New Hampshire may take a step closer to legalizing medical marijuana this week, with a House vote scheduled on a proposal that would sanction five dispensaries and allow patients or caregivers to grow up to three adult plants. An amended version of the bill restricting out-of-state patients from purchasing or growing marijuana in New Hampshire and tightening other language was overwhelmingly approved by a House committee. The New Hampshire Legislature has previously passed three medical marijuana bills, all vetoed by the former governor, John Lynch. Governor Maggie Hassan has endorsed a tightly regulated medical marijuana law but has raised concerns about this bill’s home-grow option. Eighteen states and the District of Columbia allow people who are sick or in chronic pain to legally buy and use marijuana for medical purposes.