This could be due to cow's milk. You may need to go back to his original formula for a while. See that he takes enough fluid and gets fibre and fruit in his diet.
The information provided does not constitute a diagnosis of your condition. You should consult a medical practitioner or other appropriate health care professional for a physical exmanication, diagnosis and formal
advice. Health24 and the expert accept no responsibility or liability for any damage or personal harm you may suffer resulting from making use of this content.