LMNT Electrolytes review: definitely well worth it

We’d buy LMNT if you sweat hard, eat low-carb, fast, or want a lot of sodium and no sugar. We’d leave it if you’re sedentary, you’re on a sodium-restricted diet, or salty drinks taste unpleasant. High sodium isn’t right for casual users or anyone with high blood pressure, and the salty taste is the point.

Quick answer

1,000mg of sodium per packet — roughly double Liquid I.V. and around three times a typical electrolyte tablet — with zero sugar. Excellent for heavy sweating, low-carb eating, and sauna use. Genuinely too much for a sedentary person drinking it at a desk.

The sodium number in context

Most electrolyte products sit somewhere between 300mg and 600mg of sodium per serving. LMNT sits at 1,000mg, alongside 200mg potassium and 60mg magnesium.

That is a deliberate position, built on the argument that active people and low-carb eaters lose considerably more sodium than standard guidance assumes — through sweat, and through the increased sodium excretion that accompanies low insulin levels on a ketogenic or low-carb diet.

The argument is reasonable for those populations. It becomes considerably less reasonable when the product is used as general “hydration” by someone whose diet already contains plenty of sodium and who is not sweating heavily.

Who this genuinely helps

• Heavy sweaters and endurance athletes, especially in heat, where sweat sodium losses are substantial.
• Low-carb and keto eaters, who typically excrete more sodium and often feel noticeably better replacing it.
• Sauna users, for the same reason as heavy sweating.
• People who feel dizzy or headachy on standing after exercise or fasting, where sodium is a plausible contributor.

Who should be cautious

If you have high blood pressure, kidney disease, heart failure, or are on a sodium-restricted diet, 1,000mg in a single drink is a meaningful addition to your daily intake and is worth discussing with your doctor before making it a habit. This is not a scare note — it is simply a large dose of a nutrient many people are already told to limit.

For a sedentary person eating a normal diet, this product solves a problem they may not have.

Taste, honestly

Salty. Some flavors carry it well — citrus and chocolate variants have their devotees — and some people never adjust. Mixing into a larger volume of water than the packet suggests helps considerably.

The zero-sugar formulation matters here: with no sugar to round it out, the salt is far more prominent than in a conventional sports drink. This is the most common reason people abandon it.

Cost

Expensive per serving relative to the category, and considerably more expensive than mixing your own with salt, potassium chloride, and magnesium. You are paying for formulation, convenience, and flavor development. That is a legitimate thing to pay for, but the DIY version is genuinely cheap if you are willing to make it.

Who should buy it

Athletes, heavy sweaters, sauna users, and low-carb eaters. If you fit those categories, the high-sodium formulation is not a gimmick — it is the reason to choose this over competitors, and many people in those groups notice a real difference.

Who should skip it

Sedentary buyers looking for general hydration — that is what water and a normal diet are for. Anyone on a sodium-restricted diet or managing blood pressure, absent medical advice. Anyone who wants a mild, pleasant everyday drink, where Cure or Liquid I.V. suit better.

Final verdict

Definitely well worth it for the right person, and genuinely the wrong product for everyone else. LMNT is honest about what it is; the problem is that it is frequently bought by people who do not need 1,000mg of sodium. Match the dose to your actual sweat rate and diet.

See our best electrolyte powders guide, and our no-added-sugar comparison.