Yes, in principle, both are possible, provided the food isn’t hot. Since these are live microorganisms, the drops should only be added to milk or baby food that has already been cooled to drinking temperature (maximum 37 °C/lukewarm). Higher temperatures reduce the viability of the bacteria. This principle generally applies to probiotics. The preferred method of administration is therefore undiluted. For example, the drops can be administered directly into the mouth, onto a spoon, onto the nipple while breastfeeding, or onto a pacifier.