All of these questions are far too broad. The chicken question names certain medications (which is positive regarding the broadness). But, what's next?
Can I give human medicine to my snail?
Can I give human medicine to my fish?
Can I give human medicine to my rats?
Can I give human medicine to my mice?
Can I give human medicine to my ferret?
Can I give human medicine to my donkey?
Can I give human medicine to my horse?
The answer to all these questions is somewhat the same (it always boils down to consult your vet). We should question if we really want these questions on our site as we are unable to give expert advice other than "consult your vet".
All these questions lack certain crucial point, they don't state a problem we can solve, just a theoretical question. "Questions should be based on actual problems that you face".
To answer all the questions above we only need one question:
"Can I give human medicine to my pet?".
This question might look like it is too broad, as the only answer can possible be "consult your vet" with maybe some added examples how different medication has a different effect on different pets compared to humans. Still I think it is better having one too broad question which we can use to close all other questions as duplicates of, than to have all those far too broad questions I posted above.
I propose to make the question Community Wiki with the following title and text:
Can I give my pet human medicine?
Is it safe to use human medicine on my pet?
Does medicine have the same effect on pets as it has on humans?
How much medicine should I give to the pet, do the guidelines for humans translate to my pet (eg: if the dosage refers to the body weight)
My veterinarian prescribed my pet some medicine, it is medicine for humans, is it safe to give this medicine to my pet?