I take 50mg of methylphenidate cd. notified that it is out of stock indefinitely. optium rx stated they have vyvance in stock. should i consider switching and what dosage? anything i should be concerned about or aware of with vyvance?

You should contact your treating physician who knows your medical history and exam. S/he is in the best position to know what any equivalent dosing for your needs based on knowledge of your case. Other than a higher expense it performs like the other med.

You have reached the public education site where physicians answer general medical questions. Here we do not diagnose, prescribe, treat, manage, or refer. You are asking questions involving controlled and restricted medications, and management of this MUST be through your usual local physicians.