My doctor told me I don’t have to take it everyday anymore and I’m like what? So to awaken and mess up my metabolism and steady my heart rate every once in a while I go a day without and just have a no calorie energy drink in the morning instead.one day is the longest I can go without any withdrawal side effects which aren’t that bad. Sometimes I will go without on the weekends. But this is all because I’m not in school or working or have anything to focus on