The Best Over The Counter Sleep Aids and Natural Sleeping Pills 2023 (Expert Reviewed)

Trouble sleeping? Here is the list of the best OTC sleep aids, a considered option to help treat insomnia and other sleep problems. If you think you should take sleep supplements, here’s what you need to know.

Disclosure: Every product is independently selected by our editors. Things you buy through our links may earn Health Insiders a commission. Learn more about our review process here.
Sleeping Pills and Natural Sleep Aids

Are sleep aids safe? What is the most effective natural sleep aid? Observe these caveats if you use over the counter sleeping aids or natural sleeping pills to help you sleep. (Image Credit: Shutterstock)

Each product we feature has been independently selected and reviewed by our editorial team. If you make a purchase using the links included, we may earn a commission.

What are Over the Counter Sleep Aids?

Sleep aids, also known as sleeping pills, are medications or supplements that help a person sleep. You don’t need a prescription in order to buy over-the-counter (OTC) sleeping pills.

OTC sleep aids use antihistamines (like doxylamine succinate) as their primary ingredient. Antihistamines work by blocking certain brain chemicals, which make you feel sleepy. There are also natural sleeping aids that use herbs for sleep or other natural elements.

Let’s explore when to use sleeping pills and the popular options that are available.

When to Use OTC Sleeping Pills?

Many people take OTC sleeping pills to get quality sleep, but many people may not need them. Exercising, avoiding alcohol and other healthy behaviors can often improve sleep[1] and prevent insomnia.

If lifestyle changes don’t work or you’re still experiencing poor sleep, an OTC may be a good solution. They may help you adopt better sleeping habits.

Sleeping pills are generally safe for short-term use. Yet, studies[2] of OTC sleep aids don’t have reliable results on both how well they work and how safe they are.

Active Ingredients To Look For In Sleep Aids

There are some of the active ingredients to look at while choosing the best sleep aids.

Melatonin: Melatonin naturally exists as a sleep hormone and is made in the body. One of the factors that influence its production is time. That is, its levels notably increase during the evening and subside as it approaches the morning hours.

One review article published in the PLOS ONE Journal concluded that melatonin has a positive effect on sleep quality and that it impacts sleep-onset latency, and improves sleep hours. The study also indicates that it made the users feel more refreshed after sleep.

L-Theanine: This ingredient occurs naturally in the body in form of amino acids. It is mostly featured in anti-anxiety support supplements because of its calming effects.

Research published in the Pharmaceutical Biology Journal checked into the effectiveness of GABA and L-theanine formula on sleep in subjects. The conclusion hints that sleep latency improved by 14.9% and sleep increased by above 24.5% across the study participants.

Gama Aminobutyric Acid: Shortened to GABA acts as a neurotransmitter in the brain. It is among the highly essential amino acids that support brain function. A research report appearing in the Journal of Clinical Neurology records that in a double-blind trial, the administration of 300 mg of this ingredient daily was done, it improved sleep quality and did not cause any unwanted results.

Chamomile: Most top-rated sleep support products and best sleeping pills list this ingredient as being their key component. Besides, the sedative properties of chamomile have made it a widely used herb and remedy for different conditions.

In the Journal of Education and Health Promotion, one study highlights that the oral administration of this herb promotes sleep quality in terms of time and consistency.

Tryptophan: This ingredient works indirectly in that it actively promotes the synthesis of key support chemicals in the body. In precise, tryptophan is an amino acid that aids heighten the production of serotonin and melatonin and serotonin.

A study shared in the Journal of Medicine points out that this component may ease sleep disorders temporarily.

Eucalyptus Leaf Oil: This is an essential oil that for centuries has been used in aromatherapy because of its stress-relieving benefits. It is said to improve sleep, support good mood, lower depression, and increase calmness.

A randomized trial study shared in the European Journal of Integrative Medicine supports the sleep support benefits associated with this leaf oil.

Tips For Choosing The Best Sleep Aids

First, identify what is affecting your sleep. There are lots of factors that may be preventing you from getting a good night’s rest. Since OTC sleep aids are best for short-term use, figuring out what kind of sleep problems you have will help you decide if they are right for you.

Then, talk with your healthcare provider. They can make sure the sleep supplement won’t interact with any other medications you are taking. Always ask your provider if you are pregnant or breastfeeding before choosing a supplement.

Remember to read the label and look for any precautions. Some supplements may have limitations if you have medical conditions, such as diabetes, kidney disease, or cancer. Keep in mind that sleeping aids may also affect other areas of your life, like driving.

Review of The Best Sleep Aids 2023

The following sleep aids are highly popular in the market. They have commonly used sleeping pills with reviews from buyers.

Sleep Support Plus

Sleep Support PlusBuy on Official Website

*All the prices listed here are as they appear on their websites and are subject to change.

Quick Facts & Specs

Sleep Support Plus
Sleep Support Plus is an exclusive sleep-supporting supplement that provides a relaxing feeling.

  • Form:Pills
  • Type:Supplement
  • Benefit:Relieves from insomnia
  • Brand:VitaPost
  • Active Ingredients:Tryptophan, Melatonin, Goji Berry, Lemon Balm, Chamomile, Valerian
  • Price:$27.95*

Sleep Support Plus Pros & Cons

Pros

  • These insomnia pills claim to help you fall asleep faster and stay asleep all night.
  • The supplement may not be addictive.
  • The product belongs to the American Herbal Products Association.
  • This supplement has all natural ingredients, is gluten-free, and is non-GMO.

Cons

  • For some people the recommended dose is too powerful, resulting in side effects. Natrium Health suggests reducing the dose to one pill if any side effects occur.

Results: This formula offers a synergistic variety of active herbs, minerals, and vitamins; notably including l-theanine, melatonin and valerian root. Sleep Support Plus reviews are positive and you can definitely consider buying it.


VitalSleep

Vital SleepBuy on Official Website

*All the prices listed here are as they appear on their websites and are subject to change.

Quick Facts & Specs

Vital Sleep
VitalSleep is an anti-snoring mouthpiece that is designed to help end your snoring days.

  • Form:Anti-Snoring Device
  • Type:Device
  • Benefit:Helps in stopping snoring of the user.
  • Brand:VitalSleep
  • Price:$69.95*

VitalSleep Pros & Cons

Pros

  • It is made of latex and is BPA-free.
  • The product claims to improve breathing by allowing better airflow.
  • It works to solve the root cause of snoring.
  • The self-mold feature allows a personalized and secure fit.

Cons

  • The hex key used for adjusting may be cumbersome.

Results: The snoring is effectively gone for maximum customers and they have said that VitalSleep has worked miraculously for them. Additionally, this natural sleep aid always comes under the list of top 10 sleeping pills and could be considered as one of the safe natural sleep remedies.


Onnit New Mood

Onnit New MoodBuy on Official Website

*All the prices listed here are as they appear on their websites and are subject to change.

Quick Facts & Specs

Onnit New Mood

Onnit New Mood is an organic mood supplement which promises to elevate positive mood, lower stress, and anxiety, and promote a calm and relaxed demeanor.

  • Form:Capsule
  • Type:Supplement
  • Benefit:Decrease stress and anxiety, improves sleep quality.
  • Brand:Onnit
  • Active Ingredients:5-HTP, Tryptophan, Vitamins B3 and B6, Chamomile, Valarian Root, Jujube Seed, Lemon Balm
  • Price:$29.95*

Onnit New Mood Pros & Cons

Pros

  • Onnit New Mood supports heart and nervous system health.
  • It can fight stress and induce calmness.
  • It can eliminate daily stressors and promote a better mood balance.
  • It’s free of gluten, dairy, soy, nuts, and caffeine.

Cons

  • It could make you somewhat drowsy.

Results: Onnit New Mood is an all natural sleep aid that contains a number of ingredients that promote a relaxed, calm feeling. It also raises levels of serotonin and other neurotransmitters, which can boost good mood and decrease feelings of anxiety.


Som Sleep

Som SleepBuy on Official Website

*All the prices listed here are as they appear on their websites and are subject to change.

Quick Facts & Specs

Som Sleep
Som Sleep is a sleep drink that’s engineered to help you fall asleep faster and sleep better throughout the night.

  • Form:Liquid
  • Type:Supplement Drink
  • Benefit:Helps in acquiring sound sleep all night
  • Brand:Som Friends Inc.
  • Active Ingredients:L-theanine, GABA, Melatonin
  • Price:$29.99*

Som Sleep Pros & Cons

Pros

  • This natural sleep aid could help you to sleep faster.
  • It could give you a great night’s sleep.
  • It can help regulate your sleep cycle.
  • This sleeping pill can decrease stress and anxiety.

Cons

  • Some people prefer a supplement to a drink.

Results: Som Sleep nighttime sleep aid formula is packed with all the right ingredients that address sleep from three different angles, providing a more comprehensive solution. This natural sleep remedy also has improved the sleep quality of people who have trouble falling asleep and provided them with peace of mind and relaxation.


ActivatedYou AdrenaLife

ActivatedYou AdrenaLifeBuy on Official Website

*All the prices listed here are as they appear on their websites and are subject to change.

Quick Facts & Specs

ActivatedYou AdrenaLife
ActivatedYou AdrenaLife is formulated to combat some of the most frustrating, overwhelming symptoms of stress and to help you experience mind-body balance.

  • Form:Capsules
  • Type:Supplement
  • Benefit:Reduces stress, increases energy and focus, promotes calmness and relaxation
  • Brand:Activated You
  • Active Ingredients:Vitamin C, niacin, folate, magnesium, vitamin B12
  • Price:$69.95*

AdrenaLife Pros & Cons

Pros

  • It may promote restful sleep and focused energy throughout the day.
  • Boosts energy and mood.
  • It may combat the overwhelming issues related to stress.
  • Enhances the feelings of calm, relaxation, and peace.

Cons

  • Individual results can vary.

Results: Some people prefer to take AdrenaLife, one of the natural sleep aids in the morning because the formula includes Taurine, which helps keep them calm throughout the day, while others report they like taking it before bed because it calms their mind and helps them sleep better.


Snoran Plus

Snoran PlusBuy on Official Website

*All the prices listed here are as they appear on their websites and are subject to change.

Quick Facts & Specs

Snoran Plus
Som Sleep is a sleep drink that’s engineered to help you fall asleep faster and sleep better throughout the night.

  • Form:Capsules
  • Type:Supplement
  • Benefit:Helps to combat snoring problems and provides deep and relaxing sleep.
  • Brand:Snoran Plus
  • Active Ingredients:Peppermint leaf extract, lemon balm leaf extract, powdered thyme, marshmallow root extract
  • Price:$49.99*

Snoran Plus Pros & Cons

Pros

  • It improves the flow of air through your respiratory tract for reduced snoring.
  • It may promote quality sleep.
  • It reduces irritation in the throat and improves the functioning of airways.
  • It soothes the throat and reduces dryness and irritation.

Cons

  • The product is only available online.

Results: Snoran Plus is one of the best sleep supplements designed for women and men who are looking for support in the fight against snoring. According to the reviews, Snoran Plus is the best method against snoring and for better sleep and regular consumption has made it easier to fall asleep and better recovery.


ZzzQuil

ZzzQuilBuy on Amazon

*All the prices listed here are as they appear on their websites and are subject to change.

Quick Facts & Specs

ZzzQuil
ZzzQuil is an OTC that has an antihistamine in it.

  • Form:Pills
  • Type:Supplement
  • Benefit:Helps fall asleep faster, enhances sound sleep, provides sufficient night sleep
  • Brand:ZzzQuil
  • Active Ingredients:Melatonin, Ashwagandha, Valerian (Valeriana officinalis L.) root extract, Lemon Balm (Melissa officinalis) leaf extract
  • Price:$10.99*

ZzzQuil Pros & Cons

Pros

  • It’s used to reduce the time it takes you to fall asleep and to help you stay asleep.
  • You take it when you need it, so you don’t have to follow a specific schedule.

Cons

  • It can cause blurred vision, affecting your ability to drive or do other daily activities.
  • Many people report having strange dreams when using ZzzQuil.

Results: There are no any peer-reviewed studies on ZzzQuil that can show the effectiveness of otc sleep aids. Yet, many people comment that it works.


Natrol Melatonin

Natrol MelatoninBuy on Amazon

*All the prices listed here are as they appear on their websites and are subject to change.

Quick Facts & Specs

Natrol Melatonin
Natrol Melatonin is an OTC that uses Melatonin.

  • Form:Pills
  • Type:Supplement
  • Benefit:Promotes a more restful, relaxing sleep and better overall health
  • Brand:Natrol
  • Active Ingredients:Coconut Oil, Pectin, Sodium citrate, Organic tapioca syrup, Organic cane sugar
  • Price:$14.99*

Natrol Melatonin Pros & Cons

Pros

  • This natural melatonin supplement can help you fall asleep faster and stay asleep longer.
  • The gummies are non-GMO, gelatin-free, and vegetarian.

Cons

  • There are no consumer reviews on their website.
  • Melatonin doesn’t work for everyone.

Results: Melatonin supplements have been heavily researched in peer-reviewed studies with mixed results. Furthermore, Natrol Melatonin may not be the best over the counter sleep aid, as it has got some mixed reviews and reports.


Olly Sleep

olly-sleepBuy on Amazon

*All the prices listed here are as they appear on their websites and are subject to change.

Quick Facts & Specs

Olly Sleep
OLLY Sleep delivers a unique blend of active ingredients that work together to calm your mind and promote restful sleep so you wake up feeling refreshed.

  • Form:Gummies
  • Type:Supplement
  • Benefit:Promotes faster and higher quality sleep, strengthens the immune system, balances sleep cycle
  • Brand:Olly
  • Active Ingredients:Lemon Balm, L-Theanine, Chamomile, Passion Flower, Melatonin, Coconut, Pectin
  • Price:$13.99*

Olly Sleep Pros & Cons

Pros

  • It can decrease stress and anxiety.
  • This product can calm and relax your mind.
  • Olly sleep aid helps balance your sleep cycle.

Cons

  • There is only one flavor, and some users may not enjoy it.
  • Olly sleep vitamins would be more potent with additional ingredients.
  • High demand may sometimes lead to low stock.

Results: Reports show that Olly sleeping pill has worked for users. Customer reviews have shown that vitamins for sleep boost the natural sleep hormone and encourage relaxation of the mind and body.


Avinol PM

Avinol PMBuy on Amazon

*All the prices listed here are as they appear on their websites and are subject to change.

Quick Facts & Specs

Avinol PM
Avinol PM nighttime sleep aid, claims to help consumers with jet lag, stress, irregular work schedules, insomnia and chronic fatigue.

  • Form:Pills
  • Type:Supplement
  • Benefit:Promote deep sleep and stabilizes body’s sleep cycle
  • Brand:Avinol PM
  • Active Ingredients:Melatonin, Calcium, Magnesium, GABA, Hops Flower Powder
  • Price:$69.98*

Avinol PM Pros & Cons

Pros

  • It comes in the form of quick-dissolvable tablets.
  • Contains melatonin and other herbs that may help reduce anxiety and improve sleep quality.

Cons

  • Ingredients within Avinol PM all have minimum dosing requirements, which may not be enough to be effective.
  • There is no direct website for this sleeping aid.

Results: Currently there are no peer-reviewed studies using Avinol-PM and many of the consumer reviews are mixed.


Unisom

UnisomBuy on Amazon

*All the prices listed here are as they appear on their websites and are subject to change.

Quick Facts & Specs

Unisom
Reported as the #1 Pharmacist recommended OTC Sleep Aid Brand by Pharmacy Times Survey in 2015.

  • Form:Pills
  • Type:Supplement
  • Benefit:Helps fall asleep faster and stay asleep longer
  • Brand:Unisom
  • Active Ingredients:5mg Melatonin
  • Price:$38.99*

Unisom Pros & Cons

Pros

  • The product has histamine and fast-acting sleep ingredients in them.
  • Unisom sleep aid comes in easy-to-swallow gels, tablets, little capsules, and dissolvable tablets.
  • Provides references to the product’s statements and claims.

Cons

  • You should not take this if you have glaucoma, asthma, or other chronic lung diseases, or an enlarged prostate.
  • The primary ingredient is an antihistamine (like doxylamine succinate), which slows down breast milk production. Individuals breastfeeding should not use this medication.

Results: The SleepGels have a 3.7-star rating with over 550 reviews on their website. But many of the reviews report it helped them fall asleep and they woke up feeling refreshed, however, few reviews say that there is better best otc sleep aid on the market.


HUM Beauty zzZz

HUM Beauty zzZzBuy on Amazon

*All the prices listed here are as they appear on their websites and are subject to change.

Quick Facts & Specs

HUM Beauty zzZz
HUM Beauty zzZz formula is formulated with natural melatonin + vitamin B6 which is known to help adjust the internal body clock so you can fall asleep easier and sleep more soundly for better daytime alertness.

  • Form:Capsules
  • Type:Supplement
  • Benefit:Improves sleep quality, promotes more restful sleep
  • Brand:HUM Nutrition
  • Active Ingredients:Magnesium
  • Price:$10.00*

HUM Beauty zzZz Pros & Cons

Pros

  • Helps reduce the time it takes to fall asleep.
  • It may support a deeper, more restful sleep.

Cons

  • The ingredients are limited.
  • The product has got mixed reviews.

Results: Customers claim that all the active ingredients in HUM Beauty zzZz are natural, gentle, and non-habit forming. You can take it for as long as you feel necessary and stop anytime. But there might be some potential side effects that are associated with these types of over the counter sleeping pills.


Natural Vitality Calm Magnesium Supplement

Natural Vitality CalmBuy on Amazon

*All the prices listed here are as they appear on their websites and are subject to change.

Quick Facts & Specs

Natural Vitality Calm Magnesium Supplement
Natural Vitality Calm unflavored anti-stress drink mix promotes healthy magnesium levels to support stress management for a healthy body.

  • Form:Powder
  • Type:Drink supplement
  • Benefit:Supports stress relief, promotes balanced mood, enhances restful sleep and more relaxed muscles
  • Brand:Natural Vitality Calm
  • Active Ingredients:Magnesium carbonate
  • Price:$27.97*

Natural Vitality Calm Magnesium Supplement & Cons

Pros

  • Helps dissolve tension and supports a healthy response to stress.
  • It may help give you a calming and relaxing experience.

Cons

  • Most people prefer capsule supplements rather than drink supplements.
  • Many customers have experienced anxiety after taking the product.

Results: One of the customer’s experiences with the Calm sleep aid said, “When mixed with warm it turns into magnesium citrate, which is used as a bowel preparation in large doses. It also provides no benefit if it doesn’t fizz up when mixed in warm water and your wasting your money, has a pleasant taste.”


Thorne Melaton-3

Thorne Melaton-3Buy on Amazon

*All the prices listed here are as they appear on their websites and are subject to change.

Quick Facts & Specs

Thorne Melaton-3
Thorne Melaton-3 supports restful sleep, helps balance circadian rhythms, and provides benefits for shift workers, those with jet lag, and individuals with an age-related decrease in melatonin.

  • Form:Capsules
  • Type:Supplement
  • Benefit:Provides sleep support, promotes the sleep efficacy
  • Brand:Thorne
  • Active Ingredients:Melatonin
  • Price:$13.00*

Thorne Melatonin-3 Pros & Cons

Pros

  • It may help maintain normal circadian rhythms.
  • Supports restful sleep patterns.

Cons

  • The supplement only contains one main ingredient.
  • This melatonin supplement may interact with blood-thinning medications.

Results: Thorne Melaton-3 has sleep-promoting efficacy by decreasing the amount of time needed to fall asleep, by promoting the ability to stay asleep but sometimes this sleep supplement gives hard time waking up to some users, as it leaves the after-effects.


Sleep Aids is Not a Magic Cure

OTC sleep aids are not a magic cure. They may be effective for an occasional sleepless night. Yet, with long-term use, many people develop a tolerance for them. So the longer you take them, the less likely they will help with sleep issues.

Many people also report feeling groggy the next day. While others report other side effects, such as dry mouth, blurred vision, or daytime drowsiness. Stop using OTC sleeping pills if you have any side effects, and try the options of natural sleep remedies.

Keep in mind that OTC supplements are not reviewed and regulated by the FDA. There is no standardization in terms of dosage or formulas. This doesn’t mean they don’t work. It just means it’s important to buy from reputable sources and to review the labels.

Best Sleep Aids – Frequently Asked Questions

Q. What is the difference between OTC sleeping pills and prescribed sleeping pills?

A. A primary difference is that prescribed sleeping pills are approved by the FDA, while OTC sleeping pills are not. OTC sleep supplements typically contain natural ingredients. Prescription sleeping pills tend to have chemicals.

Q. Are sleeping pills or sleep aids right for you?

A. OTC sleep aids may be right for you if you have short-term difficulty sleeping and if you’ve talked with your physician to ensure it is safe for you to take.

Q: Are Sleep Aids Safe?

A: All natural Sleep aids are generally safe, but they do have a few known negative effects that may affect your health.

Note: OTC antihistamines include diphenhydramine and doxylamine succinate (also sold and bought over the counter). While they are often used as sleep aids, it is not their primary use. There is not a substantial amount of evidence that they work effectively as sleep aids, and they may involve adverse after-effects.

Always speak with your doctor before adding any medication or supplement to your regimen.

Q. Can sleeping pills treat insomnia?

A. Sleeping pills do work and can be an effective treatment for insomnia. There are side effects and it’s important to take it as recommended.

Q. How long do OTC sleeping pills take to work?

A. Once you’ve taken a sleeping pill, it’s important to plan on going to bed shortly after. Many OTC sleep supplements recommend taking 15-20 minutes before bedtime. It’s also helpful to stop doing activities after taking the supplement.

Q. When should I take a sleeping pill?

A. If you’re planning on taking a sleeping pill, take it at least eight hours before you want to wake up. If you take it sooner than that, you may wake up feeling groggy.

Q: What is the most popular OTC sleep aid?

A: Melatonin is chosen as the most popular OTC Sleep aid as per the best sleep aids reviews and research. But if Melatonin doesn’t seem to work for you, consider trying over the counter sleep aids like ZzzQuil or Onnit New Mood.

Q. What causes poor sleep?

A. Stress is a common cause of insomnia. Yet, there are many factors that affect sleep quality. Nutrition choices, hormones, chronic disease, or work schedules can affect sleep.

Best Sleep Aids – The Bottom Line

Taking OTC sleep supplements can be helpful for those who are unable to get quality sleep on their own. Since there are different formulas for each brand, trial and error can help individuals find the right one.

Always be sure to talk with your healthcare provider about supplements before starting to take one. Experts also agree that sleeping pills are not the only part of the solution.

*Disclaimer: Health Insiders aims to improve the quality of life for people struggling with substance use or sleep disorder with fact-based content about the nature of sleep health conditions, treatment options, and their related outcomes. We publish material that is researched, cited, edited, and reviewed by licensed medical professionals. The information we provide is not intended to be a substitute for professional medical advice, diagnosis, or treatment. It should not be used in place of the advice of your physician or other qualified healthcare providers.

Sources

Health Insiders relies on peer-reviewed studies, academic research institutions, and medical associations. We avoid using tertiary references. You can learn more about how we ensure our content is accurate and current by reading our editorial policy.

[1] Giselle Soares Passos, Dalva Poyares, Marcos Gonçalves Santana, Carolina Vicaria Rodrigues D’Aurea, Shawn D. Youngstedt, Sergio Tufik, Marco Túlio de Mello, Effects of moderate aerobic exercise training on chronic primary insomnia, Sleep Medicine, Volume 12, Issue 10, 2011, Pages 1018-1027, ISSN 1389-9457, https://doi.org/10.1016/j.sleep.2011.02.007.

[2] Randall, Surilla, Timothy Roehrs and Thomas Roth. “Over-the-counter sleep aid medications and insomnia.” Primary Psychiatry 15 (2008): 52-58

[3] Costello RB, Lentino CV, Boyd CC, O'Connell ML, Crawford CC, Sprengel ML, Deuster PA. The effectiveness of melatonin for promoting healthy sleep: a rapid evidence assessment of the literature. Nutr J. 2014 Nov 7;13:106. doi: 10.1186/1475-2891-13-106. PMID: 25380732; PMCID: PMC4273450.

[4] Tordjman S, Chokron S, Delorme R, Charrier A, Bellissant E, Jaafari N, Fougerou C. Melatonin: Pharmacology, Functions and Therapeutic Benefits. Curr Neuropharmacol. 2017 Apr;15(3):434-443. doi: 10.2174/1570159X14666161228122115. PMID: 28503116; PMCID: PMC5405617.

[5] Hidese, S.; Ogawa, S.; Ota, M.; Ishida, I.; Yasukawa, Z.; Ozeki, M.; Kunugi, H. Effects of L-Theanine Administration on Stress-Related Symptoms and Cognitive Functions in Healthy Adults: A Randomized Controlled Trial. Nutrients 2019, 11, 2362. https://doi.org/10.3390/nu11102362

[6] Hepsomali P, Groeger JA, Nishihira J, Scholey A. Effects of Oral Gamma-Aminobutyric Acid (GABA) Administration on Stress and Sleep in Humans: A Systematic Review. Front Neurosci. 2020 Sep 17;14:923. doi: 10.3389/fnins.2020.00923. PMID: 33041752; PMCID: PMC7527439.

[7] Srivastava JK, Shankar E, Gupta S. Chamomile: A herbal medicine of the past with bright future. Mol Med Rep. 2010 Nov 1;3(6):895-901. doi: 10.3892/mmr.2010.377. PMID: 21132119; PMCID: PMC2995283.

[8] Friedman M. Analysis, Nutrition, and Health Benefits of Tryptophan. Int J Tryptophan Res. 2018 Sep 26;11:1178646918802282. doi: 10.1177/1178646918802282. PMID: 30275700; PMCID: PMC6158605.

[9] Ben Marzoug HN, Romdhane M, Lebrihi A, Mathieu F, Couderc F, Abderraba M, Khouja ML, Bouajila J. Eucalyptus oleosa essential oils: chemical composition and antimicrobial and antioxidant activities of the oils from different plant parts (stems, leaves, flowers, and fruits). Molecules. 2011 Feb 17;16(2):1695-709. doi: 10.3390/molecules16021695. PMID: 21330958; PMCID: PMC6259913.

[10] Jun YS, Kang P, Min SS, Lee JM, Kim HK, Seol GH. Effect of eucalyptus oil inhalation on pain and inflammatory responses after total knee replacement: a randomized clinical trial. Evid Based Complement Alternat Med. 2013;2013:502727. doi: 10.1155/2013/502727. Epub 2013 Jun 18. PMID: 23853660; PMCID: PMC3703330.

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Julie Harris, RDN, LDN, CPT

Julie Harris is a Registered Dietitian Nutritionist, Freelance Writer, and Behavioral Health Specialist. She is also the Owner and Foun...

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