These include dexamphetamine ( Dexedrine 'dexies ' or 'oranges'), methylamphetamine (Methedrine—'speed'), dexamphetamine combined with amylobarbitone (Drinamyl—'purple hearts' or 'blues'), amphetamine combined with dexamphetamine (Anorexine 12.5 mg - black and white minstrels' and Anorexine 20 mg—'black bombs'), phemetrazine (Preludin), diethylpropion (Tenuate), and methylphenidate (Ritalin).