As of last month (and despite the misinformation that remains posted on the Drugs@FDA and FDA Orange Book websites) immediate-release dextroamphetamine sulfate is now exclusively available from Barr Pharmaceuticals. By calling each of the individual companies, I discovered that: - Mallinkrodt Pharmaceuticals ceased manufacturing dextroamphetamine in May 2008. - Shire Pharmaceuticals ceased manufacturing DextroStat (its "brand-name generic" version of Dexedrine, the original GSK drug that was... read more