If stuff like this already happens to the experts.

Keep in mind that almost all drugs are made in India. There is a huge issue with corporate corruption as well as poverty wages that prevent workers from ever whistleblowing. It’s a disastrous combination. It’s frankly a miracle that things don’t go wrong more often.

The corruption runs so deep that pharmaceutical factories keep exploding and wiping out whole towns every few years.

I would be at least a bit worried too, but unfortunately the only reason this exists is because corporations decided to wall off access to producing their drugs legally so they could continue to exploit vulnerable people for profit.

For a lot of the people using this tech, it's the only way they'll get life saving medication, and without it, they'll die. If that's the kind of gamble they have to make, a possible risk of impurities or negative reactions is better than the considerably less desirable option of death.