FOCALINXR® (dexmethylphenidate hydrochloride) FOR YOUR PRESCRIPTION. *. If you and your doctor decide that FOCALIN XR ® is right for you, start talking about your treatment plan. Pay only $10 for a 30-tablet prescription * of FOCALIN XR ® . * Limitations apply. Up to $720 annual limit. Offer not valid under Medicare, Medicaid, or any other federal or state program.