I am not new to healthy living nor to juicing fruits and vegetables, but I have just recently purchased the NutriBullet RX and find it very easy to use and very easy to keep clean. I made my first "green drink," to detox, and that evening when I went to bed I felt so calm, almost lifeless (after taking my night-time meds) that it scared me. I felt as if I would not wake up if I fell asleep. I have AtrialFibrillation and take Cardizem 240 for this. Have any of you experienced anything like this? I notice the warning to ask your doctor if you have health issues or take any prescriptions. Anyway, this is my concern, and would appreciate any feedback, as I really want to get started eating a healthier diet.