The packaging requirements for marijuana in Colorado are as follows:

• The packaging must be child-resistant and tamper-evident.
• The packaging must be opaque and resealable.
• The packaging must include the following information:
  • The name of the product.
  • The name of the manufacturer.
  • The amount of THC in the product.
  • A warning that marijuana has intoxicating effects and may be habit forming and addictive.
  • A warning that marijuana impairs concentration, coordination, and judgment. Do not operate a vehicle or machinery under its influence.
  • A warning that there are health risks associated with consumption of marijuana.
  • A warning that marijuana should not be used by women who are pregnant or breast feeding.
  • A warning that marijuana is for use only by adults 21 years of age and older. Keep out of the reach of children.
  • The universal symbol for cannabis.
  • A unique identifier that can be used to track the product from the point of manufacture to the point of sale.

The packaging must also include the following information for edible marijuana products:

• The serving size.
• The number of servings per package.
• The amount of THC in each serving.
• A warning that edible marijuana products may contain more THC than other forms of marijuana and that they can be more potent.
• A warning that edible marijuana products can take up to 2 hours to take effect and that they can have long-lasting effects.
• A warning that edible marijuana products should not be consumed by people who are pregnant, nursing, or taking certain medications.
• A warning that edible marijuana products should not be consumed by people who are not familiar with the effects of marijuana.
• A warning that edible marijuana products should be consumed slowly and in small doses.

The packaging requirements for marijuana in Colorado are enforced by the Colorado Department of Revenue.