as a pharmacist i am very hesitant to recommend anything for a child this young. many medications used to treat cough and cold symptoms are too strong for infants and we have to keep in mind that they are not "little adults. " i would need to discuss with you more about the actual symptoms – and in most cases my recommendations are nonmedication ones like running a vaporizer in the baby's bedroom and using saline drops and a nasal aspirator for a stuffy nose. talk to your pharmacist – they will be happy to help you.
what can you give a 4-month-old infant for colds and coughs?