Take the money earmarked for the pills and set it on fire. That would be more effective for penis growth than ordering a magic potion off the net.
If penis enlargement were as easy as popping a pill and doing nothing else, half the guys on earth would be walking around with a foot long cock swaying between their legs.
If you are serious about getting bigger read up on jelqing and stretching. Do it constantly over time and you'll see results.