Yes, Heroin was used in the UK and the Netherlands as pain relief, it was used after surgery pain relief and also in other pain medications. I'm not sure if it is still used though, I think they now use morphine as an alternative.
Not a lot of very SAFE ones. There were some "patent" drugs that weren't necessarily worth much, plus drugs that are illegal now because they are dangerous were legal then, and were in common medicines given even to young children.
there are the illegal drugs like cocaine, heroin, marijuana and meth and the legal ones that need medical prescription as xanax, percocet, and the such.
That depends some drugs are legal and some aren't like coccaine that's illegal
There are several life saving drugs in the world. Some of the drugs are antibiotics, chemo drugs, and pain medicines.
steroids aren't illegal if they are prescribed to you. they are illegal if they weren't issued to you, or if you abuse them
A drug is generally defined as a chemical that can affect living processes. All medicines, except perhaps metaphorical ones like "laughter," are drugs. If by drugs you mean "things I can use to feel good illicitly" then I guess it depends how dumb you are. Do you huff glue? Cleansers? Assuming you are only average dumb, then you probably only take the usual drugs. I think almost all of these have been used as medicines by some people in some places at some times. Once they become Class I controlled substances in the US, they have been determined by the FDA and DEA to have no medical use that outweighs the risk of abuse posed, so they are unlikely to be used as medicines in the US if they are Class I. (But marijuana is legal in some states for medical purposes, and heroin is still used medically in Europe, so even Class I drugs can be medicines.) And many people abuse medicines such as Oxycontin, making the question: which medicines are used as drugs. Short answer: "drugs" and medicines are often the same things used in different legal and social contexts.
It depends on the drugs. Most illegal drugs are illegal because they're harmful in some way, but just being illegal is harm enough for them to be worth avoiding.
Illegal drugs include cocaine, crank, weed, any drug that you do not have a prescription for can be illegal.
Some medicines can make you drowsy and naseus.
Because some drugs are only legal if perscribed by a doctor
pot, marowana, cocan,
Some drugs can ruin the physical well-being of the athlete