Collagen is a protein found in connective tissues of the body. It is significant in making certain parts of the body such as nails strong and is also an important factor in joint health. Collagen supplements come in various forms.
Calcium supplements are available throughout the United States and Canada in different forms. There are four types of calcium supplements available for purchase. The most frequently used and effective calcium supplements are calcium carbonate and calcium citrate. The other two, calcium gluconate and calcium lactate, contain less elemental calcium are not as readily available as the other types.
The most common types of magnesium used in supplements include: 1  magnesium oxide, which can contain high levels of magnesium and is often used to treat migraines. 2  magnesium sulfate, which is an inorganic form of magnesium, and only small amounts of the supplement can be absorbed into the body. magnesium carbonate, which has slightly higher levels of magnesium and is more likely to cause gastrointestinal upset. magnesium chloride, which is easily absorbed into the body. magnesium citrate, of which large amounts can be absorbed into the body; it is often used to induce bowel movements.