Babies can have yogurt as early as 6 months of age as a part of a balanced diet of solids. If the baby shows signs of food allergies or has an allergy-related condition such as eczema, consult with the baby's doctor prior to introducing yogurt. Only use plain, unsweetened yogurt.
When adding any food, including yogurt, wait 3 days before adding an additional food to check for allergy. A rash around the mouth or dietary upset may signal an allergy to the yogurt. Consulting with a doctor if the baby develops these symptoms is wise. Never add honey to yogurt for a baby under age 1.