How Long Does Melatonin Last In Your System?

Written by Mehran Uzair

Last Updated on Jul 21, 2023

In this article:

    Melatonin is a hormone produced by the body that regulates your sleep. It is majorly produced during the night, i.e., when you turn off the lights. It controls the circadian rhythm, and as the levels increase, it makes you sleepy. But if the body produces it, you might wonder, what is melatonin used for, and why are we taking supplements? 

    Well, if you cannot sleep or have developed some sleep issues, then you can take it to soothe your sleep cycle. 

    American consumers spent $825,559,397 on melatonin supplements in 2020. While it is an easy supplement to get, the main thing to focus on is how long does melatonin last in your body. 

    Melatonin can last in your body for up to five hours. 

    So, before you take that supplement, make sure you take it at nighttime so that you only sleep when you take Melatonin. 

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    How Does Melatonin Work?

    Like mentioned before, Melatonin works when you are exposed to darkness. It is produced by the pineal gland, which is located in the middle of the brain with the neurons that control your body clock. Higher melatonin levels put your body to sleep by lowering your blood pressure levels and lowers body temperature. 

    Melatonin is mostly used to get rid of sleep disorders like insomnia. These are also commonly used in the below situations. 

    • Recovering from jet lag
    • Migraines 
    • Irritable bowel movement 
    • Insomnia 
    • Autism 

    Now, coming to the point, how does Melatonin affect the body? Your body produces Melatonin during the day, but it increases production rapidly during evening hours. Hence that is why you sleep easily without lights. Taking Melatonin for sleep can boost melatonin production and give you a good night’s sleep.

    How Long Does Melatonin Take to Work?

    Melatonin pills begin to work just 20 minutes after you take them. So, it is ideal for taking Melatonin before bed seems like a great idea. Ideally, you should take it 2 hours before sleeping to make sure you don’t sleep the next day, as that will happen if you take it late at night. 

    You must know, Melatonin affects everyone differently. While some people might sleep within 25 minutes of taking Melatonin, others might take 1 hour. As Melatonin quickly absorbs in the body, you might want to head straight to bed after taking it. 

    Extended-Release Melatonin vs. Regular Melatonin

    When thinking of Melatonin, you might think that it is just a regular pill that makes you sleep and probably works soon. Well, you are partially right. However, there are extended-release melatonin pills, also called slow-release Melatonin, that dissolve in the body gradually. There are two types of Melatonin you can use. 

    Let’s have a closer look at time-release Melatonin and a regular one. 

    Extended-Release MelatoninRegular Melatonin
    Dissolves gradually in the bloodstreamDissolves instantly in the bloodstream
    It can last up to 5 hoursIt lasts up to 1 hour 
    Less effective than regular More effective than extended-releases

    These are a few points that tell the difference between extended-release Melatonin and regular Melatonin. But before you take one, it would be great if you could consult with your doctor once. 

    Melatonin Dosage: How Much Melatonin Is Too Much?

    A general proper melatonin dosage should be 0.30 to 5 mg. It is advised that you should start with the smallest dose to get habitual. You can then slowly increase the intake of Melatonin over time. 

    As said earlier, Melatonin affects everybody differently; hence it cannot be measured as to how much Melatonin is too much. The best possible solution is to ask your doctor how much Melatonin you should take on a regular basis. 

    Keep in mind that if you take too much Melatonin, it would be counterproductive and won’t ease your sleep issues. It can easily disrupt your circadian rhythm and leave you awake at night. 

    If you are looking to fix your sleep schedule, then you should read our latest blog to do so. 

    Can You Overdose on Melatonin?

    As Melatonin isn’t a habit-forming supplement, it should not be taken for longer durations. And to answer the question, yes, you can overdose on Melatonin easily. Using it for a longer duration can harm the body rather than doing good. 

    Here are some of the symptoms people come across when they overdose on Melatonin. If you suffer from these, then you know you’ve been using excess Melatonin and should cut back immediately or consult a physician. 

    Apart from these, you should look out for other symptoms of melatonin overdose before taking them.

    Wish to know more about melatonin for adults and overdosing on melatonin? Read our latest blog today. 

    When to Take Melatonin?

    As mentioned earlier, the best time to take melatonin supplements is 2 hours before bedtime. They can also be taken if you have jet lag. Most people do that to ease their sleep. 

    You could also take Melatonin to adjust your sleep-wake cycle if you’ve messed yours. Melatonin is also taken by people who work night shifts to regulate their sleep cycles. 

    People with sleep disorders also use it as some doctors prescribe it in small quantities to regulate their sleep habits.

    If you are looking for other ways to fall asleep fast, then you should check out our blog on the fastest ways to fall asleep.  

    How Long Does Melatonin Stay in Your System?

    There’s a reason why Melatonin is called a half-lifer supplement. It generally lasts for 20-50 minutes in the body. After this, only half of the quantity is left in the body. 

    Most doctors prescribe melatonin dosage by weight. It might help you sleep better, but it doesn’t promise a long good night’s sleep. You might be able to regulate your sleep issues, but it doesn’t stay in the body for much longer. Therefore, it is advised to take it during the nighttime and go to bed straight away. 

    How Long Does It Take for Melatonin to Wear Off?

    Although Melatonin might not be effective after 1 hour, it might take 6-8 hours to wear it off. And that is why you should probably go to sleep after taking Melatonin. Otherwise, you might feel a bit drowsy, weak, or tired the next day if you take it late at night. 

    You won’t feel hungover the next day but, the above-mentioned symptoms are more likely to happen. You might want to switch to find natural ways to sleep if you don’t want to overdose or feel drowsy often. 

    The total time it takes to get Melatonin out of the system varies, as it affects people differently to people. The several factors that affect it are 

    • Age 
    • Caffeine intake 
    • Alcohol intake 
    • Body composition 
    • Overall health 
    • Medications 
    • Tobacco intake 

    Related: Can coffee make you sleepy? Find out why coffee makes you fall asleep instead of keeping you awake. 

    Melatonin Side Effects

    While melatonin is said not to be continued as a long-term habit, it is completely safe to take for up to 2 years. To keep in mind, pregnant women shouldn’t take it without consulting with a physician. 

    People have different reactions to melatonin, and the symptoms like melatonin hangover might differ among people. If you are taking melatonin and face any of these side effects, you should stop taking it immediately and visit a doctor. 

    If you think there are only benefits of melatonin, then have a look at these are the symptoms of the side effects of Melatonin. 

    • Fatigue 
    • Headaches 
    • Stomach issues 
    • Irritability 
    • Anxiety 
    • Depression 
    • Drowsiness 
    • Nausea 

    If you do not wish to have any of these side effects, you can find easy and natural ways to get more deep sleep

    Summing It up

    So now that you know all about Melatonin, remember it takes 30 minutes to kick in and can last for up to 5 hours. It is readily available in the form of pills, and there is nothing wrong with taking them. Although, consulting with your doctor at first would be the best thing to do. 

    Disclaimer: This website does not offer medical advice nor professional medical services; rather, it is provided solely for educational, informational, and/or entertainment purposes. Individuals seeking medical advice should consult a licensed physician. The information provided should not be used for diagnosis or treatment of any condition, disease, or injury. When you have a medical condition, you should always talk to licensed doctor or other certified medical professional. You should never delay seeking professional medical advice or treatment based on the contents of this website. Call 911 or immediately go to the nearest emergency room if you think you may have a medical emergency. The contents of this website are provided "as-is", Dreamcloud Sleep and its parent, subsidiaries, affiliates, employees, contributors disclaim any warranty of the information contained herein. Please contact support@dreamcloud.com to report any errors, omissions, misinformation, or abuse.
    {"faq":[{"_id":"d2370ba","title":"Does Melatonin make it hard to wake up?","content":"\u003Cp\u003ENectar not only offers contoured support at a fantastic price, but it also provides peace-of-mind with our industry-leading 365 night risk-free sleep trial and Forever Warranty\u2122. Plus, every Nectar mattress is shipped fast and free to your front door. And if it\u2019s not a perfect fit, we\u2019ll refund your purchase and work with you to get the mattress donated or recycled. No hard feelings.\u003C\/p\u003E"},{"_id":"9270513","title":"Is 10 mg of Melatonin too much?","content":"\u003Cp\u003EIt can be okay for some people to take 10 mg, but it isn\u2019t ideal for everyone. You should consult your doctor before taking Melatonin and probably start taking it in small doses such as 0.3 mg.\u003C\/p\u003E"},{"_id":"cc9e2af","title":"How long is Melatonin safe to take for sleep?","content":"\u003Cp\u003EIt is safe to take Melatonin straight for 2-3 months. 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