I'm very satisfied with the results of taking NAD+ - it's truly a powerful and effective product. I recently returned to live in Ukraine, and due to constant air raid alerts at night, it's been nearly impossible to get proper sleep. Before starting NAD+, I didn't even have the energy to function, let alone engage in any physical activity. Now I have so much energy that I can easily go for my usual 5 km morning run and still have the strength to work productively throughout the entire day. I've also noticed that my skin looks healthier and more radiant. My metabolism has clearly improved - after exercising, it's become much easier to lose weight than it used to be. Highly recommend!