Atrovent is a prescribed medication to treat runny nose caused by a cold or allergies. As with any medicine, there are possible unpleasant side effects. It may interact other medications and be harmful to your existing medical conditions. There are several effective holistic/natural ways to treat runny nose which include nasal flushing using a neti pot (I am a big fan of this technique), acupuncture, acupressure, and homeopathic nasal gel called Zicam. Click on Home Remedies I on this site to learn other ways to deal with your symptoms. Some methods with regular practice offer quick relief while others might take longer as the root causes are addressed and healed.