I try to remember to take this every morning during breakfast. It's definitely chalky as others have mentioned, but I always drink a lot of water afterwards. The cherry flavor isn't bad. It almost reminds me of Tums or Rolaids. I notice a difference in my engery levels within 30 minutes to an hour. PLEASE make sure you DO NOT take more than what's recommended. Your heart will literally beat out of your chest. So scary honestly! Learned the hard way and had to rest for the remainder of the day to keep my heart rate down. I have chronic fatigue from Fibromyalgia, so literally EVERYTHING is a chore to do. The B12's aren't a cure, but they help me get through the day for the most part. I don't have the energy I'd like, even after taking these. But every little bit helps somewhat.