The use of calcium citrate and magnesium citrate are strong points for bioavailability. However, the inclusion of magnesium oxide and Vitamin D2 (less potent than D3) slightly moderates the overall nutrient quality. The name/ratio contradiction is also a quality concern.
Solaray's Cal-Mag supplement delivers a substantial 1000mg of calcium from calcium citrate, a highly bioavailable form known for its efficient absorption and gentleness on the digestive system. This form is often preferred for effective calcium supplementation to support bone density and various bodily functions.
The product also provides a robust 1000mg of magnesium from a blend of magnesium citrate and magnesium oxide. While magnesium citrate offers good bioavailability, magnesium oxide contributes a high elemental content. The inclusion of 10mcg (400 IU) of Vitamin D (D2, Ergocalciferol) further supports calcium absorption, making this a comprehensive mineral formulation. Notably, despite the product name, the ingredient list suggests a 1:1 calcium to magnesium ratio.
- Provides high doses of calcium (1000mg) and magnesium (1000mg).
- Uses highly bioavailable calcium citrate and magnesium citrate.
- Competitive price per serving.
- Very high customer review count, indicating widespread satisfaction.
- Suitable for vegetarians/vegans (VegCap form).
- Includes Vitamin D2 (Ergocalciferol), which is generally considered less potent than D3 (Cholecalciferol).
- Magnesium oxide in the blend has lower bioavailability compared to magnesium citrate.
- The product name '2:1 Ratio' contradicts the actual 1:1 calcium to magnesium ratio in the ingredients list.
- Requires 6 capsules per serving, which can be a lot.
- Due to the high mineral content, ensure adequate fluid intake.
- High magnesium intake, especially from magnesium oxide, may cause a laxative effect in some individuals.
- Individuals should be aware that the product name implies a different ratio than the listed ingredients.
- Consult a healthcare professional, especially if taking other Vitamin D supplements or medications.

