LMNT Citrus Salt: aggressive sodium dose for post-sweat rehydration without sugar
Each stick pack delivers 1,000 mg sodium, 200 mg potassium, and 60 mg magnesium—a salt-forward ratio designed for active recovery and sauna use. No sugar, no artificial sweeteners, just electrolytes in a ratio the brand spent years validating. One stick dissolves in water; most people find 1–2 packs daily covers their electrolyte gap, though you can dial it up or down depending on sweat rate.
Electrolyte replacement is well-established for preventing hyponatremia, dehydration, and muscle cramping in athletes and during prolonged fasting or heat exposure. Observational and mechanistic evidence strongly supports the need for sodium, potassium, and magnesium in these contexts. The specific formulation (LMNT's ratio and dose) has not been tested in RCTs, but the underlying electrolyte science is robust and uncontroversial.
Mechanism
LMNT provides sodium, potassium, and magnesium—three electrolytes critical for nerve conduction, muscle contraction, and fluid balance. Sodium and potassium maintain the Na+/K+-ATPase gradient; magnesium is a cofactor for hundreds of enzymes and supports ATP synthesis. In states of dehydration, fasting, or high sweat loss, electrolyte supplementation can restore plasma osmolality and cellular function.
“Nine adult riding horses performed on a treadmill a competition exercise test (CET) and 24 h later a standardised exercise test (SET) at mean temperature 28 degrees C and relative humidity 58%.”
“PURPOSE: This work examines whether sodium supplementation is important in prevention of hyponatremia during continuous exercise up to 30 h and whether any distinguishing characteristics of those developing hyponatremia could be identified.”
Caveats
LMNT has not undergone a branded RCT. The optimal sodium-to-potassium-to-magnesium ratio for different contexts (exercise, fasting, heat) remains debated; LMNT's 1000 mg sodium / 200 mg potassium / 60 mg magnesium per packet is reasonable but not uniquely validated. For most people eating a normal diet, additional electrolyte supplementation is unnecessary; the product is most relevant during intense exercise, prolonged fasting, or ketogenic diets where electrolyte loss or intake is high. Excess sodium intake carries cardiovascular risk in salt-sensitive individuals.
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