PRODUCT REVIEWS & BUYING GUIDES
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THE BUYING GUIDE

Third-party tested supplements: our picks and why

This guide to third-party tested supplements covers eleven that Thorne, Momentous and Nordic Naturals list for US buyers.

About this guide

There are two creatine powders, two fish oils, two vitamin D3 products, two whey protein isolates and two magnesium bisglycinates. The eleventh is Momentous Daily Hydration, a light electrolyte drink mix. All eleven appear in NSF's Certified for Sport database. One-time prices run from $16.99 for Momentous Magnesium Bisglycinate to $69.99 for Momentous Whey Protein Isolate. At the label dose, a year costs from about $122 for Thorne Vitamin D-5,000 to about $1,022 for Momentous's whey at a scoop a day. Nordic Naturals' page lists its vitamin D3 gummies at $23.95 but had no Add to Cart button on October 13. We leave them out of the picks until you can order them there. A certifier listing tells you what's in the container, not whether it does anything for your health. Whether to take one at all is a question for our evidence review and your clinician.

Source-based analysis, not hands-on testing. Our method

Cofounder of Superhuman Chambers · About the author. General information, not medical advice. No independent clinical review is claimed.

What the research saysMixedDo creatine, fish oil, vitamin D and magnesium work?

Our magnesium pick
Momentous Magnesium Bisglycinate, manufacturer product image
Photo: Momentous

Momentous

Magnesium Bisglycinate

$16.99US price, checked

Why this one

Two capsules give you 200 mg of elemental magnesium as magnesium bisglycinate, the same amount as a scoop of Thorne's powder. A 30-day bottle is $16.99, the smallest upfront spend in this guide.

The trade-off

A bottle lasts only 30 days, and Momentous's refund policy says delivered products generally can't be returned.

More detail and alternatives

A year costs about $207, against about $316 for Thorne. The dose is under NIH's 350 mg daily upper limit for magnesium from supplements. NSF's Certified for Sport database lists the 60-capsule bottle for all lots, and the label is marked vegan.

Momentous markets it for sleep and calm, but the studies it cites didn't test this product. Our evidence review found no source that establishes a sleep benefit from magnesium in healthy adults. Momentous says to check with your doctor first if you take diuretics, antibiotics or bisphosphonates.

Choose Thorne Magnesium Bisglycinate if you'd rather drink it or want a way to send it back. A scoop of the powder gives the same 200 mg, with only citric acid and monk fruit concentrate added. NSF lists it with 21 lot numbers you can match to your tub. Thorne takes return requests within 60 days, but approved returns carry a 25% restocking fee. It costs more: $52 for 60 scoops, about $316 a year.

Thorne Magnesium Bisglycinate →Compare side by side →
Our creatine pick
Thorne Creatine, manufacturer product image
Photo: Thorne

Thorne

Creatine

$44US price, checked

Why this one

It's one ingredient: 5 g of creatine monohydrate a scoop, which Thorne describes as micronized. A $44 tub holds 90 daily servings, about $0.49 each, or about $178 a year.

The trade-off

Approved returns carry a 25% restocking fee, and Thorne doesn't say who pays return shipping. Thorne doesn't state the net weight or where the creatine comes from, and shows no subscription price.

More detail and alternatives

NSF's Certified for Sport database lists it with 66 lot numbers you can match to your tub. Thorne takes return requests within 60 days of purchase. Momentous's refund policy, by contrast, says delivered products generally can't be returned.

The $84 180-serving tub brings a serving down only to about $0.47. Thorne lists hypersensitivity to creatine monohydrate as a contraindication and tells pregnant users to ask a health-care practitioner first.

Choose Momentous Creatine if a named raw material matters more than a way to send it back. Momentous says it uses Creapure creatine monohydrate from Germany, and it states a 450 g net weight. NSF lists the 450 g jar with 24 lot numbers you can match to yours. It's $42.99 one-time, or $38.69 for Subscribe & Save deliveries after the first. The catch: delivered products generally can't be returned, and the money-back guarantee on its page has no stated terms.

Momentous Creatine →Compare side by side →
Our fish oil pick
Momentous Omega-3, manufacturer product image
Photo: Momentous

Momentous

Omega-3

$39.99US price, checked

Why this one

Two softgels give you 800 mg EPA and 800 mg DHA, in what Momentous calls natural triglyceride form. The oil comes from anchovy, sardine and mackerel sourced from Norway.

The trade-off

A year still costs about $487 at the one-time price, or about $438 on Subscribe & Save after the first delivery.

More detail and alternatives

A 30-day bottle is $39.99, about $1.33 a day or $0.83 per gram of EPA plus DHA. Nordic Naturals' Ultimate Omega 2X Sport costs about $1.87 a day and $0.93 a gram. NSF's Certified for Sport database lists Momentous Omega-3 for all lots.

The softgel is bovine gelatin, and the refund policy says delivered products generally can't be returned. Its 1,600 mg a day is above 1 g. A 2021 meta-analysis found atrial fibrillation risk rose more in trials testing over 1 g a day. Momentous also claims IFOS certification, which we didn't confirm in IFOS's own listings.

Choose Nordic Naturals Ultimate Omega 2X Sport if you want the option to send it back. Nordic takes unmarked, resalable returns of nordic.com orders within 30 days. A 60-day satisfaction guarantee covers US purchases from Nordic or an authorized seller. Two softgels give 1,125 mg EPA and 875 mg DHA, further above 1 g a day. It's $55.95 for a 30-day bottle, about $681 a year.

Nordic Naturals Ultimate Omega 2X Sport →Compare side by side →
Our protein pick
Thorne Whey Protein Isolate, manufacturer product image
Photo: Thorne

Thorne

Whey Protein Isolate

$65US price, checked

Why this one

A scoop gives about 21 g of protein from whey isolate, at 100 calories, according to NSF's listing. At $65 for 30 scoops, it's about $2.17 a scoop, or about $0.10 per gram of protein.

The trade-off

It's sweetened with evaporated cane juice sugar and stevia, and NSF's listing gives 3 g of sugar a scoop. Thorne's own page leaves out calories, sugar and net weight.

More detail and alternatives

Momentous's whey isolate costs about $2.80 a serving and $0.14 a gram. NSF's Certified for Sport database lists Thorne's vanilla powder with 23 lot numbers you can check against your tub. Thorne takes return requests within 60 days.

Its headline says 21 g of protein, but the supplement facts list 25 g of whey protein isolate, with no explanation. The page carries a California Proposition 65 lead warning with no amount given. Approved returns carry a 25% restocking fee.

Choose Momentous Whey Protein Isolate if you'd rather skip the sugar. The Chocolate jar is sweetened with monk fruit and stevia, and NSF's listing gives under 1 g of sugar and 90 calories for 20 g of protein. It costs more: $69.99 for 25 servings, about $2.80 each. Its refund policy generally refuses returns of delivered products, despite a 30-day money-back guarantee on the page.

Momentous Whey Protein Isolate →Compare side by side →

Picks for different needs, not a universal ranking. Prices change, and tax and shipping may be extra.

THE REASONS BEHIND THE PICKS

What matters.
And what doesn't.

A product listing in the certifier's own database comes first. Then we look at the dose per serving against the label and NIH's upper limits, and at what else is in the serving. For protein, lead is part of that. Last come a year's cost at the label dose and one-time prices, and what you can get back if you change your mind. A product you can't order on the maker's own page doesn't get a pick. We don't rank by the muscle, sleep, brain, heart, bone, immune or hydration claims on product pages, which FDA generally doesn't approve before use. Nor do we rank by "clinically effective dose" claims, purity figures without a published certificate of analysis, or certifications we couldn't confirm in the certifier's own listings. A higher dose isn't treated as better.

01A product listing, not just a facility

All eleven products appear by name in NSF's own Certified for Sport database, not just as a seal on the maker's page. NSF says its mark means the contents match the label, with no banned substances or unsafe contaminants. The mark also requires a GMP-certified facility that NSF audits. So "made in an NSF-certified facility" describes the factory, not the product. The Thorne and Nordic Naturals listings give numbered lots, from 4 on one gummy listing to 66 for Thorne Creatine. Momentous's creatine jar has its own listing with 24 lot numbers, plus a second entry for all lots. Its magnesium, fish oil, whey and Daily Hydration listings show lot "All". NSF lists Momentous's whey under an "Essential" name that its page doesn't use.

What to checkSearch the certifier's database for the exact product, flavor and form. Match your container's lot number where lots are listed, and treat a facility claim as a claim about the factory.

02Form and elemental dose

Read the amount of the nutrient itself, not the weight of the whole compound. Both magnesium products give 200 mg of magnesium as bisglycinate: two Momentous capsules or one Thorne scoop. NIH's upper limit for magnesium from supplements is 350 mg a day, and magnesium from food doesn't count toward it. Thorne's Vitamin D-5,000 gives 5,000 IU a capsule, 1,000 IU above the 4,000 IU adult upper limit. Nordic Naturals' gummy gives 1,000 IU, a quarter of it. Both fish oils pass 1 g of EPA plus DHA a day: 1,600 mg for Momentous and 2,000 mg for Nordic Naturals. Both creatines give 5 g of creatine monohydrate a scoop. A Daily Hydration packet has 100 mg of sodium, which Momentous says suits everyday sipping, not heavy sweat losses.

What to checkAdd up what you already get from food and other products. Ask a clinician before going past an upper limit or combining a supplement with medicines, such as the diuretics, antibiotics and bisphosphonates Momentous names for its magnesium.

03What else is in the serving

The two creatines list creatine monohydrate and nothing else. Thorne's magnesium powder adds only citric acid and monk fruit concentrate. Each Nordic Naturals vitamin D3 gummy adds 2 g of sugar from organic tapioca syrup and cane sugar. Daily Hydration's label gives 1 g of total sugars a packet, from organic cane sugar and organic honey powder. NSF types it as vegan, yet every label lists the honey. Thorne's whey isolate is sweetened with evaporated cane juice sugar and stevia, while Momentous's Chocolate whey uses monk fruit and stevia. Both wheys are milk proteins. Both fish oils come in gelatin softgels: bovine for Momentous, an unstated source for Nordic Naturals. Nordic's full ingredient panels came from Fullscript practitioner listings, not Nordic's own pages.

What to checkRead the full Supplement Facts and other ingredients for sugar, honey, gelatin, fish and milk. Look for the panel on the maker's own page.

04Lead in protein powder

Supplements have no federal limit on heavy metals, NPR reported. Consumer Reports tested 23 protein powders and shakes, with results published in October 2025. More than two-thirds had more lead in one serving than CR's 0.5 mcg daily level of concern. Plant-based powders averaged nine times the lead of dairy-protein powders. Both proteins here are whey. Thorne's page carries a California Proposition 65 lead warning but gives no amount. Momentous says its batch results are published through Light Labs, which we didn't review.

What to checkIf lead is your concern, weigh dairy protein over plant protein, and ask the maker for a lead result for the lot you buy.

05A year's cost and the return terms

Vitamin D costs least: about $122 a year for Thorne's capsules. At Nordic's listed price, the gummies would be about $73 a year, but you couldn't order them on its page. The creatines run $174 to $178 a year. Magnesium costs about $207 in Momentous's capsules and about $316 in Thorne's powder. Daily Hydration is about $304 at a packet a day, and Momentous suggests several. The fish oils cost about $487 and $681. At a scoop a day, the wheys cost about $791 for Thorne and $1,022 for Momentous. Thorne takes return requests within 60 days but charges a 25% restocking fee. Nordic Naturals takes back unmarked, resalable products within 30 days and adds a 60-day satisfaction guarantee. Momentous's refund policy says delivered products generally can't be returned.

What to checkPrice a full year at the label dose, not a first-delivery subscription discount. Read the return policy before you open the container.

THE FULL LINEUP

All 11 supplement reviews.

Filter by price & features →

Alphabetical, not ranked. Each review explains who it suits and what to check.

How these reviews were made. These picks come from manufacturer product pages, online store listings, return policies and a Momentous launch release, checked on October 13, 2026. We also used NSF's Certified for Sport database, NIH Office of Dietary Supplements fact sheets, published studies and NPR's report on Consumer Reports' protein testing. Where a maker's page didn't show the full label, we used Fullscript practitioner listings. Doses and purity statements are the makers' own unless a certifier listing or study is named.

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