It is concluded that there is no stunting of growth from the long-term use of methylphenidate, dextroamphetamine, or imipramine ... Growth of Hyperkinetic Children Taking Methylphenidate, Dextroamphetamine, or Imipramine/Desipramine Message Subject (Your Name ... Growth of Hyperkinetic Children Taking Methylphenidate, Dextroamphetamine, or Imipramine/Desipramine. Mortimer D. Gross ... 60 with methylphenidate (Ritalin), 24 with dextroamphetamine (Dexedrine), and 16 with either imipramine or desipramine. The ...