Given what I’ve read about drug testing and the medical field, I doubt one in 50 drugs actually do anything other than exhibit the placebo effect.

Drugs are tested by the people who manufacture them, in poorly designed trials, on hopelessly small numbers of weird, unrepresentative patients, and analysed using techniques that are flawed by design, in such a way that they exaggerate the benefits of treatments.

No way to solve this really with business astride the world, never to be dethroned. Good to know anyway, though, as the placebo effect still works even if you know about it.