Best Salt Supplements, Ranked by Sodium Dose
A "salt supplement" is just a measured way to replace the sodium you lose through sweat — and most people who train hard, work in heat, or eat low-carb lose more of it than food alone replaces. Sodium is the electrolyte you lose in the largest amount (heavy sweaters dump 1,000-2,000mg an hour), and it's the one whose shortfall shows up fastest: cramps, lightheadedness, a dead-legs workout, the dreaded "keto flu." The problem with most "hydration" products is that they're built backwards for this job — light on salt, heavy on sugar. A real salt supplement flips that: a serious sodium dose, the supporting potassium and magnesium, and as little sugar and filler as possible. We scored six widely-available, salt-forward options on a public 6-metric rubric so you can match the dose to how much you actually sweat — led by LMNT, the sodium-heavy mix that put the category on the map.
Top pick
LMNT — LMNT Recharge Electrolyte Drink Mix
1000mg sodium, 200mg potassium, 60mg magnesium, zero sugar, stevia-sweetened, 30 packets
At a glance
Tap a column to sort| # | Best for | Price | ||
|---|---|---|---|---|
| 1 | | Best overall salt supplement | 7.9/10 | $45.00 |
| 2 |  | Best rounded high-salt mix | 7.7/10 | $36.79$44.99 |
| 3 |  | Best widely-stocked option with carbs for fast hydration | 7.2/10 | $19.58$27.99 |
| 4 |  | Best value salt supplement for everyday use | 7.2/10 | $28.49$39.99 |
| 5 |  | Best portable salt supplement | 7.5/10 | $25.16$44.94 |
| 6 |  | Best low-sodium daily sipper (light on salt) | 7/10 | $38.39$47.99 |
Prices pulled from Amazon as of Jun 25, 2026 and are subject to change. The price shown on Amazon at checkout applies.
How we scored
Every product below is scored on six metrics, 0-10 each, with the weighting described on how we review. The criteria specific to this category:
- Sodium dose per serving — for a salt supplement this is the headline number; we favor mixes that deliver a meaningful 500-1,000mg.
- Potassium and magnesium — salt alone isn't a complete electrolyte; the best picks round it out.
- Added sugar — zero is ideal for daily and low-carb use; sugar only earns its place in long endurance sessions.
- Clean label — real salt source, no artificial colors or dextrose fillers, sweetener disclosed.
- Price per serving — what the daily habit actually costs.
- Third-party testing and COA availability.
What to know before buying
- Match the sodium dose to your sweat, not to a label. Sedentary, eating normal carbs? A light 200-500mg serving is plenty. Training hard, sweating, or low-carb? You want 800-1,000mg — which is exactly the gap a dedicated salt supplement fills.
- Salt supplements come in three formats: drink mixes (LMNT, Liquid I.V., Redmond), tablets (Nuun), and liquid concentrates. Mixes give the biggest, most adjustable sodium dose; tablets are the most portable; the right one is whichever you'll actually use.
- Don't ignore potassium and magnesium. Sodium gets the headlines, but cramps and poor sleep are often a potassium or magnesium gap — a rounded mix beats a sodium-only one for everyday use.
- Plain table salt in water is the cheapest salt supplement there is, and it works for the sodium part. You're paying these products for measured dosing, the supporting electrolytes, and a taste you'll tolerate every day.
- If you have high blood pressure, heart failure, or kidney disease, talk to your doctor before deliberately loading sodium. The high-dose guidance here assumes healthy kidneys and a reason to sweat.
Our picks
LMNT — LMNT Recharge Electrolyte Drink Mix
Key specs: 1000mg sodium, 200mg potassium, 60mg magnesium, zero sugar, stevia-sweetened, 30 packets
$45.00Check price on AmazonPros
- 1,000mg sodium per packet is the most aggressive dose in the category — this is a salt supplement first and a flavored drink second
- Zero sugar, no maltodextrin, no artificial colors
- Clean, short label: electrolytes, citric acid, natural flavor, stevia leaf extract
- Built around a published sodium-research point of view, so the salt-forward dosing is deliberate, not accidental
Cons
- 1,000mg sodium is more than a sedentary, normal-carb day needs — dose down with extra water if you're not sweating
- Highest per-packet cost here
- Only 60mg magnesium — fine, but you may want a separate magnesium at night
LMNT — LMNT Recharge Electrolyte Drink Mix
- Third-party testing7/10
- Bioavailability9/10
- Clinical evidence7/10
- Value6/10
- Brand transparency9/10
- Form & absorption9/10
Redmond — Redmond Re-Lyte Hydration Electrolyte Mix
Key specs: 810mg sodium, 400mg potassium, 60mg magnesium, plus calcium & chloride, zero sugar, stevia/monk fruit
$36.79$44.9918% offCheck price on AmazonPros
- 810mg sodium keeps it firmly in salt-supplement territory while pairing it with a strong 400mg potassium — the best sodium-to-potassium balance on this list
- Sodium comes from real (Redmond) sea salt, disclosed on the label, plus calcium and a meaningful chloride dose
- Zero sugar; sweetened with stevia and monk fruit, with an unflavored/no-sweetener version for purists
Cons
- 60mg magnesium is modest for the price tier
- Some flavors lean salty-sweet, which divides taste opinions
- Less independent clinical visibility than LMNT
Redmond — Redmond Re-Lyte Hydration Electrolyte Mix
- Third-party testing7/10
- Bioavailability8/10
- Clinical evidence7/10
- Value7/10
- Brand transparency8/10
- Form & absorption8/10
Liquid I.V. — Liquid I.V. Hydration Multiplier
Key specs: 500mg sodium, 370mg potassium, 11g sugar, stick-pack format
$19.58$27.9930% offCheck price on AmazonPros
- Glucose-plus-sodium formula leverages the sodium-glucose cotransporter for faster fluid uptake — useful when you need to rehydrate quickly
- 500mg sodium is a genuine salt dose, not a token amount
- Sold almost everywhere, so it's the easy grab-and-go pick
Cons
- 11g added sugar per serving — not a fit for low-carb or keto use
- Flavor-forward and sweet; some find it too much
- You're paying partly for sugar you may not need
Liquid I.V. — Liquid I.V. Hydration Multiplier
- Third-party testing6/10
- Bioavailability9/10
- Clinical evidence7/10
- Value7/10
- Brand transparency6/10
- Form & absorption8/10
Key Nutrients — Key Nutrients Electrolyte Recovery Plus
Key specs: 490mg sodium, 350mg potassium, 120mg magnesium, zero sugar
$28.49$39.9929% offCheck price on AmazonPros
- 490mg sodium plus a high 120mg magnesium and solid potassium make it one of the most rounded daily picks here
- Among the lowest cost per serving in the roundup
- Zero sugar, with plausible third-party COAs on the brand site
Cons
- Sodium is moderate — heavy sweaters may want to double the scoop or reach for LMNT/Redmond
- Less public research investment than the category leaders
- Taste is functional rather than outstanding
Key Nutrients — Key Nutrients Electrolyte Recovery Plus
- Third-party testing6/10
- Bioavailability8/10
- Clinical evidence6/10
- Value9/10
- Brand transparency7/10
- Form & absorption7/10
Nuun — Nuun Sport Electrolyte Tablets
Key specs: 300mg sodium, 150mg potassium, 1g sugar, effervescent tablet
$25.16$44.9444% offCheck price on AmazonPros
- Drop-a-tablet format is the most travel- and gym-bag-friendly way to carry your salt
- Low sugar with a moderate, sensible sodium dose for shorter sessions
- Nuun Sport line carries Informed Sport certification for tested athletes
Cons
- 300mg sodium is lower than heavy sweaters or low-carb eaters need from a single serving
- Tablet residue can settle at the bottom of the bottle if it isn't fully dissolved
- Per-serving cost is higher than bulk-tub mixes
Nuun — Nuun Sport Electrolyte Tablets
- Third-party testing8/10
- Bioavailability8/10
- Clinical evidence7/10
- Value7/10
- Brand transparency8/10
- Form & absorption8/10
Ultima — Ultima Replenisher Electrolyte Hydration Drink Mix
Key specs: 55mg sodium, 250mg potassium, 100mg magnesium, plus calcium & zinc, zero sugar, stevia-sweetened
$38.39$47.9920% offCheck price on AmazonPros
- The most rounded micro-mineral profile here — 100mg magnesium plus calcium and zinc, all sugar-free
- Light, pleasant flavor that's easy to drink all day; affordable in bulk tubs
- Good choice if you want the supporting electrolytes without a big sodium hit
Cons
- Only 55mg sodium — too little to function as a real salt supplement on its own
- Best paired with extra salt (or a high-sodium mix) if you're actually low-carb and training
- Marketed as 'hydration' but works more like a daily mineral drink than a salt replacer
Ultima — Ultima Replenisher Electrolyte Hydration Drink Mix
- Third-party testing7/10
- Bioavailability8/10
- Clinical evidence6/10
- Value8/10
- Brand transparency9/10
- Form & absorption8/10
Frequently asked questions
A salt supplement is a measured dose of sodium (usually alongside potassium and magnesium) used to replace what you lose through sweat. Most sedentary people eating a normal diet get plenty of sodium from food and don't need one. The people who do are heavy sweaters, athletes training long or in heat, outdoor workers, and low-carb/keto eaters — all of whom lose extra sodium that food alone doesn't keep up with.
Related reading
Sources
- American College of Sports Medicine Position Stand: Exercise and Fluid Replacement — Medicine & Science in Sports & Exercise, 2007
- Sweat sodium losses in elite athletes — Journal of Sports Sciences, 2007
- Dietary Reference Intakes for Sodium and Potassium — National Academies of Sciences, Engineering, and Medicine, 2019
Last verified: June 26, 2026. See our editorial policy and how we review for details on scoring and update cadence. Canonical URL: https://trustedhealthgear.com/reviews/best-salt-supplement.