4-in-1 Calcium Supplements for Women & Men
- Calcium
- Capsule
- Vitamin B12, Vitamin K2
- 120
- Better rated than 63%
- More reviewed than 70%
Four common nutrients bundled into one capsule is this formula's whole pitch, useful mainly if you'd otherwise be buying calcium, D3, K2 and B12 separately.
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How it ranks among the 107 calcium we track
4.7★ across 3,800 Amazon ratings, Bayesian-smoothed toward the category average.
3,800 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
5,000+ bought on Amazon last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 107 calcium we track - how the scorecard works · full calcium data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
This 4-in-1 formula combines 600 mg of calcium citrate with vitamin D3 K2 at 5000 IU and vitamin B12, in a 120-capsule bottle formulated for bone and joint support.
Pairing calcium with D3 and K2 is a common combination since D3 aids calcium absorption and K2 helps direct calcium toward bone rather than soft tissue; this formula adds B12 as a fourth ingredient, which is where the naming comes from. It's positioned as an everyday, general-vitality capsule rather than a calcium-only supplement.
- 600 mg calcium citrate per serving
- 5000 IU vitamin D3 with K2
- Vitamin B12 included
- 120 capsules, vegan-friendly and gluten-free
Who it's for
Fits adults who want calcium, D3, K2 and B12 combined into one capsule rather than taking separate supplements for each. Vegan-friendly and gluten-free labeling widens who it works for.
Strengths and trade-offs
Drawn from this product's published specifications.
- Combines calcium, D3, K2 and B12 in one capsule
- 5000 IU D3 dose
- Vegan-friendly and gluten-free
- 120 capsules per bottle
- Not ideal if already taking these nutrients separately
- No buyer reviews on file to confirm results
Performance notes
Vitamin D3 supports how well the body absorbs calcium, and vitamin K2 is generally included in combination formulas like this to help direct that calcium toward bone rather than arteries or soft tissue. B12 is bundled in as a fourth active ingredient rather than being the formula's main focus.
Specifications
| Brand | 4-in-1 |
|---|---|
| Model | PMD-K2D3B12CAL-120CT |
| Form | Capsule |
| Supplement Type | Vitamin B12, Vitamin K2 |
| Count | 120 |
| Benefits | Bone & Joint Support |
| Flavor | Regular |
| Diet | Gluten Free, Vegan |
| Allergens | Gluten Free, Non-GMO |
Other 4-in-1 calcium
How it compares
This product against the closest alternatives we track in calcium.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| 4-in-1 Calcium Supplements for Women & MenThis product | 4.7 / 5 | 3,800 | 4.6 / 5 |
| Nature Made Calcium Magnesium Zinc with Vitamin D3NATURE | 4.8 / 5 | 19,900 | 4.7 / 5 |
| Nature's Bounty Calcium Magnesium & Zinc CapletsNature's | 4.7 / 5 | 23,000 | 4.6 / 5 |
| Caltrate 600 Plus D3 Calcium and Vitamin D Supplement TabletsCaltrate | 4.7 / 5 | 16,400 | 4.6 / 5 |
| Citracal Slow Release- Calcium 1200 mg with Vitamin D3Citracal | 4.7 / 5 | 11,909 | 4.6 / 5 |
Similar calcium from other brands
Questions about the 4-in-1 PMD-K2D3B12CAL-120CT
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What does the 4-in-1 in the name refer to?
The formula combines calcium citrate, vitamin D3, vitamin K2 and vitamin B12 in one capsule.
How much calcium is in each serving?
600 mg of calcium citrate.
Is this calcium supplement vegan?
It's labeled vegan-friendly and gluten-free.