My 2.5year old son is having dry cough since two weeks. He also suffered with fever and cold in the last week but they subsided. For the last two times when he had cough, doctor has prescribed 'Ascoril medication'. But my son used to vomit food along with medicine whenever the medicine is given. So, as of now I am giving him ajwain (carom seed) water. He is getting slight relief but the cough us still there and gets aggravated in the night. Please help us.