Before cycling, I ran. In the late 90's I went into GNC to ask about something to make me run better. They gave me 'Awesome Orange' or something with a name kinda like that. It was basically an ephendrine/caffeine mix. My loop that I ran by myself (i.e. no competition at all) was around 4 miles. Doing back to back tests, taking a dose of that drink was worth about a mile a minute. I did the test probably 10 times and it repeated over and over. It was unbelieveable. I felt like I was running with someone else's lungs.
Of course, then people started having heart attacks with that mix, so I put the ki-bosh on it. The last time I saw the carton of that stuff was during a move and it was still 1/2 full. I guess I threw it out, because I haven't seen it in forever.