Read more Doppelherz System MULTI-VITAMINE Family Doppelherz’s liquid system, the MULTI-VITAMIN family delivers selected vitamins, as well as extra magnesium with just one sip – and it tastes so delicious with so much fruit, it tastes big and small with a sweet tooth! It can help both children and adults who have problems taking capsules to support their daily supply of nutrients – without taking capsules.