Skip to main content
  1. Home
  2. Health & Fitness
  3. Evergreens

How does melatonin work and how much do you need?

Everything you need to know about this hormone that's available as a sleep aid

Man holding a small white pill
Getty Images

Millions of people suffer from various forms of sleep deprivation. According to the American Academy of Sleep Medicine (AASM), 1 in 3 adults is sleep deprived or affected by a sleeping disorder, including insomnia, sleep apnea, narcolepsy, and sleep deprivation. Lack of sleep leads to a laundry list of health issues and negatively affects the body, brain, mood, and cognitive function.

When it starts getting dark, your brain produces and releases a hormone known as melatonin. This hormone is responsible for regulating your circadian rhythm, or 24-hour internal clock. However, in some cases, your body doesn’t produce melatonin at the appropriate times or amounts. This is where taking a melatonin supplement or eating foods high in melatonin could be very beneficial and necessary for a good night’s rest.

Recommended Videos

This article will explain how melatonin is created in the body, the types of people who should consider taking melatonin, and the possible side effects of taking melatonin supplements.

Man sleeping in a T-shirt
Africa Studio / Shutterstock

What is melatonin?

Unlike other medications and over-the-counter sleep remedies, melatonin is a hormone naturally produced in the brain’s pineal gland that directly ties into your natural circadian rhythm. Your circadian rhythm is a natural internal process of physical, mental, and behavioral changes that follow a 24-hour cycle and responds primarily to light and dark. Darkness triggers the production of the hormone melatonin, and light halts it. Therefore, it helps synchronize our sleep and waking hours with night/day. This cycle ensures we are performing our best optimally and always ensuring consistent, quality rest.

Due to the typical adult lifestyle, certain habits will increase our exposure to light, blocking the natural production of melatonin in the brain. Activities like watching TV, working on a computer, or scrolling our smartphones will all produce unnatural light that prevents melatonin production in the brain. This increased exposure to short-wavelength visible light, or blue light, is why sleep experts suggest not TV watching before bed. It is also advised to put away smartphones and devices a few hours before bed. Instead, it is better to read and turn your bedroom into a sleep sanctuary.

Person sleeping with their feet sticking out from the comforter
lightpoet / Adobe Stock

Who should take melatonin?

Melatonin is an appropriate sleep aid for people who have trouble falling asleep at night or staying asleep throughout the night. Melatonin is also a possible remedy for self-created sleep issues that we might face in life. These could be events such as a disruption in a sleep schedule, changing work shifts, weekends of staying up late and sleeping in, and even jet lag.

Natural melatonin production in the brain decreases with age, making the supplement a popular recommendation for older adults having trouble falling or staying asleep. It’s important to note that melatonin does not put a person to sleep, unlike other sleep remedies. Instead, melatonin gently eases the body into its natural circadian rhythm, promoting sleep. Still, research shows that increasing the amount of melatonin in the body significantly reduces the length of time it takes for a person to fall asleep.

While melatonin is produced naturally within the body, which is known as endogenous melatonin, there are some cases where a supplement is needed. In this case, it’s known as exogenous melatonin, which is synthetically made as a dietary supplement in a lab. This type of melatonin comes in liquid, chewable, capsule, or pill form. The dosages range from 1 milligram up to 10 milligrams. Melatonin dosage varies by person, but experts suggest starting with the lowest possible dose. Then gradually increasing until finding an amount that works best for helping fall asleep with few side effects in the morning.

Contrary to popular belief, taking a higher melatonin dosage will not help you sleep better. People on certain medications should avoid melatonin supplements. Specifically, melatonin should not be used with drugs that thin the blood, treat diabetes or blood pressure, or drugs that suppress the immune system. It should also be avoided by people suffering from depression or dementia and women on birth control.

A man feeling sick in bed
Andrea Piacquadio / Pexels

How long does melatonin take to work?

According to the Sleep Foundation, melatonin typically takes anywhere from 20 minutes to 2 hours to work. This timeframe, however, can vary depending on several factors, such as the form of melatonin you’re taking. Different forms of melatonin supplements are absorbed by the body at varying rates. Some may kick in quicker than others.

The dosage also has a huge effect on how long it takes to work. Your individual self is also a factor, as everyone’s body chemistry is unique. How quickly you metabolize melatonin can differ from person to person. If it takes 20 minutes to 1 hour, you’re a person in which melatonin absorbs quickly. The 1- to 2-hour timeframe is the most common for most people to experience the sleep-promoting effects of melatonin.

A man on his side sleeping.
Ollyy / Shutterstock

Does melatonin have side effects?

Melatonin is relatively safe, but extended supplement use has a few side effects. These side effects include the feeling of not being “fully awake” for the first few hours of the day, headaches, crankiness, dizziness, and an overall foggy feeling.

As with any supplement, it’s essential to know when to stop using melatonin as a way to fall or stay asleep. If taking melatonin before bed isn’t helping, and sleep problems still occur, stop using the supplement and consult a doctor for other possible remedies. On the flip side, even if melatonin is working, attempting to fall asleep without taking a supplement for a few nights is advised. This reduces the possibility that your body will build a tolerance to the supplement, and it will work better to avoid future sleep issues.

There hasn’t been much research done on the long-term effects of melatonin usage. Still, the short-term use of melatonin supplements is a safe option for a better night’s sleep. The body naturally produces melatonin in response to darkness, and production ceases due to the body’s exposure to light. However, in some cases, your body doesn’t produce adequate levels of this hormone, and a supplement is necessary. Be cautious when taking melatonin, and always do so under the supervision of your doctor.

Chris Illuminati is the author of five books and his writing has been featured on websites such as Rolling Stone, Men’s… Read Full Bio
Kevin Hart and Fabletics want you to ‘Get Your Hart On’ in new collection
Architecture, Building, Furniture

The busiest man in Hollywood is hard at work again, this time working with his family at Fabletics on a new launch. Fabletics has always been at the cutting edge of the crossroads between on and off the field. Pieces durable enough to wear on the field, on the court, or in the gym, and stylish enough to wear on a date, to the office, or any other moment of life. The new Kevin Hart collection takes staple pieces like the Don Polo, Cruiser Jacket, Golf Short, and the GridTech Quarter Zip Hoodie and Jogger and releases them in a sophisticated and subtle color palette of black, white, khaki, and green.

We’re expanding where and how Fabletics shows up, and this collection brings our point of view to golf in a way that feels authentic to Kevin and the brand. – Don Ressler, Fabletics co-founder

Read more
Mixing fashion and function with an NFL star: Ja’Marr Chase teams with Fabletics to find his confidence
Baseball Cap, Cap, Clothing

We look up to athletes for a lot of reasons. They are the gladiators of our day. They enter an arena and put their bodies on the line specifically for our entertainment. But to do that, there has to be a commitment. A mindset to shoot for the best of the best and devote everything you are to the perfection of your battle. For us, we tend to revere those men who reach the peak of human performance and want to recreate it in the best way we can. Sure, we can follow their fitness routines, but deep down we know we’ll likely never come close. So, instead, we buy their gear. The things they wear to perform and to chase their own glory. Michael Jordan revolutionized this with his shoes, and now the top athletes recreate it with their own collections.

Ja’Marr Chase, Cincinnati’s #1 wide receiver, chose Fabletics to be his vessel of greatness, and his third drop with the brand goes beyond the gridiron, and we got a chance to go beyond it with him.

Read more
Meet the man legendary athletes trust: Therabody founder talks us into recovery
Conversation, Person, Clothing

When I was in the Army, I woke up at 4 am (my clock no longer has two fours), and I would just get to running eight miles. Then go back to bed. No stretching. No warm-up. No cool down. It was never a problem. I am no longer twenty; I am sorry to say. And that means my body needs more. As a matter of fact, it needed more way back then too. I got an opportunity to sit down with chiropractor and recovery expert Dr. Jason Wersland, the man behind that percussive massage gun you have seen at every gym, every yoga studio, and even a lot of office buildings. What was it about his creation under his company, Therabody, that took over the wellness and recovery industries? I asked him. And I dug into why us guys have a hard time accepting that we’re getting older and need to spend more time in prep and recovery.

Just do something. The small decisions you make every day – moving your body, prioritizing sleep, managing stress, taking a few minutes to recover – they compound over time. That’s where real change happens. – Dr. Jason Wersland, Founder, Therabody

Read more