An Act relative to the labeling of marijuana

This bill requires marijuana products sold in Massachusetts to include specific, clear labeling on packaging. It directly affects marijuana businesses (growers and manufacturers) by mandating minimum labeling elements like the exact THC content per serving, child safety symbols, testing results, batch numbers, and a required FDA disclaimer. Key provisions include bold display of THC levels, a "KEEP AWAY FROM CHILDREN" warning, and updated health warnings about psychosis risks linked to THC use, especially for young or frequent users. The labels must also list ingredients, allergens, and include rotating health warnings based on research, with updates as new science emerges.