As of April 21, 2023, Vallon Pharmaceuticals, Inc. was acquired by GRI Bio, Inc., in a reverse merger transaction. Vallon Pharmaceuticals, Inc., a clinical-stage biopharmaceutical company, focuses on the development and commercialization of novel medications for central nervous system disorders with a focus on abuse-deterrent medications. The company's lead investigational product candidate is ADAIR (Abuse-Deterrent Amphetamine Immediate-Release), an abuse-deterrent oral formulation of immediate-release dextroamphetamine for the treatment of attention-deficit/hyperactivity disorder (ADHD) and narcolepsy.

It is also developing ADMIR, an abuse deterrent formulation of methylphenidate for the treatment of ADHD.