How Easy to Stop Taking Benadryl to Sleep

The over-the-counter medication diphenhydramine is found in many sleeping pills intended for insomnia treatment. It is the sleep-inducing element in many medications used as sleep aids.

Since it does not require a prescription, many people who have acute insomnia use it to help initiate and maintain sleep. Due to the potential for side effects, especially among older people, other initial approaches for managing insomnia are often recommended.

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Uses

Diphenhydramine has many potential uses. It causes sleepiness, and it is sometimes recommended for short-term treatment of insomnia or acute insomnia. By definition, this is insomnia that occurs for less than three months.

It is one of the ingredients found in multiple sleep aids:

  • Tylenol PM
  • Advil PM
  • Aleve PM
  • ZzzQuil
  • Benadryl

It may help you get to sleep or stay asleep. However, it may cause sleepiness the day after taking it.

Healthcare providers do not recommend the routine or chronic use of diphenhydramine to treat insomnia.

In addition to its use as a sleep aid, diphenhydramine is often used to relieve allergies or treat allergic reactions, and it can be helpful in preventing motion sickness. It is also used to alleviate extrapyramidal symptoms, which may occur as a side effect of some medications.

How It Works

Diphenhydramine is part of a class of medications called antihistamines. It works at the level of neurotransmitters, which are the chemical messengers within the brain.

It causes its sedative effects by allowing histamine, a neurotransmitter, to build up in the synapses, which are the spaces between nerve cells. Diphenhydramine specifically blocks the uptake of histamine into nearby cells.

Diphenhydramine works both centrally within the brain as well as in peripheral nerve cells in other parts of the body. It also can suppress a cough, nausea, and uncontrolled movements called dyskinesis.

Precautions and Contraindications

Children younger than 2 years old should not use diphenhydramine. Additionally, caution should be used when this medication is used by children younger than 6 years old and by the elderly.

If you have increased intraocular pressure, such as in glaucoma, you should use caution with diphenhydramine.

Other conditions may also require caution, including:

  • Asthma
  • Bowel or bladder obstruction
  • Chronic obstructive pulmonary disease
  • Heart disease
  • High blood pressure
  • Hyperthyroidism
  • Peptic ulcer disease
  • Pneumonia
  • Prostate enlargement

If you have these conditions, it's important to discuss your risk with your healthcare provider before starting to use the medication.

If you are pregnant or breastfeeding, talk to your doctor before using any medication, supplement, or herb.

Side Effects

Some side effects that may commonly occur with diphenhydramine include:

  • Delirium (confusion)
  • Diminished coordination or cognitive function
  • Drowsiness
  • Dizziness
  • Increased intraocular pressure (similar to glaucoma)
  • Headache
  • Stomach discomfort
  • Thick lung secretions
  • Dry mouth or nose
  • Hyperactivity
  • Constipation
  • Difficulty urinating
  • Low blood pressure
  • Blurry or double vision
  • Rapid or irregular heart rate
  • Sensitivity to light
  • Sweating
  • Erectile dysfunction (impotence)

Severe

There are also risks of serious side effects. These occur more rarely.

When using diphenhydramine, serious side effects may include:

  • Anaphylaxis (severe allergic reaction including difficulty breathing)
  • Low blood cell counts (agranulocytosis, anemia, thrombocytopenia, and leukopenia)
  • Abnormal heart rhythms
  • Seizures
  • Toxic psychosis
  • Acute labyrinthitis (inner ear problems)

Warnings and Interactions

People who have certain conditions should use diphenhydramine with caution, or not at all. It is an over-the-counter medication, so the risks are thought to be slightly lower compared to prescription medications.

Diphenhydramine has the potential to interact with some other drugs, especially those that affect the brain, so you may wish to review your medications with your healthcare provider or pharmacist before use.

A Word From Verywell

If you've been experiencing chronic insomnia that occurs at least three nights per week and lasts at least two weeks, talk to your healthcare provider. You might also consider the use of cognitive behavioral therapy for insomnia (CBTI) to resolve the condition instead of medication.

You can use our Doctor Discussion Guide below to start a conversation with your healthcare provider about the most appropriate treatment approach.

Frequently Asked Questions

  • Is the sleep aid diphenhydramine the same as Benadryl?

    Yes. Diphenhydramine is the generic name for Benedryl, an antihistamine that causes drowsiness. Diphenhydramine works to promote sleep by altering neurotransmitter levels and causing sedative effects.

  • How much Benadryl should I take to sleep?

    Typically two Benedryl tablets are taken to help with insomnia. Benadryl is commonly sold in 25 mg doses to treat an allergic reaction. For sleep, 50 mg of diphenhydramine is commonly recommended.

  • Is is safe to use diphenhydramine for sleep every night?

    Diphenhydramine is a nonaddictive sleep aid. However, it is only recommended for short-term treatment of insomnia. Diphenhydramine is a type of drug known as anticholinergic. Regular use of anticholinergics is associated with an increased risk of dementia.

Insomnia Doctor Discussion Guide

Get our printable guide for your next healthcare provider's appointment to help you ask the right questions.

Doctor Discussion Guide Woman

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Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.

  1. Schroeck JL, Ford J, Conway EL, et al. Review of safety and efficacy of sleep medicines in older adults.Clin Ther. 2016;38(11):2340-2372. doi:10.1016/j.clinthera.2016.09.010

  2. Albert SM, Roth T, Toscani M, Vitiello MV, Zee P. Sleep health and appropriate use of OTC sleep aids in older adults-recommendations of a Gerontological Society of America workgroup.Gerontologist. 2017;57(2):163–170. doi:10.1093/geront/gnv139

  3. Sateia MJ, Buysse DJ, Krystal AD, Neubauer DN, Heald JL. Clinical practice guideline for the pharmacologic treatment of chronic insomnia in adults: An American Academy of Sleep Medicine clinical practice guideline.J Clin Sleep Med. 2017;13(2):307–349. doi:10.5664/jcsm.6470

  4. Food and Drug Administration. Diphenhydramine hydrochloride injection, USP label.

  5. Farzam K, O'Rourke MC. Antihistamines. In: StatPearls.

  6. NIH Toxicology Data Network. Diphenhydramine.

Additional Reading

trotterdelize.blogspot.com

Source: https://www.verywellhealth.com/diphenhydramine-for-insomnia-treatment-3015178

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