Hello doctor, i have a 2 year old daughter..who got this cough and vomiting problem since she was 6 months old. Doctors say she is allergic to some environmental thing. But i have been unable to understand what exactly causes her to cough and throw up severly. She gets this sickness after every month or so and it lasts for 5-7 days. Most of the doctors have had advised an anti-allergy along with nebulizers. My concern is whether its okay to give her anti-allergy medicine and nebulizer this often (like after every two months or so) ?? What are the side effects? Because i don t want to put her medication as early as this (she just turned 2 now). I ll look forward and appreciate your detailed answer. Thanks in advance!! A worried mom!