The AM is great when I first get up without the shakes or withdrawal that caffeine products give. I found out the PM works best if you take it after you have relaxed for a little bit and right after you drink you will be tired in 20 minutes. I don't have to sleep as much and feel more rested on this product. I personally feel it is the best supplement that I have ever taken.
I just got done ordering my 3rd box of this stuff. I have 2 weeks left of my current supply, and I DO NOT want to run out. I'm going to try Grape this time, only because the Fruit Punch (my usual) is sold out. I've lost 16 lbs. in 6 weeks taking this stuff. It's awesome. The first 2 weeks were disappointing though. I recommend visiting the manufacturers website and reading their guide for usage.
I have used this product off and on since 2008 when I did my first Ironman Triathlon. Helps me get up in the morning and have some good sound sleep at night. It's ideal for a monthly rotating day and night shift. The fat pounds come off, the energy and libido levels go up. I like the Orange flavor best. After a few months the results slow down as my body gets used to it. I hibernate without it in the winter months and start back with it in the spring.
I've been using this product for about 3 years and have noticed a difference in my body fat and metabolism. I'm 42 and might be in the best shape of my life right now. I still body build regularly, and engage in regular cardio exercise like running. Frankly, it doesn't hurt your libido, either. The AM formula is particularly good, as it wakes you up right away and gets you ready for a morning workout. Just don't take any other stimulants at the same time, as that can be a bit much. Take it regularly, and stick with it. It's super easy to take. It works well with protein and other supplements.
I'm surprised Muscle and Fitness and other magazines haven't touted this product a bit more, but maybe it just works better for my system than it does some other folks. I'd definitely recommend giving it a shot and see if you notice a difference in a month or two. I hate the expense, but it works so well I try to bite the bullet each month.
The fruit punch is the best, in my opinion. Grape isn't bad, but for some strange reason, it doesn't mix as well with water. I didn't care for the other two flavors.