Call Poison Control at 1-800-222-1222 as soon as you know or suspect a child ate a cannabis chocolate. That call is free, it is answered 24 hours a day, and it is the fastest way to learn whether your child needs an emergency room or can be watched at home. Have the packaging in your hand if you can. Specialists will ask the child's age and weight, how much was eaten, the THC milligrams listed on the label, and how long ago it happened, then give you a plan. Do not wait for symptoms before you call. Edibles can take an hour or more to hit, and a child who looks fine at minute ten may not look fine at minute ninety.
This guide covers what THC does to a small body, which symptoms matter, what to do while you wait, and when to skip the wait and go straight to the ER.
What THC Does to a Child's Body
THC binds to receptors in the brain and nervous system. A child weighs far less than an adult, so the same chocolate square delivers a much larger dose per pound of body weight. That is why a piece that barely affects a grown adult can leave a toddler heavily sedated.
Edibles also behave differently from smoked cannabis. When THC is swallowed, it passes through the liver and is converted into 11-hydroxy-THC, a metabolite that is more potent and longer lasting. Absorption is slow, so the child keeps getting higher after the first symptoms appear. If the chocolate was dark or baking chocolate, the chocolate itself adds caffeine-like stimulants that can push heart rate and agitation higher. Homemade edibles are the hardest to judge because nobody knows the actual milligram count.
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Symptoms and Timing
Watch for this cluster:
- Heavy sleepiness or a child who is hard to wake
- Unsteady walking, staggering, or trouble sitting up
- Slurred speech or confusion
- Glassy eyes or dilated pupils
- Fast heart rate
- Nausea, vomiting, or stomach pain
- Dizziness or unsteadiness when standing
- Agitation, crying that will not stop, or panic
- In serious cases: slow or shallow breathing, seizures, or unresponsiveness
First effects usually appear 30 minutes to 2 hours after eating, sometimes up to 4 hours with a full stomach. Symptoms peak around the 2 to 4 hour mark. Because of the liver conversion, effects can run 12 hours or longer, and a large dose can stretch past a full day.
What to Do While You Wait
- Stay with the child. Do not leave them alone or let them sleep unsupervised.
- Keep them upright if they are awake, or on their side if they are drowsy or vomiting, so the airway stays clear.
- Write down the time you found them and the time they ate, if you know it.
- Log each symptom with a timestamp so you can report a pattern.
- Offer small sips of water if the child is awake and alert.
- Keep the packaging and photograph the label, including the THC milligram count and the brand.
- Follow the instructions Poison Control gives you, including any callback time they set.
What Not to Do
- Do not make the child throw up unless a medical professional tells you to.
- Do not give ipecac, activated charcoal, coffee, or milk.
- Do not feed them more food to soak up the THC.
- Do not leave them alone to sleep it off.
- Do not assume a CBD or hemp label means there is no THC. Some products carry more than the label claims.
Watch at Home or Go to the ER
Poison Control or a clinician makes the final call for your child. The general pattern looks like this.
Often watched at home with Poison Control guidance
- An older child or teen who took a small dose, such as a bite or one low-dose piece
- Mild sleepiness but easy to wake
- Normal breathing and normal skin color
- No vomiting that will not stop
- An adult who can stay awake and watch the child for the full window
Go to the emergency room
- Child under 5, or a child who ate a large or unknown amount
- Homemade edible with no potency information
- Trouble breathing, slow or shallow breaths, or pauses in breathing
- A seizure
- Cannot be woken, or responds only to pain
- Vomiting that will not stop
- Blue or gray lips, or pale and clammy skin
- Heartbeat that feels very fast, weak, or irregular
- You cannot safely supervise the child at home
When to Call 911
Call 911 instead of driving yourself if the child stops breathing, has a seizure, cannot be woken, or has a pulse you cannot feel. Tell the dispatcher that you suspect a cannabis edible was eaten, the child's age and weight, and how long ago it happened. Bring the packaging with you to the hospital.
What to Tell Poison Control or the ER
- Child's age, weight, and any medical conditions
- Product name, form, and THC milligrams per piece
- How many pieces or bites, and how much of the bar is gone
- Time of ingestion, and when symptoms started
- Any other medications, supplements, alcohol, or substances the child could have reached
- Your phone number and whether you are driving or calling an ambulance
How Long It Lasts
Most children return to normal within 12 to 24 hours with supportive care and monitoring. A large dose, a very young child, or a product with unknown potency can extend that. The first hour tells you very little, so keep watching through the peak window before you relax.
Preventing the Next Time
- Store cannabis edibles the way you store prescription medication: locked, up high, out of reach.
- Keep them in the original child-resistant packaging instead of moving them to a candy dish.
- Know the milligram count of everything in the house and write it down.
- Tell babysitters, grandparents, and anyone else who watches your child where it is kept.
- Post the Poison Control number, 1-800-222-1222, on the refrigerator.
This guide is general information, not a substitute for direct advice from Poison Control, a nurse line, or a physician who is treating your child.