... FormulaC15H9O5R1R2(Anthocyanidins) C27H31O16(Anthocyanin)Function (1) mproving night vision capability, protecting and regenerating retinal purple (rhodopsin), ... as retrana pigmentosa, retinitis, glaucoma, and myopia.(2) Eliminating free-radicals, protecting human body from harm ... pigmentosa, retinitis, glaucoma, and myopia.ohtersShelf Life: 2 yearsStorage: Store in cool and dry places, keep ...