The law was enacted in NH in 2013 and the final regulations were published in 2015.

 

New Hampshire Cannabis Law   (PDF)   2013

 

New Hampshire Final Adopted Regulations  May 2015

 

The final regulations allow for reciprocity if you are a non-resident of NH. Your MA marijuana card will be accepted, during periods under 30 days, for possession and medical use of cannabis with additional documentation that can be provided by MedMar Medical.