perhaps its like the biotest T2-pro formula:
3,5-diiodo-L-Tyrosine 100mg
3-iodo-L-Tyrosine 100mg
Coleus Forskohlii (20%) 75mg
sort of a Thyroid precursor formula. why do they not list the ingredients? i'd email them if i were you to find out. i am tapering off the stuff myself and don't intend to use it for a long while myself. may work in this Biotest T2-Pro somewhere though soon.