Vitamine ni ibintu by'ingenzi mu kubungabunga ubuzima n'ubuzima.Nibintu byingenzi kubwa imbwa kubungabunga ubuzima, gukura no gutera imbere, gukomeza imirimo isanzwe ya physiologique na metabolism.Vitamine ntabwo ari ingenzi cyane mu mirire y’imbwa kuruta poroteyine, ibinure, karubone ndetse n’imyunyu ngugu.Nubwo vitamine atari isoko yingufu cyangwa ibintu byingenzi bigize ingirangingo z'umubiri, uruhare rwabo ruri mumiterere yabyo cyane.Vitamine zimwe zubaka uduce twa enzymes;abandi nka thiamine, riboflavin, na niacin bakora coenzymes hamwe nabandi.Iyi misemburo na coenzymes bigira uruhare mubikorwa bya chimique muburyo butandukanye bwo guhinduranya imbwa.Kubwibyo, igira uruhare runini muri metabolism ya proteyine, amavuta, karubone, imyunyu ngugu nibindi bintu mumubiri.