What effects do common Terran medical drugs, such as asprin, have on Cyantians?
It would depend on the drugs. Not all of the drugs made on Earth exist on Cyantia and neither do the materials they are made from. Common household drugs like aspirin could have worse effects on a Cyantian than a human because of their concentration. Cyantians are relatively healthy and don’t take a lot of medicines for their problems unless they have really serious ones and they aren’t in nearly the same strength. For most drugs, just imagine that the recommended dosage would be equivalent to the overdosing amount in a Cyantian. They’ll get sicker quicker on too much sugar and alcohol as well.