Betadex is a nonreducing cyclic compound composed of seven alpha-(1-4) linked D-glucopyranosyl units. It is a pharmacologically inactive substance. Betadex is useful for stabilizing, solubilizing or delivering intermediate size molecules. Cyclodextrins are cyclic oligosaccharides that have been used to modulate the composition of cholesterol and other lipids in biological membranes and have also been used as pharmaceutical excipients in the formulation of hydrophobic drugs. More recently, 2-Hydroxypropyl-β-cyclodextrins (HPβCDs) have gained attention as a potential therapeutic intervention for Niemann-Pick Disease Type C1 (NPC1) disease. HPβCDs are complex mixtures of different species, and variations in production may lead to differences in composition. 2-Hydroxypropyl-β-cyclodextrin dose-dependent effects against dysfunctional intracellular cholesterol trafficking in NPC1 cells.

Zeaxanthin is one of the most common carotenoid alcohols found in nature. It is synthesized in plants and some micro-organisms. Lutein and Zeaxanthin are found in the macula of the human retina, as well as the human crystalline lens. They play a role in protection against age-related macular degeneration (ARMD) and cataract formation. The antioxidant properties of lutein and zeaxanthin together with ocular antioxidants (selenium, zinc, copper, vitamin A, C, E, etc.) inhibit free radical damage caused by light and oxygen. Zeaxanthin supplements are typically taken on the supposition of supporting eye health. It is is Generally Recognized As Safe by FDA.