Now Calcium Hydroxyapatite, 120caps

Microcrystalline hydroxyapatite (MH) is a calcium supplement with superior absorption, compared to other calcium supplements, and is named so because of its high concentration of hydroxyl ions. Hydroxyapatite is the main component of tooth enamel. NOW's CalciumHydroxyapatite is a second generation calcium supplement derived from bovine bone.

The microcrystalline calcium hydroxyapatite (MCHA or MCHC) used in NOW Foods products is sourced from New Zealand cattle and has been tested to ensure it is free of heavy metals.

According to the Weston A. Foundation (a non-profit, charitable foundation founded in 1999 to disseminate nutrition research), the most effective calcium hydroxyapatite is microcrystalline collagen hydroxyapatite - also called MCH - and is also extracted from bone free range cattle in New Zealand. These cows are fed naturally and are not burdened with antibiotics, pesticides, hormones or other toxic chemicals. To preserve nutrients and minerals, bone extract must be processed at very low temperatures.

This type of calcium is significantly more usable by the body as it is easier to absorb. NOW Calcium Hydroxyapatite Caps is a by-product of the food industry.