**Magnesium** at 250mg per tablet lands within the clinical supplemental range of 100–400mg — but the form is magnesium oxide, which has roughly 4% absorption. That means your body is likely taking in only about 10mg of usable magnesium from each serving, well below what you'd need for meaningful support with sleep, stress, or muscle recovery.

The tablet also includes 65mg of **Calcium** as calcium carbonate, but that's a fraction of the 200–600mg supplemental range and won't move the needle for bone support. There are no complementary nutrients like vitamin D or K2 to enhance absorption of either mineral.

If you're supplementing magnesium for a specific health goal, the oxide form is the biggest limitation here. You'd absorb substantially more from a glycinate, citrate, or threonate form at the same dose — and those forms are also gentler on the stomach.