Plot hole? Somebody helps me.

So I finished season 2 and a i can’t find a good answer to this. The pact forbids elevators and magnification instruments. I have a problem with the second rule. In the silo there are doctors, and these doctors use and prescribe drugs. At some point it seems to me that a doctor actually talks about aspirin. But it seems impossible to me that this society inside the Silo can make their own medicine and drugs without a microscope or any other instrument of magnification. The process just can’t work without them. Someone can tell me if there is a good explanation that I can’t see or if it is just an error in the world building of the series? Thankssss