All medicines are drugs but not all drugs are used as medicines. Why?​

Although all medicines are drugs, some drugs can't be used in medicines because it can kill you or pose a health risk. Medicines are chemicals or compounds used to cure, halt, or prevent disease; ease symptoms; or help in the diagnosis of illnesses. In this case, some drugs do the exact opposite: instead of curing it can kill or make your health condition worse.

Example: Cannabis/marijuana is a psychoactive drug. It can give several health risks, and it can make your mental health worse.

i think it's the first one because doctors aren't the ones who get rid of the old needles. most of them time it's not even doctors who give you shots, it's nurses.

yes. i think it is for sure.