Short answer
No federal statute sets a minimum purchase age for CBD. The FDA regulates CBD under drug and food rules but has not issued an age floor for retail sales. That leaves the decision to state law and store policy. In practice, most US retailers require buyers to be 18 or older, and a growing number of states require 21 or older for hemp-derived products that cause intoxication, including delta-8 THC and delta-9 THC above the federal dry-weight limit.
what age can you buy cannabis legally
So the honest answer is: it depends on the product, the state, and the store. A bottle of CBD isolate sold at a pharmacy may have no age gate. A delta-8 vape at a smoke shop almost certainly does.
What federal law covers
The 2018 Farm Bill removed hemp and its derivatives from the Controlled Substances Act definition of marijuana, provided the product stays at or below 0.3 percent delta-9 THC on a dry weight basis. That change legalized hemp at the federal level. It did not create a purchase age.
The FDA has approved one CBD drug, Epidiolex, for specific seizure disorders, and it has stated that CBD cannot lawfully be added to food or marketed as a dietary supplement under current rules. The agency has not used that position to set a customer age.
what age can you buy cannabis legally
Where the 18+ rule comes from
Several states wrote CBD into their own codes with an 18-year minimum, mirroring rules for tobacco and nicotine alternatives. National retail chains apply 18+ age gates on their own to limit liability and to stay consistent across state lines. If a product is labeled as a dietary supplement or a topical, most stores treat it like any other over-the-counter item and do not card at all.
Where the 21+ rule comes from
States that legalized adult-use cannabis, such as Colorado, California, and Illinois, route all cannabis and hemp-derived intoxicating products through licensed dispensaries, where the minimum age is 21. Some states without adult-use programs, including Tennessee and Texas, moved to restrict or ban intoxicating hemp products rather than let them sell to anyone.
How to check the rule that applies to you
- Read the product label and note whether it lists delta-8 THC, delta-9 THC, or THC-O.
- Look up your state's hemp and cannabis statutes on the state legislature website.
- Check whether your state requires intoxicating hemp products to be sold only in licensed dispensaries.
- Call the store before you drive over and ask what age they card at.
- Bring a government-issued photo ID, even if you expect no check.
- Ask the clerk which rule they are applying if the sale is refused.
Age limits for children and teens
No CBD product is approved for pediatric use except Epidiolex, which requires a prescription. Pediatric groups have flagged risks around dosing accuracy, liver enzymes, and interactions with other medications. If a minor needs CBD, that decision belongs with a physician, not a retail counter.