More power and burn fat yes, but bad reactions from my body !!!

I'm doing now for about 2 years weight training and aerobic exercise. My goal was to reduce my body fat percentage faster with this agent. In the first 2-3 revenues it was a stunner. Extreme performance, and endurance increase. But: My body has responded very poorly to this stuff! Rash on the stomach, and generally there on the upper body where fat is present. In the worst case, this rash has developed into pimples! The metabolism is stimulated as well, but once you settle it, one has the feeling that he then takes place more slowly as before. And at last the worst for me: My eyes have shown a kind of allergic reaction. Hab slightly red eyes and my eyesight has diminished! Now I have not taken this means for 3 weeks, and this rash and the poorer eyesight is still available! It does not mean that every body in this way react, but I finds horrible how my body responded. Unfortunately, I still do not know what I mean problems caused by the stuff again can undo. As soon as possible I'll need to see a doctor.
Enjoying stuff with caution!
L-carnitine has no side effects (According to various articles on the Internet), but there are still many other means available in the stuff!
Oh PS: There are with me so far no known allergies! ...

/// Another addendum, though I would like to quote an article from the Internet:
"L-carnitine is not equal to L-carnitine

L-carnitine can be prepared in various ways.
Clean chemically produced L-Carnilin contains as an impurity always the unnatural DCarnitin.
D-carnitine is harmful to our bodies and causes side effects. L-carnitine,
which is produced biologically by the L-Camipure process, contains absolutely no unnatural D-Carnitine.
L-Carnipure L-carnitine is produced enzymatically from natural microorganisms Ackerboden-
similarly as in the production of yogurt or cheese. Therefore, make sure the purchase of L-carnitine products on the
L-Carnipure quality seal on the product label, which guarantees 100% pure, nature-identical L-carnitine. "

This product is nowhere to be seen a bit of biological production, so I advise everyone to use only those products to go side-effects of the way !!!

An example would be the product of "Best Body Nutrition" (here on Amazon).

Regards