If this had not been recommended by my primary care physician (who also used it), I never would have tried it. Still, I was a little skeptical especially since the order process felt a little 'gitchy' - upselling multiple items. Note for Prolon folks, you may want to review that.

The evening of the first day was the only time I had a headache, possibly due to lack of caffeine, so days 2-5, I drank a cup of coffee in the AM and after lunch and no more headaches. Each day, was easier - no strong hunger.

The biggest difference for me, was the lower energy level. I had to adjust my activities to accommodate the lower calorie intake. My results were similar to their average, losing 6.4lbs as measured from day 1 to the morning of day 6.

Overall, worthwhile. Not sure if I will need to do it again, as I did not have much more weight that I want to lose. However, should I lose my discipline, I would give it another go.