Criteria for evaluating mineral forms

Minerals in supplements do not exist in free form. They are always bound to a carrier. Zinc bisglycinate binds the zinc atom to two glycine molecules. This bond forms a neutral complex. The body recognizes it as a dipeptide and absorbs it through amino acid receptors in the small intestine. Similarly, magnesium malate binds magnesium to malic acid, an organic compound involved in cellular energy production.

Key label specifications

Always verify the chemical identity of the formulation before selecting.

• Chelated compound: Choose organic compounds such as bisglycinate or malate forms. Their absorption remains steady regardless of stomach acidity levels.
• Elemental yield: Check the net amount of mineral per dose. Zinc bisglycinate yields approximately 20% elemental zinc by weight.
• Capsule shell: Opt for plant cellulose (HPMC). It dissolves faster in the stomach without added fillers or animal-derived gelatin.

Common selection errors

Zinc oxide and magnesium oxide are low-cost inorganic salts. They show poor absorption in the human body. Most of the dose remains in the gut and causes nausea, cramps, or diarrhea. Inexpensive multivitamins use oxides to reduce tablet bulk.

Practical use

Take capsules with water after a meal. Avoid combining them with foods high in phytic acid, such as whole grains, as they bind minerals in the intestinal tract.