NCCIH · Research overview
Cannabis and cannabinoids
A starting point for terminology, research evidence and the limits of what is known.
Read the research overview →Cannabis Learning Center
The education collection
Clear information.
Better questions.
Understand the terms, explore the evidence and know where to turn for help. A practical library of cannabis and CBD resources from public-health and regulatory sources.
6 primary-source resourcesEducation without product recommendationsSources checked September 11, 2026
Start with the source
A library you can explore.
Choose a topic or search for the question on your mind. Every resource below opens the organization’s own guidance.
6 resources · original sources linked below
FDA · CBD
CBD: risks and unanswered questions
FDA guidance on possible side effects, interactions and gaps in knowledge about CBD.
Read FDA guidance →CDC · Poisoning
Edibles and accidental exposure
Information about delayed effects, poisoning risks and protecting children from accidental ingestion.
Read CDC poisoning guidance →CDC · Driving
Cannabis and impairment
How cannabis can affect driving skills and why a sober travel plan matters.
Read CDC driving guidance →California DCC · Lab reports
What a certificate of analysis records
California’s explanation of laboratory testing and batch results. Requirements are specific to California.
Read laboratory guidance →Poison Control · Urgent help
What to do in a poisoning emergency
Recognize emergency warning signs and find the U.S. poison-center telephone number.
Read first-aid guidance →No resources match that search and topic. Try a shorter term or clear the filters.
Turn reading into questions
Make your next conversation more useful.
Choose the topics you want to discuss with a clinician, then copy a short question list. The checklist helps organize a conversation; it does not determine whether cannabis or CBD is appropriate for you.
-
Start with your medicines.
Ask about possible interactions with prescriptions, over-the-counter medicines and supplements. -
Ask what the evidence supports.
Separate a research finding from a claim about a particular product. -
Discuss risks and next steps.
Ask what applies to your own situation and when to seek help.
Research literacy
Look past the headline.
Learn four habits for examining a cannabis or CBD health claim: follow the source, identify the participants, look for a comparison and read the limits.
Read the health-claims guide →A short reading exercise
Practice with a clearly fictional headline and see which questions help put research in context. No clinical knowledge is required.
Try the headline exercise →Common questions
A few useful distinctions.
Does “CBD” mean there are no health risks?
No. FDA identifies risks including liver injury and interactions with other medicines. Its guidance also describes important unanswered questions. Read the FDA consumer update and discuss your own situation with a clinician.
Why can edibles lead to accidental overexposure?
CDC says edible effects can take 30 minutes to 2 hours to appear and can last longer than expected. That delay can contribute to poisoning. Read CDC’s explanation.
What does a lab report actually tell me?
A certificate of analysis records results for a tested batch. California DCC describes testing for cannabinoids and a range of contaminants, with pass or fail results. These are California-specific requirements. A lab report is not personalized medical advice. See California DCC laboratory guidance.
Is there a fixed time after use when driving is safe?
This resource does not calculate a driving clearance time. Cannabis can affect reaction time, decisions and coordination. CDC says the safest option when planning to drive is not to use alcohol or drugs, including cannabis. Read CDC’s driving guidance.