Since dextromethorphan is really an optical isomer in the Timetable II opiate levomethorphan (but doesn't act like an opiate), an exemption was required to preserve it an uncontrolled substance. The Federal Analog Act does not apply to dextromethorphan because a different drug software has actually been submitted for it.[citation needed] https://socialistener.com/story3569072/facts-about-dextromethorphan-dxm-for-sale-in-copyright-revealed