they just passed a european directive on the purity of drugs in the EU. Sadly all the impure ones that might actually kill you are not covered due to the "war on drugs." Meanwhile loads of little kids are put permanently on cocaine wikipedia on Ritalin- "Methylphenidate (MPH; Ritalin, Concerta, Metadate, or Methylin) is a psychostimulant drug approved for treatment of attention-deficit hyperactivity disorder, Methylphenidate belongs to the piperidine class of compounds and increases the levels of dopamine and norepinephrine in the brain through reuptake inhibition of the monoamine transporters. It also increases the release of dopamine and norepinephrine. MPH possesses structural similarities to amphetamine, and, though it is less potent, its pharmacological effects are even more closely related to those of cocaine.[1][2][3]