Don't say that you failed! You do what you can, and now that you know, just don't buy them again! :) You're still a "good vegan." ;) As for what to do with the rest of the Centrum, I'd say if you like them, finish up this bottle (or give them to a friend who will use them) & buy something vegan next time. The damage has already been done, and it's not as if throwing them away will take back the purchase, you know?

I started a thread about people's favorite vegan multivitamins about a week ago, and the one I chose to go with is by a brand named Deva. Check it out on www.veganessentials.com. They have other brands, too, if you want to look at other options! (I don't know how I like it yet, as I have yet to order the Deva ones. I want to check my local stores first so I can avoid the shipping cost!)