From 2014:
We now know the government's Tamiflu stockpile wouldn't have done us much good in the event of a flu epidemic. But the secrecy surrounding clinical trials means there's a lot we don't know about other medicines we take.
Sounds familiar:
So does Tamiflu work? From the Cochrane analysis – fully public – Tamiflu does not reduce the number of hospitalisations. There wasn't enough data to see if it reduces the number of deaths. It does reduce the number of self-reported, unverified cases of pneumonia, but when you look at the five trials with a detailed diagnostic form for pneumonia, there is no significant benefit. It might help prevent flu symptoms, but not asymptomatic spread, and the evidence here is mixed.
Rhinoviri are tricky creatures.