Not yet investigated
What we have so far
Black's idea was to block the receptor rather than the hormone, and it won a Nobel. They are banned in archery and shooting, which is the clearest thing anyone has said about performance anxiety.
This star is on the map because the show intends to take the question apart properly — the trials, how it is actually tested, whether the thing sold is the thing studied. That work is not done yet, and nothing here should be read as a conclusion. When the investigation is published it will appear on this page.