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Best Over-the-Counter Sleep Aid for Elderly Adults: What's Safer

By Candid Wellness Reviews Editorial · November 2, 2026

No over-the-counter sleep aid is named "safest" for older adults by the American Geriatrics Society or NIH. The 2023 AGS Beers Criteria says adults 65 and older should avoid diphenhydramine and doxylamine, the active ingredients in many drugstore sleep aids, including ZzzQuil, Unisom and "PM" pain relievers, because they are highly anticholinergic and linked to confusion, falls and delirium. Guidelines from the American College of Physicians and the American Academy of Sleep Medicine put CBT-I, a structured sleep therapy, first for long-lasting sleep trouble, so talk with your doctor or pharmacist before starting, stopping or changing any sleep product.

This article is for general information and is not medical advice. Talk to your doctor or pharmacist before starting, stopping or changing any medicine or supplement.

The pharmacy aisle is full of sleep aids: ZzzQuil, Unisom, store brands and "PM" pain relievers. If you are over 60, you may wonder which is safest, or whether any of them are. Here is what the American Geriatrics Society, the National Institutes of Health (NIH) and sleep guidelines say.

Why does age change the picture with sleep aids?

The National Institute on Aging (NIA) says sleep tends to become shorter and lighter with age, and older adults are more likely to take medications and have medical conditions that affect sleep.

The body handles some sleep medicines differently, too. The 2023 American Geriatrics Society (AGS) Beers Criteria, a widely used list of medicines adults 65 and older should usually avoid, says clearance of first-generation antihistamines is "reduced with advanced age." In other words, the body removes them more slowly.

Falls matter too. The CDC says about 1 in 4 adults 65 and older report falling every year, and lists medication use among fall risk factors that can be addressed. NIA adds that poor sleep is itself linked to a higher risk of falls or accidents. (Making your home safer? See walk-in showers vs. walk-in tubs.)

What is the safest sleep aid for the elderly?

None of the official sources we checked names a single over-the-counter product as "safest" for older adults. Here is what they do say:

• The AGS Beers Criteria says to avoid diphenhydramine and doxylamine, the active ingredients in many drugstore sleep aids. It also lists prescription sleeping pills such as zolpidem (a "Z-drug") and benzodiazepines as medicines to avoid, noting risks such as delirium, falls and fractures.
• The American College of Physicians (ACP) and the American Academy of Sleep Medicine (AASM) put CBT-I, a structured talk-therapy program for sleep, first for long-lasting sleep trouble.
• The NIA says to talk with your doctor before starting medication or supplements for sleep.

So, per these sources, the safer path starts with your doctor or pharmacist, not a particular box.

Is diphenhydramine safe for seniors?

Diphenhydramine (in Benadryl and many sleep aids) and doxylamine (in Unisom SleepTabs) are "first-generation" antihistamines. The 2023 AGS Beers Criteria (published in the Journal of the American Geriatrics Society; PubMed record) lists oral diphenhydramine and doxylamine with this recommendation: "Avoid." The quality of evidence is rated moderate and the strength of the recommendation is strong.

The panel's rationale, in its own words:

"Highly anticholinergic; clearance reduced with advanced age, and tolerance develops when used as hypnotic; risk of confusion, dry mouth, constipation, and other anticholinergic effects or toxicity. Cumulative exposure to anticholinergic drugs is associated with an increased risk of falls, delirium, and dementia, even in younger adults."

"Anticholinergic" means the drug blocks acetylcholine, a chemical messenger in the brain and body. "Used as hypnotic" means used to bring on sleep. The panel notes that using diphenhydramine for situations such as severe allergic reactions may be appropriate.

Other sources point the same way:

• MedlinePlus, from the National Library of Medicine, says diphenhydramine generally should not be used in older adults except to manage serious allergic reactions, and that people 65 or older should talk to their doctor about the risks and benefits.
• The AASM's 2017 guideline on sleep medicines suggests clinicians not use diphenhydramine for trouble falling or staying asleep in adults (a weak recommendation).
• The AGS Beers Criteria also warns that using more than one anticholinergic medicine at a time raises the risk of cognitive decline, delirium, and falls or fractures.

Do "PM" pain relievers and ZzzQuil contain the same ingredients?

Often, yes. According to their Drug Facts labels on DailyMed, the National Library of Medicine's label database:

• ZzzQuil Nighttime Sleep-Aid contains diphenhydramine, while Vicks ZzzQuil Ultra contains doxylamine. Same brand, different ingredient.
• Unisom SleepGels contain diphenhydramine, while Unisom SleepTabs contain doxylamine.
• Tylenol PM Extra Strength combines acetaminophen with diphenhydramine, and its label carries a liver warning for acetaminophen.
• Advil PM combines ibuprofen with diphenhydramine. Its label says the chance of severe stomach bleeding from the NSAID is higher if you "are age 60 or older."

The FDA notes that many over-the-counter medicines may have similar brand names with different active ingredients, so the name on the front of the box is not enough.

What about melatonin?

Melatonin is not an antihistamine and is not on the Beers list. NCCIH says short-term use appears safe for most people but long-term safety information is lacking, and that melatonin may stay active longer in older people and cause daytime drowsiness. The AASM's 2017 guideline on sleep medicines suggests clinicians not use melatonin for trouble falling or staying asleep in adults (a weak recommendation). We cover the studies in detail in Melatonin for People Over 60: What the Research Says.

Are natural sleep aids better for older adults?

"Natural" is not the same as proven or risk-free. The National Center for Complementary and Integrative Health (NCCIH) says, "Keep in mind that 'natural' does not always mean safe." Here is what NIH sources say about common ingredients:

• Valerian: Trial results have been inconsistent, and the AASM's 2017 guideline suggested that clinicians not use it for long-lasting sleep trouble (a weak recommendation). NCCIH says long-term safety is unknown and it should not be taken with alcohol or sedatives.
• Magnesium: NCCIH says there is very little research on magnesium for sleep. A 2021 review of 3 studies (151 people) suggested it may help older adults fall asleep faster, but the reviewers called the studies low quality. The NIH Office of Dietary Supplements says magnesium supplements can interact with some medicines, such as bisphosphonates for osteoporosis and some antibiotics.
• Chamomile: NCCIH says there is no conclusive evidence from clinical trials on whether it helps with sleep. Its chamomile page notes reported interactions with warfarin (a blood thinner) and allergic reactions in people allergic to ragweed and related plants.
• L-theanine: We did not find an NCCIH or Office of Dietary Supplements fact sheet on L-theanine for sleep, so we cannot summarize an official NIH view.

NCCIH also notes that supplements are not approved by the FDA before they are sold. Tell your doctor and pharmacist about any you use.

What do guidelines put first for long-lasting sleep trouble?

The American College of Physicians guideline, "Management of Chronic Insomnia Disorder in Adults" (2016), recommends that all adults with chronic sleep trouble receive CBT-I as the first approach (a strong recommendation). The AASM's 2021 guideline on behavioral approaches gives CBT-I its one strong recommendation.

According to NIH's National Heart, Lung, and Blood Institute (NHLBI), CBT-I is a 6- to 8-week plan done with a doctor, nurse or therapist, in person, by phone or online. The AGS's Health in Aging site adds that self-guided apps and websites can teach it too.

Everyday habits matter too. The NIA suggests:

• Going to bed and getting up at the same time each day, even on weekends
• A relaxing bedtime routine and a comfortable bedroom
• Regular exercise, but not within three hours of bedtime
• Avoiding naps in the late afternoon or evening, caffeine late in the day, and alcohol

How can you spot hidden diphenhydramine or doxylamine on a label?

1. Turn the box over and find the "Drug Facts" panel. The FDA explains that the "Active ingredient" section lists the substances that cause the product's intended effect.
2. Look for "diphenhydramine" (HCl or citrate) or "doxylamine succinate." Next to it, the "Purpose" line on sleep products usually reads "Nighttime sleep-aid."
3. Check "PM" and "night" versions of pain relievers, which may combine one of these with another drug.
4. Do not double up. Diphenhydramine labels, such as ZzzQuil's, say not to use it with any other product containing diphenhydramine, "even one used on skin."
5. Ask your pharmacist. Bring a list of every prescription, over-the-counter medicine and supplement you take. Most labels we checked say to ask a doctor or pharmacist first if you take sedatives or tranquilizers.

If you already use one of these products, the American Geriatrics Society advises: "Don't stop taking a medication without first checking with the provider." It also notes that a medicine on the Beers list "still may be a reasonable choice for you." Talk to your doctor or pharmacist before stopping or changing any medicine.

When should you see a doctor about sleep?

• When sleeplessness lasts more than 2 weeks. The Drug Facts labels for ZzzQuil, Unisom and Tylenol PM all say to stop use and ask a doctor if sleeplessness lasts continuously for more than 2 weeks, because it may be a sign of a serious underlying medical illness.
• When you are always sleepy or find it hard to get enough sleep at night, according to NIA.
• When you notice possible signs of sleep apnea. NHLBI lists breathing that starts and stops, frequent loud snoring, gasping for air, daytime sleepiness, and waking often at night to urinate. NIA warns that undiagnosed sleep apnea can lead to serious health problems, including heart attack.
• When dizziness or drowsiness is severe or does not go away. MedlinePlus lists both as diphenhydramine side effects and says to tell your doctor if they are severe or do not go away.

The bottom line

Many drugstore sleep aids rely on diphenhydramine or doxylamine, which the American Geriatrics Society says adults 65 and older should avoid. "Natural" options have limited or inconsistent evidence, and guidelines put CBT-I and good sleep habits first. Read every Drug Facts label and ask your doctor or pharmacist before you start, stop or change anything. For more on product types, see our guide to over-the-counter sleep aids.