SECTION 1. Chapter 94G of the General Laws is hereby amended by inserting after section 14 the following section:-

Section 15. The commissioner of the department of public health shall investigate the effects of marijuana and marijuana products with a high potency of tetrahydrocannabinol on the human body. As part of its investigation, the secretary shall make a recommendation on (i) whether there should be restrictions on the potency of tetrahydrocannabinol in marijuana and marijuana products; and (ii) a recommendation of what that restriction may be.

The secretary shall file a report of its findings and recommendations with the clerks of the house of representatives and the senate, the chairs of the house and senate committees on ways and means, the house and senate chairs of the joint committee on public health, the house and senate chairs of the joint committee on consumer protection and professional licensure and the house and senate chairs of the joint committee on marijuana not later than September 1, 2017.

SECTION 2. Subsection (b) of section 10 of chapter 334 of the acts of 2016 is hereby amended by striking out the words “,marijuana product manufacturer”

SECTION 3. Subsection (c) of section 10 of said chapter 334 is hereby amended by striking out the words “,marijuana product manufacturer”

SECTION 4. Subsection (d) of section 10 of said chapter 334 is hereby amended by striking out the words “or for marijuana product manufacturer,”

SECTION 5. (a) The cannabis control commission established in section 76 of chapter 10 of the General Laws shall not issue a license for a marijuana product manufacturer as defined in section 1 of chapter 94G of the General Laws until 2 years after it issues its first license for a marijuana retailer as defined in section 1 of chapter 94G.

(b) Marijuana retailers shall be prohibited from selling marijuana products other than marijuana flower except as directed by the cannabis control commission.

(c) The cannabis control commission shall make a determination of what marijuana products, other than marijuana flower, may be manufactured by marijuana product manufacturers and sold by marijuana retailers after the 2 year period described in subsection (a). Any determination shall be made on the basis of public safety, any federal compliance issues and the report relative to the effects of marijuana and marijuana products with a high amount of tetrahydrocannabinol by volume on the human body as determined by the commissioner of the department of public health.  Such determination made by the cannabis control commission shall be filed in a report made available to the public.

If the cannabis control commission determines that a marijuana product other than marijuana flower may be sold, the commission may issue licenses for marijuana product manufacturers 30 days after publishing the report.