ENID, Okla. — A 15-year-old Oklahoma girl has died after her family said she participated in the dangerous “Benadryl Challenge,” a social media trend that encourages participants to consume excessive amounts of the over-the-counter allergy medication Benadryl in an attempt to hallucinate.
According to her family, Leah Presson suffered seizures and cardiac arrest after participating in the challenge. She was transported to the hospital, where doctors later determined she had no brain activity and declared her brain dead. On June 29, her father, Richard Presson, confirmed that Leah had died from her injuries.
Her death has once again drawn national attention to a dangerous social media challenge that federal health officials first warned about in 2020 after multiple teenagers were hospitalized from intentionally overdosing on diphenhydramine. Although social media platforms say they prohibit content promoting dangerous challenges, medical experts and grieving families continue warning that the trend has not completely disappeared.
Unlike many viral internet challenges that result in embarrassment or minor injuries, the Benadryl Challenge can become fatal within a very short period of time.
So what exactly is the Benadryl Challenge?
Why would anyone intentionally take dangerous amounts of an allergy medication?
How does an over-the-counter medicine become deadly?
And what warning signs should parents recognize before it is too late?
Those are the questions many families are asking following Leah’s death, and they deserve more than a brief headline.
What Is the Benadryl Challenge?
The so-called “Benadryl Challenge” is a dangerous social media trend in which participants intentionally consume excessive amounts of diphenhydramine—the active ingredient in Benadryl and certain generic allergy medications—in an attempt to induce hallucinations or other altered mental effects.
Unlike many viral internet challenges centered around stunts or dares, this challenge involves the intentional misuse of medication. Participants are encouraged to take doses far beyond the recommended therapeutic amount, often while recording themselves or sharing the experience online.
Medical professionals stress that the hallucinations sought by participants are not a recreational effect of the medication—they are a symptom of serious poisoning.
Diphenhydramine is classified as a first-generation antihistamine and is commonly used to relieve allergy symptoms, treat hives, reduce itching, and, in some cases, as a short-term sleep aid because of its sedating effects. When taken as directed, it has been used safely by millions of people for decades.
The danger begins when normal dosing recommendations are ignored.
As the amount of diphenhydramine in the body increases, the medication begins affecting the central nervous system and cardiovascular system in ways it was never intended to. What may begin as extreme drowsiness and confusion can rapidly progress into agitation, disorientation, blurred vision, dangerously elevated body temperature, hallucinations, seizures, abnormal heart rhythms, cardiac arrest, coma, and death.
Health experts emphasize that there is no “safe” way to participate in the Benadryl Challenge.
The effects can vary dramatically depending on a person’s age, weight, underlying medical conditions, and the amount consumed. Two individuals taking similar quantities may experience vastly different outcomes, making the challenge particularly unpredictable and dangerous.
The trend first gained widespread national attention in 2020 after multiple teenagers across the United States were hospitalized following reports that they had intentionally overdosed on diphenhydramine after viewing videos online. That same year, the U.S. Food and Drug Administration issued a public warning urging parents, caregivers, educators, and young people to avoid the challenge and reminding the public that taking higher-than-recommended doses of Benadryl or its generic equivalents can result in serious heart problems, seizures, coma, or death.
Although social media companies have stated that content promoting dangerous challenges violates their community standards and have taken steps to remove such material, incidents involving the Benadryl Challenge have continued to surface over the years, serving as a sobering reminder that dangerous online trends can resurface even after platforms attempt to suppress them.
For physicians and poison control experts, the message has remained consistent from the beginning:
This is not a harmless internet prank.
It is intentional medication poisoning, and in some cases, the consequences can be fatal.
How Does Benadryl Become Deadly?
For many parents, one of the most difficult questions to understand is how an over-the-counter allergy medication can become life-threatening.
The answer lies in the dose.
Diphenhydramine is considered safe when used exactly as directed. At recommended doses, it works by blocking histamine receptors, helping to relieve allergy symptoms such as sneezing, itching, watery eyes, and hives. Because it also causes drowsiness, it is commonly found in some nighttime cold medicines and sleep aids.
Taking large amounts overwhelms the body’s normal physiological processes.
Instead of acting primarily as an allergy medication, diphenhydramine begins interfering with the nervous system, heart, and other vital organs. Doctors refer to this as diphenhydramine toxicity or anticholinergic poisoning, a medical emergency that requires immediate treatment.
As toxicity develops, symptoms often worsen rapidly.
A person may initially appear unusually sleepy or confused. That confusion can quickly progress into severe agitation, disorientation, slurred speech, blurred vision, dilated pupils, and an inability to distinguish reality from hallucinations. Some individuals become combative or behave irrationally because they are no longer processing their surroundings correctly.
As blood levels continue to rise, the risks become significantly more dangerous.
The medication can interfere with the heart’s electrical system, leading to dangerous rhythm disturbances that reduce the heart’s ability to pump blood effectively. At the same time, it can trigger seizures, impair breathing, and dramatically increase body temperature.
In severe overdoses, the heart may stop altogether.
When cardiac arrest occurs, blood flow to the brain is interrupted. Even if emergency responders are able to restart the heart, prolonged oxygen deprivation can result in catastrophic brain injury. If brain tissue is deprived of oxygen for too long, the damage may become irreversible.
This is one reason overdose victims who initially survive may later be declared brain dead despite intensive medical treatment.
Medical professionals emphasize that there is no way to predict exactly how one person’s body will respond to a massive overdose. Factors such as age, body weight, underlying health conditions, other medications, and the amount consumed can all influence the outcome. What causes serious illness in one person may prove fatal in another.
That unpredictability is precisely what makes the Benadryl Challenge so dangerous.
Participants are not simply taking “a lot of allergy medicine.”
They are placing enormous stress on the brain, heart, and central nervous system while gambling with consequences that can include permanent disability or death.
For emergency physicians and poison control specialists, there is no mystery about what is happening inside the body.
They are treating acute poisoning—not a harmless internet challenge.
A History of a Dangerous Trend
Although many people are only now hearing about the Benadryl Challenge because of Leah Presson’s death, the trend itself is not new.
The challenge first drew widespread national attention in 2020 after videos began circulating on social media encouraging teenagers to intentionally consume excessive amounts of diphenhydramine in an effort to hallucinate. The videos often portrayed the experience as entertaining or exciting while minimizing—or completely ignoring—the potentially fatal consequences.
As reports of overdoses increased, hospitals across the United States began treating teenagers suffering from diphenhydramine poisoning. Some required intensive care after experiencing seizures, dangerous heart rhythm disturbances, and other life-threatening complications.
The growing number of incidents prompted the U.S. Food and Drug Administration (FDA) to issue a public warning in September 2020.
The agency cautioned that taking higher-than-recommended doses of Benadryl or other medications containing diphenhydramine could result in serious heart problems, seizures, coma, and death. The FDA also urged parents to keep medications secured, monitor adolescents’ online activity, and seek immediate emergency medical attention if an overdose was suspected.
Following the FDA’s warning, TikTok announced that content promoting the Benadryl Challenge violated its Community Guidelines. The platform said it was removing videos encouraging the behavior and redirecting users searching for related terms toward educational and safety resources.
Health officials have also cautioned that dangerous online challenges are not confined to a single social media platform. As trends spread across the internet, videos and posts may be shared, reposted, or recreated on multiple platforms, allowing harmful challenges to continue circulating even after individual companies remove original content.
Despite those efforts, health officials have continued warning that dangerous online challenges can resurface months or even years later.
Unlike traditional fads that eventually disappear, social media trends can quickly regain popularity when old videos are reposted, shared on different platforms, or introduced to a new generation of users unfamiliar with the original warnings.
Medical experts say that is one of the greatest challenges facing parents today because a dangerous trend does not have to go viral nationwide to cause tragedy—it only takes one video, one recommendation from a friend, one repost, or one teenager believing that because a medication is sold over the counter, it must be harmless, a misconception that history has shown can have deadly consequences.
What Parents Should Know
For many parents, stories like this raise an unsettling question:
How do I know if my child is in danger?
There is no single warning sign that a teenager may be considering a dangerous online challenge. Health professionals say open communication, awareness of online activity, and recognizing the symptoms of medication misuse can all play an important role in preventing tragedy.
Parents should also remember that because Benadryl is sold over the counter, many teenagers mistakenly assume it is safe regardless of the amount taken.
That assumption is dangerously wrong.
A medication’s availability without a prescription does not mean it can be safely misused. Every medication has recommended dosing instructions, and intentionally exceeding those limits can have serious or even fatal consequences.
Health professionals advise parents to become familiar with the warning signs of a possible diphenhydramine overdose.
These may include:
- Extreme drowsiness or difficulty staying awake.
- Confusion or unusual behavior.
- Hallucinations or seeing things that are not there.
- Slurred speech.
- Dilated pupils and blurred vision.
- An unusually rapid heartbeat.
- Agitation or aggression.
- Difficulty breathing.
- Seizures.
- Loss of consciousness.
If a parent suspects that a child has intentionally consumed a dangerous amount of diphenhydramine—or any medication—they should call 911 immediately or contact their local poison center without delay. Waiting for symptoms to improve on their own can waste valuable time during a medical emergency.
Experts also encourage parents to talk with their children about the reality of online challenges.
Many viral trends are presented as entertainment, but videos often fail to show the real consequences. They rarely include the ambulance ride, the emergency room, the intensive care unit, or the unimaginable grief experienced by families whose loved ones never return home.
A few moments of online attention are never worth risking a lifetime.
Leah Presson’s death serves as a heartbreaking reminder that what may appear to be a harmless internet dare can, in reality, become a medical emergency with irreversible consequences.
For parents, the conversation about online safety is no longer limited to strangers on the internet or inappropriate content.
It also includes helping young people recognize that not every trend is harmless, not every challenge is worth accepting, and not every video tells the whole story.
TRJ Verdict
The death of 15-year-old Leah Presson is more than another tragic headline. It is another painful reminder that dangerous online trends continue to evolve faster than many parents, educators, and even technology platforms can respond.
While social media has transformed how people communicate, learn, and connect with one another, it has also created an environment where reckless behavior can spread to millions of users in a matter of hours. Challenges that once might have been limited to a small group of friends can now reach young people across the country with the tap of a screen.
That reality places an even greater responsibility on parents, schools, healthcare professionals, and social media companies alike.
Parents cannot monitor every conversation or every video their children watch, but open communication remains one of the strongest forms of protection. Taking an active role in understanding the apps, platforms, and content their children access, while having honest conversations about peer pressure, critical thinking, and the real-world consequences of online challenges, may help prevent a momentary decision from becoming a lifelong tragedy.
Social media companies also bear a significant responsibility. Platforms that profit from user engagement should continue investing in technologies and moderation efforts that identify and remove dangerous challenge content before it reaches vulnerable users. While many companies prohibit this type of material and state that they remove it when discovered, tragedies like Leah Presson’s death raise difficult questions about how effectively those safeguards are working and whether more can be done to prevent similar content from spreading.
There is also an important lesson for the public.
Over-the-counter does not mean harmless.
Medications available without a prescription are still powerful drugs designed to be used exactly as directed. When intentionally misused, they can become just as dangerous as many prescription medications, resulting in poisoning, permanent injury, or death.
Ultimately, the Benadryl Challenge is not entertainment.
It is not harmless fun.
It is not a game.
It is a reminder that internet popularity is never worth risking a young life.
If Leah Presson’s story prevents even one teenager from attempting a dangerous online challenge or encourages one parent to have a life-saving conversation with their child, then her story may help spare another family from experiencing the unimaginable grief that hers now endures.
That is a conversation worth having—and one that should not end when today’s headlines fade.
Everyone at The Realist Juggernaut extends our deepest condolences and prayers to the Presson family during this heartbreaking time. It is our sincere hope that by sharing Leah’s story, greater awareness of the dangers posed by reckless online challenges may help protect other young lives and spare another family from experiencing such an unimaginable loss.

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Thank you for this informative and heart-felt article about a tragic event that, I pray, claims no more victims. I had not heard of this dangerous “Benadryl Challenge.” I have heard of things like this from time to time but this one is new to me. I don’t remember the cases in 2020. Thank you for explaining what diphenhydramine toxicity is. We use Benadryl at times but only recommended doses.
Your comment about this being “another painful reminder that dangerous online trends continue to evolve faster than many parents, educators, and even technology platforms can respond” is very important. That’s why getting this information out there is so important. I completely agree that:
“Platforms that profit from user engagement should continue investing in technologies and moderation efforts that identify and remove dangerous challenge content before it reaches vulnerable users.”
Thank you again for this article.
You’re very welcome, Chris.
Like you, I think many people either never heard about the Benadryl Challenge or have forgotten about the cases that surfaced several years ago. Unfortunately, dangerous online trends have a way of resurfacing, which is one of the reasons I wanted to explain not only what happened, but also why diphenhydramine toxicity can become so dangerous.
I’m also glad to hear you use Benadryl only as directed. When used properly, it has helped millions of people safely manage allergies for decades. The danger comes when it is intentionally misused in ways it was never intended to be.
I also appreciate what you said about raising awareness. If articles like this encourage even one parent to have an important conversation with their child or prevent one young person from participating in a dangerous online challenge, then taking the time to write them is well worth it.
Thank you again for reading the article and for taking the time to leave another thoughtful comment, Chris. I hope you have a great day ahead. 😎