Can You Get Addicted to Benadryl?

Benadryl is sold over the counter, sits in millions of medicine cabinets, and is often treated as harmless. However, its active ingredient, diphenhydramine, affects the brain and can be dangerous when it is taken too often, in excessive amounts, or for reasons other than its intended use.

So, can you get addicted to Benadryl? Yes, Benadryl misuse can become compulsive, and chronic high-dose use has been associated with tolerance, physical dependence, and withdrawal. That does not mean someone who occasionally takes a label-directed dose for allergies is addicted. The concern is a repeated pattern: needing more to get the same effect, using it to feel altered or escape distress, being unable to cut back, or continuing despite harm.

Benadryl Addiction at a Glance

What Is Benadryl, and Why Do People Misuse It?

Benadryl is a brand name commonly associated with diphenhydramine. Diphenhydramine is a first-generation antihistamine used in allergy products and some over-the-counter sleep and nighttime medicines. It blocks histamine, which helps reduce symptoms such as sneezing, itching, and a runny nose. Because it readily affects the central nervous system, it can also cause significant drowsiness.

Some people begin using Benadryl every night because they cannot sleep. Others take more than directed in search of relaxation, emotional escape, euphoria, or hallucinations. The medication may also be misused because it is inexpensive, legal, and easy to obtain.

At high amounts, however, Benadryl does not produce a predictable psychedelic experience. It can cause anticholinergic delirium—a toxic state involving confusion, agitation, memory loss, disorientation, and hallucinations that may feel completely real. A person in this state may not understand that they are in danger or be capable of asking for help.

Benadryl Misuse Is Rising Among Teens

This is not only a leftover concern from the 2020 “Benadryl Challenge.” In a health advisory updated July 9, 2026, America’s Poison Centers reported that diphenhydramine cases among teens ages 13 to 19 increased from 10,068 in 2024 to 13,284 in 2025, a 31.9% increase. The organization reported 7,292 diphenhydramine-only teen cases through the first half of 2026, nearly twice the number reported during the same period in 2025.

The advisory also found that 13.7% of diphenhydramine-only teen cases in 2026 were linked to intentional abuse, compared with 7.3% in 2020. These numbers include reports made to poison centers and do not necessarily capture every instance of misuse.

Parents should store diphenhydramine and other medications out of sight and reach, pay attention to unexpectedly empty packages or repeated purchases, and speak directly with teens about medication misuse without turning the conversation into an interrogation. If an ingestion may have occurred, contact Poison Control immediately rather than waiting for symptoms.

Benadryl Tolerance, Dependence, and Addiction Are Not the Same Thing

These terms are related, but they describe different problems.

Tolerance

Tolerance means the same amount no longer produces the same effect. A small controlled study of repeated diphenhydramine use found that tolerance to its daytime sedating effects developed rapidly under the study’s particular dosing schedule. The study did not prove that everyone who takes Benadryl will become tolerant or addicted. It did show why a person relying on diphenhydramine for sleep may feel tempted to increase the amount when the original dose stops making them drowsy.

Physical Dependence

Physical dependence means the body has adapted to repeated exposure and reacts when the medication is reduced or stopped. Published case reports describe withdrawal after chronic, heavy diphenhydramine use. Reported features have included sweating, rapid heart rate, increased salivation, tremor, restlessness, and changes in mental status.

The evidence on diphenhydramine withdrawal is much more limited than the evidence for alcohol, opioids, or benzodiazepines. There is no dependable one-size-fits-all withdrawal timeline. Someone using large amounts daily should therefore speak with a medical professional before abruptly stopping or attempting an online taper.

Addiction or a Substance Use Disorder

Addiction refers to compulsive or difficult-to-control substance use despite harmful consequences. A person can be physically dependent without being addicted, and a person can have a serious compulsive pattern even if dramatic physical withdrawal is absent.

With Benadryl, the most useful question is not simply, “Do I take it every day?” It is, “What is this pattern doing to my health, choices, and ability to stop?”

Signs That Benadryl Use May Be Becoming a Problem

Possible warning signs include:

• Taking more than the label directs or taking doses closer together
• Needing increasing amounts to become sleepy or feel an effect
• Using Benadryl to get high, hallucinate, numb emotions, or escape stress
• Feeling unable to sleep or function without it
• Repeatedly trying to cut back and returning to the same pattern
• Hiding use, buying from multiple stores, or keeping large supplies
• Experiencing cravings or spending significant time thinking about the next dose
• Continuing despite memory problems, daytime sedation, falls, driving impairment, relationship conflict, or missed responsibilities
• Combining diphenhydramine with alcohol, sedatives, tranquilizers, or other substances
• Experiencing sweating, agitation, tremor, a racing heart, or marked sleep disruption after reducing or stopping heavy use

Daily use alone does not establish addiction, but it is a reason to review the medication with a physician or pharmacist—especially when it is being used as a long-term sleep solution.

Is It Safe to Take Benadryl Every Night for Sleep?

Benadryl may make someone sleepy, but sedation is not the same as healthy, restorative sleep or effective treatment for chronic insomnia. The American Academy of Sleep Medicine’s clinical guideline suggests that clinicians not use diphenhydramine to treat sleep-onset or sleep-maintenance insomnia in adults.

Regular use can also create a frustrating cycle: the sedating effect becomes less reliable, the person increases the amount, and anxiety about sleeping without it grows. Daytime drowsiness, slowed reaction time, impaired coordination, and anticholinergic side effects may continue to create risks even when the medication no longer feels as effective.

If sleep is the reason for repeated Benadryl use, a clinical assessment can look for underlying causes such as anxiety, depression, trauma, sleep apnea, restless legs syndrome, medication effects, substance use, or an inconsistent sleep schedule. Cognitive behavioral therapy for insomnia and other targeted care may address the underlying problem without relying on escalating doses of an antihistamine.

What Does a Benadryl Overdose Look Like?

Diphenhydramine poisoning can affect both the brain and the heart. Possible signs include:

• Extreme drowsiness or inability to awaken
• Severe confusion, agitation, or delirium
• Hallucinations or behavior that is markedly out of character
• Dry mouth, flushed skin, or enlarged pupils
• Rapid heartbeat or an abnormal heart rhythm
• Nausea or vomiting
• Difficulty urinating
• Overheating
• Seizures
• Loss of consciousness or coma

The U.S. Food and Drug Administration warns that taking more than the recommended amount can cause serious heart problems, seizures, coma, or death. Some nighttime and cold products combine diphenhydramine with other active ingredients, which can create additional poisoning risks. Do not rely on a person’s symptoms, body size, or the number of pills to decide that an ingestion is safe.

If someone may have taken too much diphenhydramine, call Poison Control at 1-800-222-1222 or use PoisonHelp.org. Call 911 immediately if the person has collapsed, is having a seizure, has trouble breathing, cannot be awakened, or is hallucinating after taking the drug. Do not wait for the symptoms to become severe.

How Is Problematic Benadryl Use Treated?

Treatment should match the person’s actual pattern and risks. Someone who has been taking a label-directed dose for sleep may need a medication review and better insomnia care. A person using very high amounts, experiencing withdrawal symptoms, combining substances, or repeatedly losing control may need medical stabilization and structured addiction treatment.

A plan may include:

• A medical evaluation for intoxication, withdrawal, medication interactions, and other health concerns
• A clinician-directed discontinuation plan when physical dependence is suspected
• Assessment and treatment of insomnia, anxiety, depression, trauma, or other reasons the use began
• Individual and group therapy to identify triggers and build healthier coping skills
• Relapse-prevention planning and family support
• Treatment for alcohol, opioid, benzodiazepine, kratom, or other substance use occurring alongside Benadryl misuse
• A level-of-care assessment to determine whether outpatient treatment, intensive outpatient care, partial hospitalization, medical detoxification, or residential care is appropriate

There is no shame in needing help with a medication sold over the counter. Easy availability can make a harmful pattern harder to recognize—not less legitimate.

Benadryl Misuse Treatment in Maine

If diphenhydramine misuse has become part of a broader substance use pattern, Portland Treatment can help you understand the next appropriate step. We are a Maine DHHS-licensed outpatient substance use and co-occurring mental health treatment provider in Biddeford, Maine.

Portland Treatment directly provides a partial hospitalization program, intensive outpatient treatment, outpatient services, sober living, and support for medication-assisted treatment continuation. When someone needs medical detoxification or residential treatment that we do not provide onsite, we can coordinate an appropriate referral.

Call Portland Treatment 24/7 at 855-449-7674 for a confidential conversation about your needs, available treatment options, and insurance verification.

Frequently Asked Questions

Can Normal Benadryl Use Cause Addiction?

Occasional use as directed is unlikely to produce an addiction. Risk rises when the medication is used frequently, in increasing amounts, to become intoxicated, or despite clear physical, emotional, or social harm.

Is Benadryl Withdrawal Real?

Yes. Physical dependence and withdrawal have been documented, especially after chronic high-dose use. Because most of the clinical evidence comes from case reports, the symptoms and timeline cannot be predicted precisely for every person.

Can Benadryl Make You High?

Some people report sedation or euphoria, but larger amounts can rapidly produce toxic delirium, terrifying hallucinations, dangerous heart rhythms, seizures, coma, or death. A Benadryl “high” is not predictable or safe.

Is Taking Benadryl Every Night an Addiction?

Not automatically. However, nightly use—especially with dose escalation, cravings, unsuccessful efforts to stop, or continued use despite harm—deserves professional evaluation. Chronic insomnia should also be assessed rather than repeatedly masked with an antihistamine.

How Long Does Benadryl Withdrawal Last?

There is no well-established withdrawal timeline that applies to everyone. Duration and severity can depend on the amount used, frequency, length of use, other medications or substances, and the person’s health. A medical professional should guide discontinuation after heavy or prolonged use.

Should Someone Go to Detox for Benadryl?

Not everyone needs medical detoxification. It may be appropriate when there has been heavy daily use, severe withdrawal, repeated overdose, significant medical or psychiatric symptoms, or use with other substances. A level-of-care assessment can determine the safest setting.

What If Benadryl Was Taken as an Act of Self-Harm?

Treat it as an emergency. Call 911 or Poison Control at 1-800-222-1222 immediately. If there has not been an ingestion but someone is thinking about suicide or self-harm, call or text 988 for the Suicide & Crisis Lifeline.

This article is for educational purposes and is not a substitute for medical advice, diagnosis, or emergency care.

Sources

America’s Poison Centers. (2026, July 9). Health advisory: Increase in diphenhydramine abuse among teens reported to U.S. poison centers. https://poisoncenters.org/news-alerts/13642335

Huynh, D. A., Abbas, M., & Dabaja, A. (2023). Diphenhydramine toxicity. StatPearls Publishing. https://www.ncbi.nlm.nih.gov/books/NBK557578/

National Institute on Drug Abuse. (2018). Understanding drug use and addiction. https://nida.nih.gov/publications/drugfacts/understanding-drug-use-addiction

Nemanich, A., Liebelt, E., & Sabbatini, A. K. (2021). Increased rates of diphenhydramine overdose, abuse, and misuse in the United States, 2005–2016. Clinical Toxicology, 59(11), 1002–1008. https://pubmed.ncbi.nlm.nih.gov/33688782/

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U.S. Food and Drug Administration. (2020, September 24). FDA warns about serious problems with high doses of the allergy medicine diphenhydramine (Benadryl). https://www.fda.gov/drugs/drug-safety-and-availability/fda-warns-about-serious-problems-high-doses-allergy-medicine-diphenhydramine-benadryl