Why can Amway Cuilan calcium magnesium tablets have a shelf life of 36 months without preservatives?

Contains unique nutrilite alfalfa essence, provides natural minerals and contains precious plant nutrition.

Each tablet provides 2 16.7 mg of calcium and 108.3 mg of magnesium.

The outer layer is covered with NUTRILOCK tablets to avoid nutrient loss and is easy to swallow.

No artificial flavors, synthetic pigments or preservatives are added.