Everyone's body is different and what works for me might not work for you. With that being said, I have to be honest these pills are legit for me. I took 2 pills in the morning around 7am and still had tons of energy at 8pm. I'm a medical school student in my rotations and always felt drained by the end of the day...not anymore! I don't crash mid day like i do when I have my morning coffee. I feel awake but not jittery. No palpitations and no insomnia. Definitely my go to pill for energy. My only hope is that my body doesn't desensitize to the pills. Its been awesome so far. Worth a try especially because all the ingredients are safe.