Generic Concerta is called methylphenidate extended-release (ER). There are several pharmaceutical companies that make generic versions of Concerta that are equivalent to the brand-name product. A number of manufacturers make generic versions of Concerta, including some that are not guaranteed to have the same osmotic-controlled release oral delivery system (OROS) as the original Concerta. The only “authorized generic” is currently made by Patriot Pharmaceuticals, a wholly-owned subsidiary of Janssen. Wondering when a generic version of Concerta will be available? Get details on FDA approval status, generic manufacturers, and patent expirations. Methylphenidate belongs to a group of medicines called stimulants. It may work by increasing levels of natural brain chemicals, such as norepinephrine and dopamine. Methylphenidate ER (Concerta, Relexxii) is an expensive drug used to treat attention-deficit hyperactivity disorder (ADHD). It is also used to treat narcolepsy. This drug is slightly more popular than comparable drugs. It is available in brand and generic versions. It belongs to a group of drugs called stimulants. Concerta is a brand-name medication that’s also available as the generic drug methylphenidate ER (extended release). Concerta has a boxed. Methylphenidate hydrochloride extended-release (ER) is a drug approved by FDA to treat attention deficit-hyperactivity disorder (ADHD) in adults and children ages six and older.