The card only says that OstroVit Choline + Inositol is a food supplement containing two compounds: choline and inositol. A serving (1 tablet) contains choline (as bitartrate) — 300 mg and myo-inositol — 300 mg. The card does not explain how these substances differ, why they are combined or what effect is claimed; it makes no claims about effects on the body.
General information (not a manufacturer's claim): choline and inositol are different substances; this is a food supplement, not a medicine, it does not replace a complete diet and is not intended for the treatment or prevention of diseases.