You're getting **Calcium** at 667mg and **Magnesium** at 333mg per serving — both within the supplemental range used in bone health research. The softgel format uses rice bran oil as a carrier, which helps the included **Vitamin D3** absorb since it's fat-soluble. That D3 in turn supports calcium absorption, and **Magnesium** helps activate D3 in your body — two synergies working in your favor.

The main limitation is dosing and form quality. **Vitamin D3** at just 400 IU sits well below the 1,000–5,000 IU range most practitioners recommend — you'd need to supplement D3 separately to reach a meaningful dose. **Zinc** is provided as zinc oxide, a form your body absorbs poorly compared to alternatives like picolinate or bisglycinate. At 25mg, the dose is solid on paper, but the oxide form means you're likely absorbing only a fraction.

One practical note: your body absorbs calcium less efficiently above 500mg per dose. Since this delivers 667mg in a single two-softgel serving, splitting the dose — one softgel with breakfast, one with dinner — would help you absorb more of what you're paying for.