I have seen that most of the supplements that has Pepform leucine dose it as 100 mg per serving.
I don't know about select

And if you go search a full tub of pure Pepform leucin... man it is really expensive.
But to be honest I tend not to trust Glanbia for extracting it out of whey... What does they do with the whey they got lift after extracting the leucine peptide :-S ? Sell it ? extract more out of it ?
I don't know...