Does this medicine have side effects (e.g. extreme tiredness and shaky feeling)? ## Hello, Ro! How are you? All medications carry the risk of causing side effects. The FDA classifies this medication as an antibiotic and you may also experience nausea and diarrhea. If it continues once you finish it, or gets worse, then you should consult your doctor. Is there anything else I can help with?

I would like to know if there are any studies done on this drug. ## Unfortunately I was unble to find any drug study on Dura-Vent DA, I did however find the active ingredients which are Chlorpheniramine + Methscopolamine + Phenylephrine. These three drugs combined are used to treat chest congestion, sneezing, runny nose, and itchy, watery eyes due to common colds, or allergies. Do you have any more questions or information to add? Please post back if you do. ## DRUG STUDY OF DUAVENT