A Child Ate a Cannabis Gummy. What Happens in the Next Hour?

A child can eat a cannabis gummy and look ordinary for a while.

Call Poison Help at 1-800-222-1222 before you treat that quiet as good news. In Michigan, that number reaches the Michigan Poison & Drug Information Center at Wayne State in Detroit.

By Jamie, grower at Divine Toke in Michigan. Divine Toke is Sun+Earth Certified.

Divine Toke doesn't sell edibles.

If the child is unconscious, having trouble breathing, or having a seizure, that center says to call 911 right away.

Who do you call if a child ate a cannabis gummy? #

Call Poison Help at 1-800-222-1222 now, even if the child looks fine. Call 911 right away if they're unconscious, having trouble breathing, or having a seizure.

The Michigan Department of Health and Human Services says marijuana and THC edibles can be very harmful if a child ingests them by accident. If you suspect that happened, call the Poison Control Center hotline at 1-800-222-1222. If the reaction is severe, that page says to call 911 or go to the nearest emergency room.

The Michigan Poison & Drug Information Center prints the same 800 number as its public line. The center is at Wayne State in Detroit. On the emergency steps, 911 comes first for unconsciousness, trouble breathing, or a seizure. The next line is the 800 number, for when you think someone may have been exposed to something harmful. They describe that help as free, confidential, and available day and night.

The National Capital Poison Center tells parents to call whether or not symptoms are present, because symptoms might not show up right after a child eats a cannabis edible. Kelly Johnson-Arbor, a medical toxicologist, wrote the article. The page was published September 22, 2025, and updated June 29, 2026. Their short version is on the page: don't guess what you should do.

The Illinois Poison Center says a cannabis edible is highly toxic for a child, and any amount is a reason to call 1-800-222-1222 immediately. Callers here use that same national number. It rings the Detroit center.

Who published it	What they say to do now	What they say about 911
Michigan health department	Call 1-800-222-1222 if you suspect a child consumed marijuana or a THC edible	If the reaction is severe, call 911 or go to the nearest emergency room
Michigan Poison & Drug Information Center, Detroit	Call 1-800-222-1222 if someone may have been exposed	Call 911 right away if someone is unconscious, having trouble breathing, or having a seizure
National Capital Poison Center	Call even if the child has no symptoms yet	The article stresses the call, and it names breathing trouble among the effects
Illinois Poison Center	Any amount, call immediately, and don't wait for symptoms	Call 911 if someone is unconscious or having difficulty breathing
Children's Hospital Colorado	Otherwise call Poison Help at 1-800-222-1222	Call 911 or go to the closest emergency department if the child isn't breathing well, can't be woken, or you're seriously worried
Minnesota Regional Poison Center	If a child eats a cannabis product, call 1-800-222-1222	Call 911 if the child is not breathing, has collapsed, or is having a seizure

The rows aren't copies of each other. Severe, on the state health page, isn't defined in that sentence. The Detroit center is the one that names unconscious, trouble breathing, and seizure. Use the specific line when it matches what you're seeing. Use the 800 number for the rest, including the quiet minutes.

What can the next hour look like? #

The next hour can stay quiet, and a quiet child is not an all-clear.

The Illinois Poison Center says it might take several hours for symptoms to show, and that symptoms may be delayed for up to 3 hours. The same page says not to wait for symptoms to develop. The first hour can sit inside that delay. A kid who is still up and talking can still be in it.

Poison Control says the symptoms show up more slowly, and less predictably, than they do after cannabis is inhaled. If you smoke flower, you already know the fast clock. Eating it is the slow one. That gap is why a normal-looking half hour fools people.

Children's Hospital Colorado puts the inhaled start at about 5 to 30 minutes, with symptoms that often pass in a couple of hours. After a child eats it, they say the start can take as long as 1 to 4 hours. So hour one might be the start, or it might still be the wait. Either way, the call happens in the hour, not after you finish watching it.

What the hour is for:

• Dial 1-800-222-1222 while you can still describe what happened.
• Call 911 if the emergency signs above are already there.
• Keep the child in sight.
• Get the package into your hand if you can do that without walking away from them.

The hour is not for a home experiment. Illinois says don't wait for the symptoms. Poison Control says call even when you don't see any.

When do symptoms start after a child eats a gummy? #

Children's Hospital Colorado says symptoms after eating cannabis can take as long as 1 to 4 hours to start, and they can last several hours.

A pediatric review published April 14, 2025 says THC-related effects in children typically emerge within 2 hours, with more severe symptoms developing within 4 hours. The authors then say children who still look fine should be closely watched for a late start. That line is for clinical care. Your move in the quiet stretch is the phone, so the specialist can say where that watch happens.

The same review, pointing at earlier work, puts symptoms after swallowing at about 1 to 3 hours, with a blood peak spread across about 1 to 6 hours. Ranges like that are why nobody on these pages hands you a minute when you get to relax.

The Minnesota Regional Poison Center says ingested effects may take 30 minutes to 2 hours to begin, can last up to 12 hours, and leftover effects can last up to 24 hours. That's their line for cannabis that was eaten. The children's hospital range is the one written about kids. Both belong on the table. Neither one is a reason to sit out the call.

Source	After it's eaten	How long they say it can last
Children's Hospital Colorado	Onset can take as long as 1 to 4 hours	Several hours
April 14, 2025 pediatric review	Effects in children typically within 2 hours, more severe ones within 4 hours	The review says symptoms often settle in 24 to 48 hours, and getting back to baseline can take hours to days, depending on the amount
Minnesota Regional Poison Center	30 minutes to 2 hours to begin	Up to 12 hours, with leftover effects up to 24 hours
Illinois Poison Center	May be delayed up to 3 hours	The page tells you not to wait out that delay
National Capital Poison Center	Might not show immediately, and slower than inhaled cannabis	Can last for hours, and some severe cases need an intensive care unit

The 24-to-48-hour line is the review's, and they tie it to the Pediatrics paper below. It describes recovery time in cared-for cases. It doesn't mean you spend tonight guessing.

Smoked or vaped cannabis is the other clock, and it doesn't belong to this gummy. Colorado says inhaled symptoms start in about 5 to 30 minutes. Minnesota says inhaled effects can be felt within seconds to minutes, may last up to 6 hours, and leftover effects may last up to 24 hours. If your own session shows up fast, that experience will lie to you about a child who ate a piece.

What signs do poison centers list for children? #

Poison Control lists vomiting, dizziness, trouble walking, a fast heart rate, drowsiness, confusion, and breathing difficulties as common effects in children who eat cannabis edibles.

On that same article, severe cases can include hallucinations, a heart rate that's too slow, and low blood pressure. The page says younger children, especially under 10, are more likely than older children to need a hospital bed and help with breathing. Signs can last for hours. Some children with severe symptoms need an intensive care unit so staff can watch them.

Other pages name the same kinds of signs, in their own wording:

• Illinois includes drowsiness, loss of muscle control and coordination, a faster heart rate, seizure, and coma.
• Minnesota says small children can have slowed breathing, sleepiness, seizures, and coma. The wider list on that page includes anxiety, balance trouble, panic, a fast heart rate, headache, nausea, and vomiting.
• Children's Hospital Colorado describes kids who are unsteady, sleepy anywhere from a little drowsy to impossible to wake, or having trouble breathing. Less often, a child is in a coma and needs a breathing tube and a ventilator.
• The state parent brochure, Marijuana in Michigan, says to call 1-800-222-1222 and watch for problems waking or sitting up, difficulty breathing, and sleepiness or drowsiness. The call sits in that same sentence.

One case on the poison center page #

Poison Control describes a 2-year-old who became unusually sleepy, then had seizures, and needed a breathing tube.

His mother later realized he had eaten her cannabis gummies, and those gummies contained 75 mg of THC. He was transferred to a children's hospital, stayed 36 hours, and made a full recovery. That's their example, not a rate, and not a promise that every child follows the same path. The useful part for this hour is the amount they could name, and the fact that sleepy came before the seizure.

How often are young children admitted after an edible? #

From 2017 through 2021, U.S. poison centers recorded 7,043 edible-cannabis exposures in children younger than 6.

That count is from Tweet, Nemanich, and Wahl in Pediatrics, 2023. They used National Poison Data System reports. In 2017 there were 207 cases. In 2021 there were 3,054. The paper calls the change a 1,375 percent increase.

Most of the exposures, 97.7 percent, happened in a residence. Of the cases they could follow to a known outcome, 70 percent had central nervous system depression. That's the chart term for a slowed nervous system, the bucket these reports use when a child is very sleepy, hard to wake, or worse. Of all the reported cases, 22.7 percent were admitted to a hospital. The abstract also says major and moderate effects rose in the later years, and so did intensive-care and other hospital admissions.

I don't have a Michigan-only count. The national paper is the count, and a missing state number doesn't change the phone call.

The paper is about children under 6 who ate an edible. It doesn't break the count out by city. Homes are where 97.7 percent of those reports started. A legal product on a counter can still be the product in the report.

When do these pages say to call 911? #

Call 911 right away if the child is unconscious, having trouble breathing, or having a seizure. Those are the three emergencies named by the Michigan Poison & Drug Information Center.

The other pages don't all use that exact trio. Read them as they were written:

• MDHHS says if the reaction is severe, call 911 or go to your nearest emergency room.
• The state parent brochure says if the reaction seems severe, call 911 or visit the nearest emergency department. The signs it tells you to watch are problems waking or sitting up, difficulty breathing, and sleepiness or drowsiness.
• Children's Hospital Colorado says to call 911 or go to the closest emergency department if the child isn't breathing well, can't be woken, or you have other serious concerns.
• Illinois says call 911 if someone is unconscious or having difficulty breathing. Seizure and coma are on their symptom list for these edibles.
• Minnesota says call 911 if the child is not breathing, has collapsed, or is having a seizure.

If you're looking at trouble breathing, a child you can't wake, or a seizure, don't pause to compare paragraphs. That's the 911 moment on the Detroit center's site. The emergency-room option on the state health page and the brochure is for a severe reaction, including when you're getting the child to a hospital. When breathing is the problem, 911 is the call.

Sleepiness is on the symptom lists, and it's also the thing Poison Control's 2-year-old case showed first. Tell the 800 number about sleepiness when you call. If the sleepiness has become a child you cannot wake, you're in the 911 wording from that center and from Children's Hospital Colorado.

Should you make a child throw up? #

No page here tells a parent to make the child vomit.

Vomiting is something these sources list as an effect, not as a step you cause. Poison Control puts vomiting next to dizziness, trouble walking, a fast heart rate, drowsiness, confusion, and breathing trouble. Minnesota names nausea or vomiting among the signs. If the child is already throwing up, say so on the call. That's a fact about them, not a treatment you add.

The caller pages from the state health department, the Detroit poison center, Poison Control, Illinois, Minnesota, Children's Hospital Colorado, and the state parent brochure don't give a parent a step of forcing vomit. They also don't give a condition for doing it.

Charcoal shows up in a different kind of source. The April 14, 2025 pediatric review says activated charcoal may be administered within a few hours of ingestion, although it is usually not effective. That sentence lives in a clinical review. It isn't a box under the sink, and it isn't something to start while you look for the phone.

The point of 1-800-222-1222 is that a specialist gives the next instruction for this child, this product, and this hour. The pages above don't include a home step of making them throw up.

What these pages leave off the kitchen counter:

• Don't wait for symptoms before you call. Illinois says not to, and Poison Control says to call even when symptoms aren't there.
• Don't cause vomiting. The caller pages don't tell you to.
• Don't start charcoal at the sink. The review's charcoal line is a hospital sentence, and it says charcoal usually isn't effective.

What do you tell the poison center? #

Keep the child where you can see them, and pick up the package only if you can do it without leaving them.

Children's Hospital Colorado says that if you're worried a child ate marijuana, the serious signs go to 911 or the emergency department, and otherwise you call Poison Help. Alongside that, they say to keep the child supervised and safe from falling, and to remove anything that may be in the child's mouth. Do those things while the phone is in your hand.

Have this much if you can:

• The child's age.
• When you think they ate it, or the earliest and latest time that could be true.
• The package, or a photo of the label. If the pieces were loose, say you don't know the milligrams.
• What they're doing right now. Awake, sleepy, vomiting, unsteady, breathing okay, or not.

Poison Control's example had a 2-year-old and gummies that contained 75 mg of THC. The milligrams were the detail that made the story usable. If you don't have a number, don't invent one so the call sounds calmer. Their page says not to guess what you should do.

Rule R 420.504 says that before a product is sold, the container has to be sealed and labeled, and the warning block has to include "National Poison Control Center 1-800-222-1222." The same rule says the shop hands you a small pamphlet with "National Poison Control Center Hotline 1-800-222-1222." The number on the label and the number you dial are the same number.

The Detroit center also prints 313-486-0078 for local calls, on its contact page. The emergency steps still lead with 1-800-222-1222. You don't need a different city hotline, and the help they describe is a phone call. Don't drive the child to the center's office as the first move.

If another adult can hold the phone while you watch the child, use that. If it's only you, speaker is fine. Stay with the child.

Why is a Michigan gummy easy to mistake for candy? #

Michigan's adult-use cap is 10 mg of THC in one edible portion, and 200 mg in the package, so one piece can be a full adult portion and the bag can hold many of them.

Those figures are in the Cannabis Regulatory Agency bulletin from April 24, 2025. The bulletin says it publishes the maximums under R 420.404. The sentence in the text uses a gummy as the example: the total maximum THC for an adult-use marijuana-gummy container is 200 mg. The table's adult-use edible row, which includes gummies, is 10 mg for one portion and 200 mg for the container.

The medical edible row on that same table is 50 mg for one portion and 200 mg for the package. A medical piece in the house can be much stronger than an adult-use piece, with the same package ceiling. Read the milligrams on the pack in your hand. Don't assume every legal gummy is the 10 mg adult-use portion.

Beverages are a different row. The bulletin caps them at 10 mg for one portion and 100 mg per container, and the footnote says the beverage maximum is per container. A four-pack of drinks is not the same object as a gummy bag. Don't take the drink cap and pretend it's the gummy cap.

The Illinois Poison Center still says any amount is a call. The 10 mg figure is a shopping cap for adults. It isn't a milligram these pages give a child permission to eat.

Poison Control uses a copycat example: a small one-ounce bag of THC chips, styled after a snack brand, containing 600 mg of THC. The page says eating that whole bag is poisonous for children and for adults. Six hundred milligrams is also well past the 200 mg package cap in that bulletin, which is why a knockoff isn't a strong gummy. How the candy-look rules treat cartoons and fake brands is on the lookalike-pack page. If the bag in your kitchen copies a candy brand, tell the poison center the printed milligrams may not be honest.

If the gummy was in the candy bowl, or sitting next to it, say that on the call. You may not know which pieces were cannabis and which were sweets. A candy bowl will not confess. The lock, the closed package, and what to do before that bowl comes out are on the child-resistant storage page. This page starts after a child already ate one.

If a dog or cat got into it too, don't fold the pet into the child's call and hope one answer covers both. The pet lines, and which animal poison number to use, are on the dog and cat page.

FAQ #

Is 1-800-222-1222 the right number in Michigan? #

Yes. The poison center at Wayne State in Detroit tells the public to call 1-800-222-1222. The state health department prints the same hotline for a child who may have ingested marijuana or a THC edible. The center also lists 313-486-0078 for local calls. The emergency steps on their site lead with the 800 number.

What if my child still looks fine? #

Call anyway. Poison Control says to call whether or not symptoms are present, because they might not show immediately. Illinois says symptoms may be delayed for up to 3 hours, and not to wait for them. A fine-looking child in the first hour is still a call.

What if I don't know how many pieces they ate? #

Say you don't know, and still call. Poison Control says not to guess what you should do. Their 2-year-old example could name 75 mg because the parent figured out which gummies were eaten. If the pieces were loose in a bowl, the honest line is that the milligrams are unknown. A guessed number can send the specialist the wrong direction.

What if it was a medical gummy? #

Tell them it was the medical product, and read the milligrams off that package. On the April 24, 2025 CRA bulletin, the medical edible row is 50 mg for one portion and 200 mg for the package. The adult-use edible row is 10 mg and 200 mg. The label in your hand beats either cap, because a real package can sit under the ceiling.

What if the pack copies a candy brand? #

Call, and say the package looks like a copy. Poison Control describes copycat snacks that can carry a lot of THC, including a 600 mg chip-bag example. The candy-look rules are on the lookalike page. A fake label is a reason to trust the package less, not a reason to skip the hotline.

Should I drive to the poison center in Detroit? #

No. You call. The center's site tells you to call 1-800-222-1222, and to call 911 for unconsciousness, trouble breathing, or a seizure. MDHHS adds the emergency room when the reaction is severe. The office isn't the place you show up instead of using the phone.

What if the dog ate one too? #

The child's call comes first, and the pet needs the pet line. Signs and phone numbers for a dog or a cat are on the dog and cat page. A child and a pet can both be sick from the same plate, and they aren't the same call.

Where are the lockbox steps? #

On the storage page, not this one. Child-resistant packaging and the lock before a candy bowl is where the house setup lives. The state brochure also says to lock marijuana products so a child doesn't eat them by accident. If the eating already happened, you're on 1-800-222-1222 now.

Can the hard part start after this hour? #

Yes. The published ranges run past 60 minutes. Children's Hospital Colorado says onset after eating can take as long as 1 to 4 hours. The 2025 review says effects in children typically show within 2 hours, and more severe symptoms within 4 hours. Illinois says the delay can run up to 3 hours. That's why a calm first hour doesn't close the question.

How long can the effects last? #

These pages measure it in hours, not in a quick nap. Colorado says several hours after eating. Minnesota says ingested effects can last up to 12 hours, with leftover effects up to 24. The 2025 review says symptoms often resolve within 24 to 48 hours, and that getting back to baseline can take hours to days depending on the amount. The specialist maps that to the child you're with.

They're already throwing up. Do I make it happen more? #

No. Report the vomiting, and don't cause more. Vomiting is on the Poison Control effect list for children who eat these products. None of the caller pages used here tell a parent to bring on vomiting. If breathing, waking, or a seizure is also in the picture, use the 911 line from the poison center.

Does the 10 mg adult-use cap mean one gummy is small for a child? #

No. Ten milligrams is the adult-use cap on one portion, not a child's allowance. The CRA bulletin sets that 10 mg figure, and 200 mg for the package. Illinois Poison Center says any amount of a cannabis edible is a reason to call. Poison Control's case was gummies that added up to 75 mg, and that child needed a hospital.

The phone call is the plan for this hour. Dial 1-800-222-1222 while the child is still in the room with you.

The lockbox page, the pet page, and the fake-pack page are linked above. They keep their own steps. This one is the hour after the gummy was eaten.

This article is for educational purposes only and is not medical advice. Always consult your healthcare provider before starting any new wellness routine.