N.H. Rev. Stat. § 318:8
It shall be the duty of the board, through officials and employees appointed by it or under its supervision for that purpose, and of all peace officers within the state, and of all county attorneys, to enforce all the provisions of this chapter. When so requested, the department of health and human services and its officials and employees shall cooperate with the board in collecting and analyzing samples of drugs and medicines sold, or suspected of being sold, in violation of this chapter. The members of the board, its inspectors and investigators shall have free access during business hours to all places where drugs, medicines, poisons or hypodermic devices are held, stored, or offered for sale and to all records of sale and disposition of drugs.
RSA 318:8
1921, 122:5. PL 210 :8. 1931, 123:1. RL 256:8. RSA 318:8. 1965, 275:2. 1981, 484:18. 1985, 324:4. 1995, 310:181, eff. Nov. 1, 1995.