Thorne Daily Electrolytes and Liquid IV Sugar-Free land within 20mg of each other on sodium, at 480mg and 500mg per serving. That near-tie pushes the decision onto everything else on the label, and there the two products diverge sharply.
The short answer: Thorne is cheaper per serving ($1.33 vs $1.56), adds magnesium and calcium that Liquid IV leaves out entirely, and carries NSF Certified for Sport testing. Liquid IV answers with nearly four times the potassium (370mg vs 99mg) and a B-vitamin complex. Neither is a good way to buy sodium, which is worth knowing before you pick either one.
Thorne vs Liquid IV: The Numbers
LMNT is included below because it's the reference point most people arrive with, and because it exposes what both of these products cost per gram of sodium.
| Metric | Thorne Daily | Liquid IV (SF) | LMNT |
|---|---|---|---|
| Sodium | 480mg | 500mg | 1,000mg |
| Potassium | 99mg | 370mg | 200mg |
| Magnesium | 40mg | 0mg | 60mg |
| Calcium | 70mg | 0mg | 0mg |
| Sugar | 0g | 0g | 0g |
| Sweetener | Stevia (Reb M) | Allulose | Stevia |
| Vitamins | None | B3, B5, B6, B12 | None |
| Third-party testing | NSF Certified for Sport | None | None |
| Price/serving | $1.33 | $1.56 | $1.50 |
| $/g sodium | $2.77 | $3.12 | $1.50 |
| Form | Stick pack | Stick pack | Stick pack |
Data verified against manufacturer websites. Prices as of August 2026. See the full 17-brand comparison →
Thorne's sodium comes from Himalayan pink salt, which also puts 750mg of chloride in each packet. Liquid IV's sugar-free line uses allulose rather than stevia, which is the main reason people describe it as tasting closer to a conventional sports drink.
What NSF Certified for Sport Actually Means
This is Thorne's real differentiator, and it's frequently misunderstood as a general quality seal. It isn't. NSF Certified for Sport tests each production lot against roughly 300 substances banned by major athletic organizations, and confirms the label matches what's in the packet.
If you're subject to drug testing through the NCAA, a professional league, or military service, that certification is the reason to buy Thorne, and it justifies the price on its own. Supplements are not pre-approved by the FDA before sale, so contamination risk is a genuine problem in this category rather than a theoretical one.
If nobody tests you, the certification is a nice-to-have you're paying for. Be honest about which group you're in.
Where Liquid IV Wins
Potassium (370mg vs 99mg). This is the largest gap between the two. Liquid IV delivers nearly four times the potassium. Context matters, though: the adequate intake for adults is 3,400mg for men and 2,600mg for women,[1] so even Liquid IV's 370mg is about 11% of a day's target. Neither product solves a potassium gap. Food does.
B vitamins. Liquid IV includes B3, B5, B6, and B12; Thorne includes none. Whether that matters depends on your diet, and for most people it doesn't. Our breakdown of what's in LMNT covers why B vitamins in a hydration drink are usually redundant.
Availability and taste. Liquid IV is in most grocery and drug stores. Thorne is mostly direct and specialty retail. The allulose sweetener also avoids the stevia aftertaste some people can't get past.
Where Thorne Wins
Price. $1.33 vs $1.56 per serving, and $2.77 vs $3.12 per gram of sodium. Thorne is cheaper on both measures.
Magnesium and calcium. Thorne provides 40mg of magnesium as dimagnesium malate and 70mg of calcium. Liquid IV's sugar-free formula has neither. NIH guidance notes that magnesium forms which dissolve well in liquid absorb better than magnesium oxide,[2] and malate is among the soluble forms.
Certification. Covered above, and decisive for tested athletes.
Sweetener. Thorne uses Rebaudioside M, a stevia fraction that carries less of the bitter finish than older stevia extracts.
The Sodium Problem With Both
Step back from the head-to-head and both products look expensive for what they deliver. At $2.77 and $3.12 per gram of sodium, Thorne and Liquid IV are among the pricier ways to buy the mineral that most people are actually shopping for. LMNT runs $1.50 per gram, and tub products go lower still.
Sweat sodium losses during hard exercise run roughly 500 to 1,150mg per liter,[3] and the ACSM position stand on fluid replacement frames sodium replacement against measured sweat losses rather than a fixed dose.[4] One serving of either product covers the low end of a single liter. If you sweat heavily, you'll be using two or three servings, and the cost gap against higher-sodium options compounds quickly. Our ranking of 17 brands by cost per gram of sodium shows where both land in the field.
What's Actually in Thorne Daily Electrolytes
Thorne's label is longer than most of its competitors', and the additions are deliberate rather than decorative:
- Himalayan pink salt supplies the 480mg of sodium and 750mg of chloride. Chloride is the electrolyte nobody markets, and it's lost in sweat alongside sodium.
- Dicalcium malate and calcium silicate provide 70mg of calcium, which almost no competitor includes.
- Dimagnesium malate provides 40mg of magnesium in a soluble chelated form.
- Potassium citrate provides 99mg of potassium.
- Rebaudioside M, citric acid, natural flavor, silicon dioxide, and turmeric handle sweetness, tartness, anti-caking, and color.
Silicon dioxide and turmeric are the two entries that draw complaints from clean-label shoppers. Both are conventional and neither is a red flag, but if your standard is a five-ingredient label, Thorne won't meet it. Our guide to reading an electrolyte label covers which additions are worth caring about.
What About Thorne vs LMNT?
This comes up often enough to answer directly. LMNT has more than double Thorne's sodium (1,000mg vs 480mg) at a similar price ($1.50 vs $1.33), which makes it 46% cheaper per gram of sodium. LMNT also has 50% more magnesium.
Thorne's counter is the NSF Certified for Sport testing, the 70mg of calcium, and the lower absolute price per serving. If you're a tested athlete, Thorne is the answer regardless of the sodium math. If you're not, LMNT delivers considerably more mineral for the money, and the tub products cheaper still.
Which Should You Buy
- Buy Thorne if you're drug-tested, or if you want magnesium and calcium alongside a moderate sodium dose. It's also simply the cheaper of the two.
- Buy Liquid IV if you want the potassium and B vitamins, prefer allulose to stevia, or just want something you can grab at any grocery store.
- Buy neither if sodium is your actual goal. Both are moderate-sodium products at premium prices, and you can get double the sodium for less money elsewhere.
The verdict: Thorne is the better product of the two, and it's cheaper. The certification is real and the extra minerals are real. But this is a matchup between two mid-sodium stick packs priced like high-sodium ones. Pick Thorne if the NSF seal or the magnesium matters to you. If you came here because you want sodium per dollar, neither of these is the answer.
References
- National Institutes of Health, Office of Dietary Supplements. "Potassium: Fact Sheet for Health Professionals." NIH ODS. ods.od.nih.gov
- National Institutes of Health, Office of Dietary Supplements. "Magnesium: Fact Sheet for Health Professionals." NIH ODS. ods.od.nih.gov
- Vitale K, Getzin A. "Nutrition and Supplement Update for the Endurance Athlete: Review and Recommendations." Nutrients, 2022; 14(7):1318. pmc.ncbi.nlm.nih.gov
- Sawka MN, Burke LM, Eichner ER, Maughan RJ, Montain SJ, Stachenfeld NS. "American College of Sports Medicine Position Stand: Exercise and Fluid Replacement." Medicine & Science in Sports & Exercise, 2007; 39(2):377-390. pubmed.ncbi.nlm.nih.gov