I was sitting here reading these reviews about how it doesn't work, how y'all took there money, etc. I'm here to say that these individuals are full of *** It took about 2 weeks, (because guess what fellas! It's not a miracle drug) it has to get in your system! But in 2 weeks my husband says he has an endless amount of energy, sleeps better at night, and is feeling like his old self again. He's 53 yrs old and has worked construction his entire adult and teenage life. He pushes his body to the limit daily. That's why I wanted him to try this in the first place. Because I saw how hard it was to keep up with all the young guys at work. Thank you so much Nugenix! This is an Amazing product!!!