You can give your baby teething biscuits when their teeth begin to bud. This usually occurs between the ages of 4 to 12 months, and most infants begin teething around 6 months of age. Teething can cause significant discomfort for babies and is typically characterized by a lot of drooling, more irritability, sore gums, red gums, rosy cheeks, a runny nose, or even a mild fever. I recommend waiting to use teething biscuits until your baby is at least 6 months old and has started solids.