Bests & Worsts Reviews from Amazon

I was looking for something that would help me focus and I saw that this had some pretty decent reviews. I ordered and I took for for almost two weeks. It was the worst two weeks I've had in a long time. Constant headaches and migraines. I only get migraines every so often but this gave me two migraines in the two weeks that I took the product. I threw it out and decided it wasn't for me. I wouldn't recommend this at all.