I remember the 'K2' rage here a couple of years ago. Arkansas banned it and about 2-3 months later the Feds banned it. I thought about trying it just to see if it really was the hype everyone said it was but never got to. I didn't have the guts to try it once it was banned - I don't want to end up in jail over something stupid.
There was another substance that was basically synthetic THC, but I forgot what the street name of it is.
Both of these substances are still available on the black market. You just have to know your connections. I have no desire now to try either of these.
As for 'designer drugs', I typically think of things like LSD, GHB, XTC, etc as the 'designer drugs', however they are still drugs and can still do a lot of damage.
As for prescription drugs, they need to find a way to make it much more difficult for abusers of prescription painkillers to obtain these, while leaving the honest people alone.
Perhaps give patients only a 30-day supply with a required visit/checkup before a refill can be filled. Far as I know doctors currently prescribe a 90-day supply and tell their patients to 'take as needed'. To me, this is a setup for disaster for someone who has done narcotics in the past or has that 'addiction prone' personality.
What's sad is those who do abuse prescription drugs often don't see themselves as addicts because they justify it by saying they aren't doing 'real drugs' like marijuana, cocaine, heroin, meth, etc. Thing is, they are chasing after the very same effects that these 'real drugs' have through prescription drugs.
Drugs are bad for you, plain and simple.