Hi...there is no specific reason why some kids throw up some specific formula feeds. But if your kid is growing well on breast feeds, as it is 6 months now, I suggest, you continue breast feeds for milk requirement and start solid feeds like rice based feeds. Other home-made food options will be - 1. Daal and rice well cooked and made into a porridge along with ghee 2. Boiled apple or banana and mashed into a paste. 3. Any made cereal porridge preparation with additional ghee added. Remember certain principles like - 1. Add one food material / cereal or fruit per week. This will be useful because if he develops vomiting or diarrhoea, we will know what to avoid. 2. Add vegetables and fruits made into a paste surely to avoid constipation. 3. Do not add too much sugar as it may cause diarrhoea. Regards - Dr. Sumanth