Last night I took my very first 1/2 tsp. of GP Blue Ice Royal Butter/FCLO Cinnamon. Within 2-3 minutes I hit the floor with my heart pounding out of my chest, profuse sweating, nausea, dizziness, and lost bowel function. It lasted about a half hour. I really thought I was having a heart attack. I spoke with my functional medicine doctor this morning and he said I definitely had an allergic reaction. I will not be touching it ever again! It’s not worth that! It seems to be rare, but it does happen.