This was a great addition to my diet and workout routine. As far as the chitosan... im not a believer, but the amount of caffeine is incredible. There is a few forms of caffeine so the actual "anhydrous caffeine" section under the nutrition facts is not an accurate source of info. Since this is a supplement, it is not regulated by the FDA therefore this misnomer is allowed.anhydrous caffeine is pretty much legalized meth style caffeine.... experienced side effects? duhhhh... the explosive energy and death defying heart rate is why you get the energy and lose the weight..so... i give this 5 stars... im not ignorant like the rest of the low star reviews and know what to expect. people that are 300 pounds of fat and take 10 per day are just asking for trouble so weed out their reviews.. if you eat right, exercise, diet properly, and take this you will give it a 5 star too.

I dont recommend using this product.It is not effective for weight loss.I suspect the increased heart rate and blood pressure after taking this product is quite dangerous!

I took these once a day for five days with meals. On the fifth day I started experiencing serious side effects like dizzyness, numbness in my fingers, and rapid heartbeat. These side effects lasted for almost THREE DAYS after taking it. I felt like I was going to have a stroke or a heart attack. This product is not approved by the FDA, so use it at your own risk!

the pills really do work. I stopped taking stacker over a year ago and i stopped my routine workouts and i gained 40 lbs in just one year! I was so frustrated and dissapointed at myself so i started going to the gym but i was finding it hard to motivate myself to do anything while at the gym. I just started taking stacker3 for one week and already i have dropped almost 10 lbs (of course with excersise as well) This pill not only helps with energy but as i have read, it also works as a metabolism enhancing property! Thank you NVE for a great product. THe only negative thing about it is that i sometimes feel dizzy and a numbness to my fingers. (that was the reason i stopped taking it in the first place but its really not life threatening or as serious as it may sound)

Now I try to limit my caffeine intake to the bare minimum, like in tea. I do not drink coffee. So when I took Stacker 3 (just ONE PILL) I was jittery and could not fall asleep. I stayed wide awake the whole night and through the day. I felt nauseus too. Now this was probably because I don't drink coffee or anything that has a lot of caffeine in it, but I don't recommend Stacker 3 anyway.

hi, i use stacker 3 since 2 months less or more, they ho relly nice their job, i go gym at 7 am so i wake up like 6 am so i take one capsule since i wake up, then i take a light breakfast, i take another capsule after the lunch, it work very good i really recomend this product, never you gone to see result fast, but with this one plus excersice it will be.