I recently sampled Serenity “Relaxation in a can.” I was very pleasantly surprised. Serenity is lightly carbonated with a vanilla cream flavor. I really enjoyed this product. I found the taste crisp, refreshing and relaxing. Zero calories, carbs and no sugar. I have trouble winding down after my day. I look forward to this beverage before bedtime. A couple of the ingredients in the can are melatonin and rose hips extract. As an avid consumer and product tester, I will purchase this product again. I love this product!