodium dose and a clean formula, which is exactly what a heavy sweater or keto dieter needs. If sodium isn't your bottleneck, that premium is hard to justify and a cheaper mix will do.
LMNT earns its #1 spot by solving the problem the rest of the category quietly ignores: it actually delivers sodium, 1000 mg per stick, several times what mainstream hydration powders give you. Pair that with a clean zero-sugar, stevia-sweetened formula and a balanced 200 mg potassium plus 60 mg magnesium, and it's the obvious choice for anyone on keto, fasting, or sweating hard in heat. The trade-offs are real but narrow. You pay the most per serving of any mainstream pick, and the deliberately salty taste polarizes newcomers until they adjust (diluting into more water helps). And it's genuinely the wrong tool if you eat a normal diet, don't sweat heavily, or have been told to limit sodium — most people in that situation don't need a daily electrolyte powder at all. But for the buyer LMNT is built for, where sodium is the electrolyte actually in short supply, nothing else in this ranking competes. Buy it.
Check LMNT · 1000 mg sodium/serving · 30 stick packs on AmazonThe same salt-forward philosophy with a fuller mineral spread — ~810 mg sodium plus calcium and 60+ trace minerals, usually a little cheaper per serving. Pick this if you want a more complete profile than LMNT's core three.
See it on the list →The mainstream, fast-absorbing pick — but an 11 g sugar drink, so it's an everyday/recovery option, not a keto one. Choose it for general dehydration where sugar isn't a dealbreaker.
See it on the list →The budget zero-sugar pick at roughly half LMNT's cost per serving. Buy it if you want a no-sugar daily mix and don't need a salt-forward keto/endurance dose.
See it on the list →The ACSM's authoritative position stand: because sweat contains substantial sodium, fluids during prolonged exercise and recovery should include sodium to offset losses and aid fluid retention. The foundational evidence behind LMNT's high-sodium positioning — electrolyte replacement, not water alone, when sweat losses are large.
Direct experimental evidence that a drink's sodium content determines fluid recovery: unless sodium is sufficiently high, extra fluid is simply lost as urine. The clearest support for why a genuine sodium dose like LMNT's — not just water — drives effective rehydration.
A review showing heavy sweating can produce fluid deficits of 1–8% of body mass and recommending sodium chloride in the replacement beverage to maintain fluid homeostasis. Context for the heavy-sweat use-case LMNT is designed around.
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