| Vitamin D3 | Cholecalciferol, the form of vitamin D produced in skin under sunlight and commonly added to supplements. |
| Collagen tripeptide | Collagen broken down into three-amino-acid fragments; the tripeptide form is used in supplements for its small molecular size. |
| Collagen dipeptide | Collagen broken down into two-amino-acid fragments; collagen peptides are commonly made from fish, bovine or porcine collagen. |
| Lutein | A carotenoid found in leafy greens and egg yolk. It accumulates in the macula of the eye and is widely studied for its role in filtering blue light. |
| MCT powder | Medium-chain triglycerides, fats derived from coconut or palm kernel oil, spray-dried into a powder that is used in foods and supplements. |
| Glutathione | A tripeptide made of three amino acids that occurs naturally in every cell of the body; it is also produced by fermentation for use in supplements and cosmetics. |
