Hmmm, nothing from my side. I have used a lot of brands including almost full ranges from USN, SSN, Biogen, Gaspari Nutrition and I had no side effects. Except from feeling a bit nausious from the stimulats in the first couple of Creapump (SSN) and phedracut slimpacks (USN) usages but soon thereafter it was back to normal.
obsession is a word used by the lazy to describe dedication
We are what we repeatedly do. Excellence then is not an act but a habit - Aristotle