Bests & Worsts Reviews from Amazon

I'm a 50 year old male and was looking for something that could give me energy without heavy caffeine, increased focus would be a plus. The first time I took the product I only took one pill, after small breakfast (Recommended dosage is two pills a day). In about 20 minutes I did feel more energy, focus, and I felt stronger! I did not feel nauseous like some other had reported, so an hour later I took the second pill. I did not notice an increase or feel any different, but I did start to feel like I had too much caffeine. I started to get a headache (I never get headaches). So the next day I only took one pill, but this time I felt nothing, no increase in energy or focus. I was getting a headache again. I decided to take two days off and give it one more try. Two days later, one pill, nothing, no feeling of more energy, it just made me not feel well. It never gave me the same feeling like it did the first time I took it, it just made me not feel well.