Hi, I had gone through your question and understand your concerns. Using 2 ml ipravent instead of 1 ml is not going to cause any major side effects except some irritability and sometimes tremors . Wheezing due to bronchiolitis usually responds poorly to nebulisation , it usually takes 5-7 days to resolve but you need to be alert as symptoms may worsen very rapidly sometimes . Keep a watch on respiratory distress , oral acceptance and activity of child . Take care of hydration by frequent feeding . Hope this answers your question. If you have additional questions then please do not hesitate in writing to us. Take care. • DISCLAIMER: - All the information provided here is for information purpose only , it is not a substitute for the advice of a physician after physical examination , it is not intended to replace your relationship with your doctor. This information in no way establishes a doctor-patient relationship. Before acting anything based on this information do consult your doctor. I recommend that online users seek the advice of a physician who can perform an in-person physical examination