I have a PDF of an equivalency chart for amphetamines, but phentermine doesn't seem to be on there. I was kind of curious as to the conversion rate when going from 60 mg of Adderall to phentermine. It seems to me like it takes an awful lot of phentermine to equal just 30mg of Adderall. Just wondering if there is a mathematical conversion like there is for other amphetamines. I am really looking for solid info... aka, real data, but am willing to hear people's experiences that have taken both of there's no scientific data out there. Thanks.