This morning I took my Prozac capsule. About 10 or 15 minutes later, I started feeling some discomfort in the back of my throat, so I coughed. A plume of white powder came out of my mouth and I was like what the heck? Then my throat started seriously burning. I'm guessing the capsule didn't go all the way down, even though I couldn't feel it, and once the capsule dissolved the drug inside released. I'm guessing it's acidic. My throat still hurts a little. Lesson learned: it takes more than a sip of water to get this pill where it's supposed to be.