Momentous Vitamin D3 2000 IU Review 2026: Vegans who want a certified D3 at the dose used in the largest trial
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Our verdict
Momentous Vitamin D3 2000 IU scores 7.6/10. It is one of the few certified options made with plant-based cholecalciferol, delivered in organic olive oil, and it is listed on NSF's Certified for Sport database. Its 2,000 IU dose is the same daily amount used in the VITAL trial, which found it safe over about five years, with no excess hypercalcemia, but also found no reduction in cancer or heart events in healthy older adults. The main drawback is cost: $19.99 for 60 softgels is about 33 cents a day, or $14.99 on subscription, well above the 1,000 IU options here. The product page offers a money-back guarantee, which lifts its support score. Choose it if you need a vegan D3; otherwise a cheaper certified product does the same job. Ask a clinician before you take 2,000 IU daily long term.
Score breakdown
- Safety (30%)8.5/10
- Evidence (30%)6.5/10
- Cost & Value (20%)7.0/10
- Transparency (10%)9.0/10
- Support (10%)8.0/10
Scored per our review methodology.
Who it's for
Best for: Vegans who want a certified D3 at the dose used in the largest trial.
Pricing
$19.99 / 60 softgels (~$0.33/day); $14.99 with subscription (as of 2026-10-02)
| Plan | Price | Notes |
|---|---|---|
| One-time (60 softgels) | $19.99 | About $0.33 per day (as of 2026-10-02) |
| Subscribe & Save | $14.99 | 25% off shown on the product page; confirm ongoing subscription terms at checkout |
What the evidence says
- Momentous Vitamin D3 2000IU appears on NSF's Certified for Sport product listing. NSF says the mark means the contents match the label, no unsafe levels of contaminants were found, the product is free of 290 substances banned by major athletic organizations, and the factory is GMP certified and audited by NSF. (NSF Certified for Sport official listing)
- In the VITAL randomized trial of 25,871 US adults aged 50 and over (men) or 55 and over (women), 2,000 IU of vitamin D3 a day for a median 5.3 years did not lower the rate of invasive cancer or major cardiovascular events compared with placebo, and no excess hypercalcemia was seen. (Manson et al., N Engl J Med 2019, VITAL trial (PubMed))
- A meta-analysis of randomized trials found vitamin D3 raised blood 25(OH)D more than vitamin D2 overall, though the advantage was clearest with large bolus doses and was lost in the daily-dosing comparison. (Tripkovic et al., Am J Clin Nutr 2012 (PubMed))
Pros & cons
Pros
- NSF Certified for Sport, confirmed on NSF's certified product database
- Plant-based (vegan) cholecalciferol in organic olive oil, suitable for vegans
- 2,000 IU matches the daily dose tested in the VITAL trial and stays under the 4,000 IU upper limit
- Product page states a money-back guarantee
Cons & red flags
- About $0.33 a day at full price, more than three times the cost of dotFIT
- 2,000 IU is above the adult RDA; people already taking a multivitamin or fortified foods should add up their total
- Benefit claims about immune health and inflammation go beyond what large trials in healthy adults have shown
- Only 60 servings per container
How it compares
Momentous Vitamin D3 2000 IU scores 7.6/10 in our nutrition & supplements evaluation. See where it lands in the full ranking: Best Vitamin D Supplements of 2026.
- dotFIT Vitamin D-3 1,000 IU review — 8.0/10, adults who want a low-cost, low-dose, third-party certified vitamin d3
- Klean Athlete Klean-D 1000 review — 7.7/10, vegetarian athletes who want a certified, moderate-dose d3 tablet
Frequently asked questions
Is Momentous Vitamin D3 vegan?
Yes. The product page lists plant-based cholecalciferol, organic extra virgin olive oil, a hypromellose capsule and candelilla wax, and labels it vegan.
Is 2,000 IU of vitamin D too much?
It is above the adult RDA of 600 to 800 IU but half the 4,000 IU adult upper limit listed by MedlinePlus. In the VITAL trial, 2,000 IU a day for about five years caused no excess hypercalcemia. Count fortified foods and multivitamins toward your total.
Do I need to take it with food?
The product page says the olive oil carrier means it can be taken without a meal.
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