Medical Risks of Eating Cannabis Edibles
Edible cannabis risks include delayed overdose, 11-hydroxy-THC potency, panic, cardiac strain, and drug interactions. Learn symptoms and when to get care.
Answer
Take 1 to 2.5 mg of THC for a first edible. Wait two hours before taking more. Keep the package out of reach between doses. Most greening out cases trace to one of two errors: too much THC at the start, or a second dose taken before the first one peaked.
What greening out is
Greening out is acute THC intoxication. Symptoms include nausea, vomiting, dizziness, a fast heart rate, sweating, confusion, and anxiety or panic. It is not a fatal overdose. No human death from cannabis alone has been confirmed. The episode ends. THC from an edible lasts 4 to 8 hours in most cases, and longer after a high dose.
what to do if edible is too strong
Dose
- New user: 1 to 2.5 mg THC.
- Occasional user: 2.5 to 5 mg.
- Daily user: 5 to 10 mg.
- State package limit in most US markets: 100 mg total, 10 mg per serving.
A 10 mg piece is one state-defined serving, not one starting dose. Cut a gummy into quarters with a knife. Do not estimate by eye. Labels list THC per piece and THC per package. Read both numbers before you open the bag.
how long do edibles take to kick in
Timing
An edible takes 30 to 120 minutes to produce effects. Peak blood levels arrive at 2 to 4 hours. A redose at 45 minutes lands on a curve that has not peaked. Wait the full two hours. If the first dose did nothing after two hours, add half of the first dose, not double.
how long do edibles take to kick in
What raises the risk
- Alcohol. Both substances slow reaction time and raise heart rate.
- A high-fat meal. Fat can increase THC absorption.
- Homemade edibles with unknown THC content.
- Hemp-derived delta-8 products with labels that do not match lab results.
- An empty calendar. Plan 8 hours with no driving.
If it starts
- Sit or lie down. Keep the head above the chest.
- Sip water. Do not force food.
- Chew black peppercorns or smell ground pepper. Evidence for this is anecdotal.
- Take 10 to 20 mg of CBD if you have it. It may reduce anxiety. CBD does not reverse THC.
- Do not drive, bike, or use equipment.
- Ask one person to stay with you.
When to call for help
Call Poison Control at 1-800-222-1222 for dose questions and for any child who ate an edible. Call 911 for chest pain, trouble breathing, a seizure, repeated vomiting, or a heartbeat that will not slow.
Storage
Keep edibles in the original child-resistant package. Store them apart from other food. Poison center calls for edible cannabis in children under 6 rose after retail sales expanded in US states.