It's not evidence of a cover-up, because there is no cover-up. Safety of medicines is very strictly monitored, and this goes for older drugs as well as new ones.
It's true that pharmaceutical companies have got away with very dodgy practices in decades gone by, resulting in real harm to lots of people, but the regulatory framework and monitoring in place now means that really isn't likely to happen these days. Pharmaceutical companies are far more likely to drop a promising new drug if the risk:benefit ratio looks like increasing beyond 'infinatesimal'.
(, Thu 9 Jun 2022, 8:58, Reply)