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Sleeping Tips: Is Supplementation Safe?

One of the most frequently asked questions I get around sleep is, “If I use a supplement containing melatonin, will I become addicted?” or “Will I build tolerance and be unable to sleep without it?” Let me clear the air on this topic since I recently wrote about many of the benefits melatonin provides in keeping your immune system in peak shape, especially during the cold and flu season.

I can confidently say that melatonin is one of the safest supplements you can take. Of course, when considering the use of melatonin (or any other supplement to treat COVID-19), the safety of each individual product it comes in is of utmost importance. Some products are certainly of higher quality than others.

As reviewed previously, short-term use of melatonin is incredibly safe, even when given in high doses, and the reported adverse effects are limited to occasional dizziness, headache, nausea, and sleepiness. Generally speaking, melatonin's safety profile in humans is very high (Andersen et al., 2016). In clinical trials, doses of 3 mg, 6 mg and 10 mg of melatonin oral intake by patients in ICU showed satisfactory safety when compared to placebo (Bourne et al., 2008; Mistraletti et al., 2010; 2015). I typically never go beyond 3 mg in practice with my patients, but some studies have even gone as high as 1 gram per day for a month with no adverse effects reported (Nordlund & Lerner, 1977). Although there are no clinical trials to assess the use of melatonin in COVID-19 patients, in individuals with other inflammation-causing diseases, the use of melatonin has shown promising results with respect to boosting the immune system. 

The safety of melatonin has been verified in many human studies. It is important to note that taking Melatonin 1.5 hours or earlier before bed improves its effectiveness and prevents one from experiencing any minor side effects. 

Melatonin Effects in Cytokine Levels in Humans

In a randomized controlled 8-week trial (RCT), oral supplementation of 6 mg per day of melatonin caused a significant decrease in serum levels of the inflammation-producing cytokines IL-6, TNF-α, and the inflammatory cardiac marker hs-Creactive protein (hs-CRP) in patients with diabetes mellitus and teeth & gum disease (periodontitis) (Bazyar et al., 2019). When these powerful cytokines associated with causing tons of tissue damage subside, the immune system is able to work more favorably against overarching pathogens causing disease. 

In another study with patients suffering with severe multiple sclerosis, 25 mg per day of melatonin for 6 months also led to a significant reduction in serum concentrations of the cytokines TNF-α, IL-6, IL-1β, and lipoperoxides (Sánchez-López et al., 2018). In acute phases of inflammation, such as during surgery, (Kücükakin et al., 2008), melatonin intake of 10 mg per day, 6 mg per day, and 5 mg per day for less than 5 days reduced the level of circulating pro-inflammatory cytokines. Lastly, in a meta-analysis of 22 RCTs, it was found that melatonin is associated with a significant reduction of TNF-α and IL-6 level (Zarezadeh et al., 2019). 

All of this clinical evidence (in addition to the past 3 previous posts) suggests that the use of melatonin as a supplement may effectively reduce the inflammation and in turn, lessen the harm caused by many chronic disease and pathogens (i.e., COVID19).  By boosting the immune system, melatonin can improve clinical outcomes.

Any risk of melatonin in COVID-19 is theoretical at this point. The potential beneficial effects of melatonin as adjuvant use in COVID-19 in anti-inflammation, anti-oxidation, and immune response regulation has been repeatedly demonstrated in respiratory disorder models induced by infections and associated complications. Melatonin’s safety profile is near excellent. And despite the direct evidence of melatonin application in COVID-19 is unclear, both its use in experimental animal models and in humans has continuously documented its efficacy and safety and its use by COVID-19 patients predictably would be highly beneficial.


Thinking Beyond Initial Infection: 

“Spill Over” into Sepsis, Cardiac Arrest, and Brain Damage

I would be remiss if I didn’t talk about the other ways melatonin can help heal the body. First, the integrity of the blood vessels lining the lungs and heart is better protected with Melatonin. This helps prevent the increased risk of blood poisoning (sepsis), heart failure and lung collapse some COVID-19 infected individuals have been experiencing. Melatonin has been shown to ameliorate septic shock (Volt et al., 2016), mentioned previously in my last post here by better protecting the kidneys and liver from becoming injured (Chen et al., 2019; Dai et al., 2019; Zhang et al., 2020). 

Melatonin also provides neurological protection by reducing swelling and inflammation in the brain along with protecting the brain-blood barrier permeability (Tordjman et al., 2017). In the ICU, deep sedation is associated with increased long-term mortality, and, surprisingly, the application of melatonin reduces sedation use and the frequency of pain, agitation, anxiety (Mistraletti et al., 2015; Lewandowska et al., 2020). Not to mention, a recent meta-analysis showed that melatonin improves sleep quality in patients in the ICU (Lewis et al., 2018).

This speaks volumes and should change our perception of this hormone from “a sleep aid” to “an anti-inflammatory, regulatory aid.” Therefore, the rationale for melatonin supplementation in COVID-19 positive individuals not only focuses on the attenuation of the infection-induced respiratory disorders, but also on an overall improvement and prevention of patients' well-being and potential complications. After all, sleep is a sustainable, life-promoting force.


Dr. Bhandari and the Advanced Health Team Are Here to Support Your Health.

Our expert team of integrative holistic practitioners work with patients suffering from chronic health concerns.  We help our patients reverse disease by better understanding how the body optimally functions and providing personalized treatment plans. To learn more and book an appointment, contact Advanced Health or call 1-415-506-9393.



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Bazyar, H., Gholinezhad, H., Moradi, L., Salehi, P., Abadi, F., Ravanbakhsh, M., & Javid, A. Z. (2019). The effects of melatonin supplementation in adjunct with non-surgical periodontal therapy on periodontal status, serum melatonin and inflammatory markers in type 2 diabetes mellitus patients with chronic periodontitis: a double-blind, placebo-controlled trial. Inflammopharmacology, 27(1), 67-76.


Bourne, R. S., Mills, G. H., & Minelli, C. (2008). Melatonin therapy to improve nocturnal sleep in critically ill patients: encouraging results from a small randomised controlled trial. Critical Care, 12(2), R52.


Cheng, J., Yang, H. L., Gu, C. J., Liu, Y. K., Shao, J., Zhu, R., ... & Li, M. Q. (2019). Melatonin restricts the viability and angiogenesis of vascular endothelial cells by suppressing HIF-1α/ROS/VEGF. International journal of molecular medicine, 43(2), 945-955.


Chen, J., Xia, H., Zhang, L., Zhang, H., Wang, D., & Tao, X. (2019). Protective effects of melatonin on sepsis-induced liver injury and dysregulation of gluconeogenesis in rats through activating SIRT1/STAT3 pathway. Biomedicine & Pharmacotherapy, 117, 109150.


Dai, W., Huang, H., Si, L., Hu, S., Zhou, L., Xu, L., & Deng, Y. (2019). Melatonin prevents sepsis-induced renal injury via the PINK1/Parkin1 signaling pathway. International Journal of Molecular Medicine, 44(4), 1197-1204.


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Lewandowska, K., Małkiewicz, M. A., Siemiński, M., Cubała, W. J., Winklewski, P. J., & Mędrzycka-Dąbrowska, W. A. (2020). The role of melatonin and melatonin receptor agonist in the prevention of sleep disturbances and delirium in intensive care unit–a clinical review. Sleep Medicine, 69, 127-134.


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Reiter, R. J., Ma, Q., & Sharma, R. (2020). Treatment of Ebola and other infectious diseases: melatonin “goes viral”. Melatonin Research, 3(1), 43-57.


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Shafiei, E., Bahtoei, M., Raj, P., Ostovar, A., Iranpour, D., Akbarzadeh, S., ... & Movahed, A. (2018). Effects of N-acetyl cysteine and melatonin on early reperfusion injury in patients undergoing coronary artery bypass grafting: A randomized, open-labeled, placebo-controlled trial. medicine, 97(30).


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Volt, H., García, J. A., Doerrier, C., Díaz‐Casado, M. E., Guerra‐Librero, A., López, L. C., ... & Acuña‐Castroviejo, D. (2016). Same molecule but different expression: aging and sepsis trigger NLRP3 inflammasome activation, a target of melatonin. Journal of pineal research, 60(2), 193-205.


Wu, X., Ji, H., Wang, Y., Gu, C., Gu, W., Hu, L., & Zhu, L. (2019). Melatonin alleviates radiation-induced lung injury via regulation of miR-30e/NLRP3 Axis. Oxidative Medicine and Cellular Longevity, 2019.


Zarezadeh, M., Khorshidi, M., Emami, M., Janmohammadi, P., Kord-Varkaneh, H., Mousavi, S. M., ... & Alizadeh, S. (2019). Melatonin supplementation and pro-inflammatory mediators: a systematic review and meta-analysis of clinical trials. European journal of nutrition, 1-11.


Zhang, J., Wang, L., Xie, W., Hu, S., Zhou, H., Zhu, P., & Zhu, H. (2020). Melatonin attenuates ER stress and mitochondrial damage in septic cardiomyopathy: A new mechanism involving BAP31 upregulation and MAPK‐ERK pathway. Journal of Cellular Physiology, 235(3), 2847-2856.


Zhao, Z., Lu, C., Li, T., Wang, W., Ye, W., Zeng, R., ... & Liu, C. (2018). The protective effect of melatonin on brain ischemia and reperfusion in rats and humans: In vivo assessment and a randomized controlled trial. Journal of pineal research, 65(4), e12521.

Payal Bhandari M.D. Dr. Payal Bhandari M.D. Dr. Payal Bhandari M.D. is one of U.S.'s top leading integrative functional medical physicians and the founder of San Francisco' top ranked medical center, SF Advanced Health. Her well-experienced holistic healthcare team collaborates together to deliver whole-person personalized care and combines the best in Western and Eastern medicine. By being an expert of cell function, Dr. Bhandari defines the root cause of illness and is able to subside any disease within weeks to months. She specializes in cancer prevention and reversal, digestive & autoimmune disorders. Dr. Bhandari received her Bachelor of Arts degree in biology in 1997 and Doctor of Medicine degree in 2001 from West Virginia University. She the completed her Family Medicine residency in 2004 from the University of Massachusetts and joined a family medicine practice in 2005 which was eventually nationally recognized as San Francisco’s 1st patient-centered medical home. To learn more, go to

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