MAJOR Vitamin D3 10mcg (400 IU) - Contains 25mg of Calcium - Dietary…
Our verdict
MAJOR Vitamin D3 10mcg (400 IU) - Contains 25mg of Calcium - Dietary… works out to $0.10 per serving of vitamin d3, at 400IU per serving in tablet form. That puts it below the median of the 290 vitamin d3 products we can price per dose, where the typical serving costs $0.11, a Value Index of 1.1 where the median product is 1.0. One container lasts 100 days at the label dose of 1 serving a day, about $3.00 a month. We could not verify a third-party certification for MAJOR in a public registry. Worked out from the current retail price as of 2026-11-13; confirm the live price on Amazon.com before buying.
Questions about this product
- How much does one serving of MAJOR Vitamin D3 10mcg (400 IU) - Contains 25mg of Calcium - Dietary… cost?
- $0.10 per serving, which is 400IU of vitamin d3 in tablet form, against a typical $0.11 across the 290 vitamin d3 products we can price per dose, a Value Index of 1.1 where the median product is 1.0. Worked out from the current retail price as of 2026-11-13, not the sticker price.
- How long does one container of MAJOR Vitamin D3 10mcg (400 IU) - Contains 25mg of Calcium - Dietary… last?
- 100 days at the label dose of 1 serving a day, which is about $3.00 a month.




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The silence is deafening
Lead with cost-per-dose, not vibes.