Guys . IF you inject into a vein it will be like Mustang said. My friend never used to asparate and injected liquid anadrol(which i swater based) into a vein. He said he tasted metal in the back of his mouth ran to the bathroom splashed water on his face. He then ran back to his room and fell to the floor and couldnt move. He managed to get to the phone though and called a good friend who came over to help him and told him to take lots of asprin to thin his blood. He said his hands and feet then curled up and he jsut layed there for a long time sweeting real bad and his whole leg turned black. He layed there for a few hours before he was able to move around again.
So make sure you always asparate.
Now there is a difference between hitting a vein and injecting into one. YOu may hit a vein and the needle goes right through you asparate , its fine, and inject into muscle. This is why sometimes youl get lots of bleeding when you pull the needle out.