The short answer
Call Poison Control at 1-800-222-1222 right away. Do not wait for symptoms to show up. The line is free, it runs 24 hours a day, and the specialists who answer handle edible exposures every week. They will ask the child's weight, how many pieces were eaten, the THC dose per piece if you still have the package, and when it happened. Then they tell you whether to watch at home or head in.
Call 911 instead if the child is hard to wake, breathing slowly or oddly, having a seizure, or turning blue. Those cases are uncommon, but they do happen, mostly in toddlers who get into a whole pack.
How Long After Eating Cannabis Do Symptoms in a Child Appear?
What a cannabis edible does to a small child
Children are not tiny adults here. A 25 mg gummy that barely touches an adult can send a 25 pound toddler into a long, scary night. Kids have no tolerance, and their bodies clear THC more slowly.
Watch for these signs, which usually start 30 minutes to 2 hours after eating and can last 12 hours or more:
- Sleepiness that is deeper than a normal nap
- Unsteady walking, clumsiness, slumped posture
- Vomiting, sometimes repeated
- Fast heart rate, flushed skin
- Confusion, agitation, or crying that will not settle
- In heavy doses, slowed breathing, seizures, or coma
There is no antidote for THC. Emergency care is supportive: monitoring, fluids, oxygen if needed, and sometimes activated charcoal if the child arrives soon after eating. Never make a child throw up on your own.
Why gummies are the ones that get eaten
The convenience that sells edibles is the same thing that puts them in reach. Resealable pouches, single-serve packs, bright fruit flavors, and shapes that look like the candy in the checkout aisle. A zipper top is not child-resistant once it is open, and plenty of people leave a pack in a purse, a nightstand drawer, or a car cupholder.
That is the trade the market made. Fast, discreet, portable dosing for adults means a product that a curious four year old cannot tell apart from a gummy bear.
What to bring and what to say
Bring the packaging if you can, or a photo of the label showing THC and CBD content. Tell the staff how much the child weighs and the time of ingestion. Be direct about the cannabis. Nobody is calling anyone, and the details change the plan.
Prevention that holds up
- Store edibles in a locked box, the same place you keep medications.
- Keep them out of bags, coat pockets, and cars.
- Count pieces so you know if any are missing.
- Buy plain packaging when you can, and skip candy-shaped products if kids are in the house.
- Tell sitters and visiting family where it is and that it is not candy.
A locked drawer and a phone number on the fridge cover most of the risk. Keep both.