My wife & i shared a vanilla shake 4 days ago. After her first sip she said it tasted wierd & didn't drink anymore. I thought it tasted ok & drank half of it. 3 hours later symptoms hit. Naus, diarrhea, vomiting. Felt like our insides were coming out of us. Hers lasted 1 day. Mine is going on 4 days. Each day its getting better so i think its almost over.