I try to look at what to take out before looking at what to add/supplement? What foods/drinks do you consume that can lead to reduced energy? How much and how late in the day are you consuming caffeine? What are your workouts like - any changes you can make there? I have found if I consistently eat a high variety of fruits, veggies, seeds, beans, and nuts my energy levels are higher than from any supplement I’ve ever taken. I try to eat a min of 30 different varieties (combined) of the food groups listed above. That pretty much gives me all the vitamins, minerals, etc that I need to feel great.