I dont when I missed dristan sinus medication from bei.g on the shelves, but I did. It worked like a charm. Then one my sinuses were out of control like now, and dristan was gone. What happened, why was it taken off the ahelf ## Are you referring to Dristan Nasal Decongestant? If so, it's probably very likely that the store you've been going to just stopped ordering them for one reason or another; as you can find Dristan Nasal Decongestant all over the internet, on Amazon, Walgreens, etc. If a store does not have something in stock, you can generally ask them to fill an order for you to pick up at a later date. In the meantime however, Amazon would be a good place to start if you're anticipating that you'll need it sooner than later. I hope this helps!