That big, if your heart can handle it, I would imagine prescription meth would be a lay up. Ever tried it? I had a diet pill once, fucking Dr. always hit me w/ shit that was $120+ a script. I never got the headaches, but it would make me irritable. Also, if you don't take them very early in the morning, you'll still be tossing and turning at 4AM.

A successful cop to ADHD, would provide Adderall that would suppress your appetite and raise your metabolism. As I said though, I don't know how your heart is, and you would have to be careful to monitor your heart rate during work outs, so the speed doesn't push you too far. Easy to regulate your dosage w/ that stuff, as you can crush em up and just snort half. It is sweet like a pixie stick to make the lil kids hooked quicker.