you should. there are indications and CONTRA-indications for using anything. even sugar and aspirin.
you should.
you could actually kill someone faster or cause a permanent disability in someone by "trying to help" using something you are NOT trained to use... you know, side effects? DO NOT TAKE IF______ type of stuff.
you should seriously read the labels on the common stuff like tylenol, asprin ect... without knowing someone's medical history, you'd actually be doing more harm than good.
here is my advice: stay in your lane.. watch your own six... don't be a cowboy / HSLD Operator.... it's okay "NOT" to do anything when you don't understand.