I use DUONEB as maintenance for COPD and XOPENEX for my emergency inhaler. I get my prescriptions from the VA. A few days ago i called the VA pharmacy to ask them where my monthly supply of DUONEB was. Pharmacist told me there is a suppy problem and that I would be receiving Albuterol sulfate and Ipratropium bromide separately.. I'm not quite sure how to self administer the two liquids. Pouring the contents of two vials into a nebulizer cup just doesn't seem right;. VA hasn't been much help.