We are very strongly advised against medications here too.

The last three times I re-certified for my first aid tickets the only two medications they suggested were sugar if you were dealing with a diabetic starting to have seizures, and aspirin for heart problems (chest pains).
With both of these the drug does no harm if they don't need it and does good if they do need it.

We are severely warned against doing anything invasive like cutting into their airway to insert a tube. You are not a surgeon so don't do it.
The same thing goes for amateur IV.

Even the plastic airways that you put in from the mouth require special training.
It is easy to put them in wrong and open a way into their stomach instead of their lungs.

We are not even supposed to give a person medications that they have with them.
Not even nitroglycerin heart pills or hitting them with an EpiPen if they are having an allergy problem.

We are able to help them take them but not to administer them ourselves.