Lyman Good was suspended for six months back in late 2016 after testing positive for the anabolic androgenic steroid 1-androstenedione (1-andro) and its metabolite, which was allegedly caused by a tainted Gaspari Nutrition supplement called Anavite.
The supplement Good took, which did not list 1-androstenedione on the label, was confirmed as containing a banned substance by USADA. USADA also tested an unopened batch of the supplement to verify the contamination. Independent testing by LGC Science, Inc, also confirmed the presence of 1-andro.
Like many fighters in this situation, Good maintained his innocence, and there was talk of taking action against the supplement manufacturer.