Anyone have info on "ASO"

[dogy]

A friend of mine says he is on 50mg per day of ASO which I have not heard of before. (hopefully I understood him correctly) The bottle it comes in is spanish which I unfortunately can't read.

Can anyone out there direct me to more info on this or at least provide me the full name so I can try to research it myself? He just says it is a very mild version of what the hard core guys use which doesn't tell me a lot.

Thanks