Lipo C is a scam. Lipo-c is basically an injectable carnitine, L-methionine and b vitamin supplement.
L-methionine is a sulphur containing essential amino acid. It is a very important amino acid to consume but you don't need to inject it. It is very wide spread in foods and you can get more then enough by eating a well balanced diet. Especially if you are eating a high protein diet.
Carnitine and b vitamins also have benefits but you don't need to inject them. They are 100% bioavailable when taken orally. Why put yourself through unnecessary injections?
If you are following a high protein diet, a L-methionine supplement isn't needed. If you want to supplement with carnitine and B-vitamins, just get a tablet supplement that you take orally. It'll be cheaper and just as effective.