Clean Nutra vs Thorne vs Now Foods vs Momentous: Which Supplement Brand Is Actually Worth Buying in 2026

The US supplement market has enough brands that comparing them is genuinely useful, the differences in third-party testing, formulation quality, and price are large. This piece compares Clean Nutra, Thorne, Now Foods, and Momentous, the four most commonly discussed options in the "credible mid-to-premium" tier.

The four brands, positioned honestly

Clean Nutra. Mid-market evidence-forward brand. Third-party tested, transparent dosages, mid-tier pricing (45 per product). Broad product range covering the core evidence-based supplements plus specialty formulations. Value positioning.

Thorne. Long-established premium clinical brand. NSF and TGA certifications, dosages tuned to research, higher price (80 per product). Historically favoured by clinicians and elite sports (used by USA Cycling, US Olympic team). Strengths: formulation depth, testing standards.

Now Foods. The old-guard mass-market credible brand, around since 1968. Third-party tested, extremely wide product range (vitamins, herbs, protein, sports nutrition). Cheapest of these four. Slightly less premium feel but genuinely serviceable.

Momentous. Newer premium brand (partnered with Andrew Huberman for endorsements). NSF and Informed Sport certified, high-quality formulations, high prices (90 per product). Strong in creatine, protein, magnesium, sleep formulas. Marketing-heavy relative to product-differentiation.

Comparison across what actually matters

Third-party testing / certifications:

• Thorne: NSF Certified for Sport, TGA-registered, in-house testing lab
• Momentous: NSF for Sport, Informed Sport
• Clean Nutra: Third-party tested per batch (varies by product)
• Now Foods: In-house testing + third-party for select products

Winner: Thorne. Momentous close second.

Formulation quality (form of active, dosage matching research):

• Thorne: Best-in-class, e.g. magnesium bisglycinate at effective doses, methylated B vitamins
• Momentous: Strong across their focus categories (creatine, protein, magnesium, sleep)
• Clean Nutra: Solid, evidence-forward formulations at competitive prices
• Now Foods: Adequate for most products, sometimes chooses cheaper active forms

Winner: Thorne. Momentous strong in their narrow focus.

Product range breadth:

• Now Foods: Widest, hundreds of SKUs across vitamins, herbs, sports, kitchen ingredients
• Clean Nutra: Broad, covers most evidence-based supplements
• Thorne: Moderate, mostly evidence-based, less specialty
• Momentous: Narrow, deliberate focus on ~30 products

Winner: Now Foods for breadth; Momentous for focus.

Price for the core evidence-based stack (Vitamin D + Omega-3 + Magnesium glycinate + Creatine):

• Now Foods: ~70
• Clean Nutra: ~100
• Thorne: ~180
• Momentous: ~250

Winner: Now Foods; runner-up Clean Nutra.

Brand transparency:

• Thorne: Excellent, full ingredient sourcing, testing certificates available
• Clean Nutra: Good, clear labeling, batch testing
• Momentous: Good, publishes some testing
• Now Foods: Adequate

Winner: Thorne.

Which brand for which buyer

"I want the highest-quality supplements and money isn't the top constraint."→ Thorne. Best-in-class formulation and testing, worth the premium if you value it.

"I want good quality on the essentials at reasonable prices."→ Clean Nutra or Now Foods. Both fit this profile; Clean Nutra skews slightly more premium.

"I want the cheapest credible options across a broad range."→ Now Foods. 50+ years of history, wide range, low prices.

"I like Andrew Huberman's recommendations and want the same brand he uses."→ Momentous, obviously. Note that the endorsement is a marketing relationship, not a testable product advantage.

"I compete in tested sports and need certified-for-sport supplements."→ Thorne or Momentous. Both have NSF for Sport certification, which is required for many pro/collegiate athletes.

"I just want a decent magnesium and creatine, don't care about brand."→ Now Foods creatine + Now Foods magnesium glycinate. Combined cost ~$30, works fine.

Where all four brands are equivalent

• All four use recognisable, high-purity active ingredients.
• All four are widely available online in the US.
• All four have some form of quality control beyond nothing.
• All four are safe (no counterfeiting risk).

Where the differences actually matter

Certain categories where formulation quality genuinely affects effectiveness:

• Magnesium: Thorne magnesium bisglycinate absorbs meaningfully better than cheap oxide forms. Worth the premium.
• B vitamins: Methylated forms (methylcobalamin B12, methylfolate) matter for people with MTHFR variants. Thorne and Momentous carry these; Now Foods has cheaper options that aren't methylated.
• Omega-3: Purity (heavy metal contamination) matters. Thorne, Momentous, and Now Foods all test for this; Clean Nutra also.

Categories where formulation differences are marginal:

• Vitamin D3: All D3 supplements are essentially the same at the same dosage.
• Creatine monohydrate: Cheap Creapure-sourced monohydrate is identical across brands.

The mistake to avoid

Don't buy Momentous or Thorne for products where cheaper brands are formulaically equivalent (vitamin D, creatine). You're paying for branding on those specific items.

Don't buy Now Foods for products where formulation quality matters (methylated B vitamins, high-quality magnesium form). You're saving $8 but potentially not getting the effect you paid for.

Bottom line

• Best overall quality if budget allows → Thorne
• Best value across the evidence-based core stack → Clean Nutra or Now Foods
• Best for tested-athlete requirements → Thorne / Momentous
• Best for narrow-focus premium buyer (creatine, protein, magnesium) → Momentous

The right supplement brand isn't a single answer, it's category-dependent. Buy cheap where quality is uniform (creatine, D3); pay up where formulation quality matters (magnesium form, methylated B vitamins). Match brand to product tier, not to loyalty.

Product formulations, testing certifications, and pricing reflect September 2026. Consult a healthcare provider before starting new supplements.

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