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Agomelatine was developed under the assumption that one of the main causes of depression is abnormal circadian rhythm. Unlike other antidepressants, agomelatine is a melatonin analog that helps with many root causes of depression. It also has fewer side effects and withdrawal symptoms.

Because depression shares several root causes as other chronic health problems, such as chronic fatigue, brain fog, IBS, anxiety, and chronic inflammation, agomelatine may help you even though you don’t have depression.

Read this post to learn more about how agomelatine works, its health benefits, and whether you should try it.

What Is Agomelatine?

Agomelatine (Valdoxan) is an atypical antidepressant drug developed on the basis that abnormal circadian rhythm causes depression [R].

While most other (typical) antidepressant drugs are selective serotonin reuptake inhibitors (SSRIs) that seek to increase serotonin in the brain, agomelatine activates melatonin (MT1 and MT2) receptors and blocks the 5-HT2C serotonin receptors [R].

Presently, agomelatine is approved in the European Union for the treatment of major depression [R].

In the United States, it is presently under a phase 3 trial for regulatory approval by the FDA, so it is considered a dietary supplement and doctors in the US do not prescribe agomelatine.

How Does Agomelatine Help with Depression and Other Chronic Diseases?

Depression is a disorder of the limbic system (part of the brain that controls emotions and memory) that is categorized by abnormalities in:

  • The stress responses or HPA Axis Dysfunction. Many depressed patients have elevated CRH and cortisol, but are cortisol resistant because they have reduced cortisol receptors in the brain [R].
  • Circadian rhythm. Many depressed patients have a phase shift in their circadian rhythms, so they stay up later and wake up later [R].
  • Sleep habits and sleep cycles. Depression has a high correlation with sleep disorders such as insomnia [R].
  • Inflammation in the brain and the gut. This causes sickness behavior (like chronic fatigue in humans) and also affects tryptophan and serotonin energy production [R].
  • Reduced BDNF levels [R].

We think agomelatine is relevant for many SelfHacked readers and clients because, even though you are not diagnosed with depression, you likely suffer from one or a few such abnormalities.

How Agomelatine Works

Mode of action of agomelatine. Source:

Unlike other antidepressants, agomelatine helps with several aspects of depression physiology as listed above, including:

  • Restoring normal circadian rhythm, just as melatonin would [R]
  • Reducing cortisol [R]
  • Increasing BDNF [R, R2]
  • Improving sleep quality [R]
  • Reducing inflammation in the brain due to lipopolysaccharides (a model of leaky gut) in rats [R]

Although agomelatine is molecularly very similar to melatonin, it is more potent than melatonin because of the longer half-life [R].

Agomelatine has a half-life of 2.3 hours, while melatonin has a half-life of 50 minutes. Agomelatine also binds more strongly to melatonin receptors than does melatonin itself [R].

By blocking 5-HT2c receptors on dopaminergic and noradrenergic neurons, agomelatine elevates dopamine and norepinephrine levels in the brain (prefrontal cortex, but not limbic system), proving beneficial to both nootropic cognitive enhancement and treatment of depression [R].

Advantages of Agomelatine Over Other Antidepressants

  • It is immediately effective, whereas other antidepressants may take 4 – 6 weeks (or months) to have antidepressant effects [R]
  • It has milder side effects than other drugs. SSRIs and other antidepressants can have severe stomach side effects (nausea and vomiting), sexual dysfunction, bleeding disorders, and many potentially life-threatening interactions with other drugs [RR2]
  • No withdrawal symptoms after abrupt discontinuation (or other common side effects of antidepressant medication) because it does not stimulate serotonin receptors [R]

Our Personal Experience with Agomelatine

We use agomelatine at SelfHacked HQ when we want to catch up on sleep or get a night of long sleep.

Nattha’s experience: Personally, I find that agomelatine puts me to sleep but it doesn’t increase deep sleep if I have other problems that are preventing me from getting deep sleep. Sometimes, I don’t sleep well because I have high histamine and I may have a sleep-breathing disorder called upper airway resistance syndrome (UARS). Therefore, I’ve found agomelatine works for me best together with antihistamine, a dental appliance, a sleep position that address UARS, and blue light elimination.

I do experience better and calmer mood, in general, the morning after agomelatine use.

Health Benefits of Agomelatine

1) Agomelatine Helps Treat Mood Disorders by Restoring Normal Circadian Rhythm

By stimulating melatonin receptors, agomelatine can resynchronize circadian rhythm with the external environment. In animal studies, agomelatine restored dysfunctional sleep/wake cycles, represented by enhanced duration of REM and slow-wave sleep after acute oral administration [R, R2].

A combination of circadian rhythm restoration and selective serotonin blockers makes agomelatine a worthy treatment for mood and sleep disorders [R].

2) Agomelatine Protects the Brain by Increasing BDNF

Hippocampal BDNF enhances synaptic plasticity, which improves the brain’s ability to learn, store, and access new information [R, R2, R3].

Agomelatine increases BDNF levels in the hippocampus, thereby enhancing the survival of existing neurons and synapses, as well as the growth and production of newly generated ones [R, R2].

Elevated BDNF helps prevent stress-induced impairment of visual memory and spatial learning. For this reason, agomelatine treatment may influence long-term behavioral response to stress, which can help mitigate symptoms of mood disorders and physiologically enhance the brain’s ability to cope with stressful situations [R, R2, R3].

Agomelatine also increases CREB (cAMP response element-binding protein), which helps prevent the degenerative effect of environmental stressors on the hippocampus. This neuroprotective property may contribute to agomelatine efficacy for treating mood disorders related to stress-induced deterioration of memory and mood [R, R2].

3) Agomelatine Increases Neurotransmitter Release

By blocking the serotonergic receptor 5HT-2c, agomelatine increases norepinephrine and dopamine release, which enhances daytime motivation and helps combat the physical and mental effects of mood disorders [R, R2, R3].

Some aspects of agomelatine antidepressant characteristics may also be attributed to these pro-cognitive or nootropic benefits.

4) Agomelatine Reduces Anxiety Symptoms

Agomelatine may be used as an adjunctive treatment for depression-related anxiety symptoms. In clinical studies, agomelatine demonstrated the ability to improve anxiety symptoms within major depression, proving superior to both placebo and comparable depression medication [R].

Agomelatine may also treat generalized anxiety disorders (those not linked to depression).

In a study involving over 400 patients over the course of 12 weeks, agomelatine was shown to be as effective as escitalopram in mitigating anxiety symptoms and had less adverse effects as a result of its novel mechanism of action [R].

5) Agomelatine Helps with Neuropathic Pain

Due to the neurological causes of neuropathy, antidepressants (not painkillers) are among the go-to treatments for otherwise treatment-resistant neuropathic pain. Melatonin, serotonin, and norepinephrine play a major role in neuropathic pain disorders [R].

Melatonin reduces pain by simultaneously stimulating melatonin receptors and blocking specific serotonin receptors in rodents [R].

Agomelatine also reduced symptoms of pain hypersensitivity and abnormal pain sensation (from touch and temperature) in diabetic rats. Agomelatine ultimately restored pain sensitivity and response in the diabetic rats to the levels of non-diabetic control rats [R].

Agomelatine may even treat neuropathic pain in fibromyalgia cases that have previously been unresponsive to medical treatment, due to its blocking of serotonergic receptor 5HT-2C [R].

6) Agomelatine Improves Bone Health and Muscle Strength

Inflammatory cytokines are produced by cells to initiate localized inflammation and immune responses and maintain bone balance [R, R2, R3].

Uncontrolled amounts of inflammatory cytokines impair generation of important bone cells called osteoblasts and osteoclasts, which are involved in bone restoration and maintenance.

High amounts of IL-1β, IL-6, and TNF-α may even weaken bones and ultimately lead to osteoporosis, arthritis, bone erosion, cartilage degradation, and even gum disease [R, R2, R3, R4].

Agomelatine reduces the levels of proinflammatory cytokines TNF-α, IL-1β, and IL-6 [R].

By suppressing these potentially harmful cytokines, agomelatine helps keep bones healthy and prevents loss of bone density [R].

Agomelatine consistently raises both IGF-1 and growth hormone levels by stimulating melatonin receptors, which regulate hormone secretion during sleep. This is beneficial not only to healthy bone development, but also for prevention of bone loss and muscle atrophy [R, R2, R3, R4].

By increasing IGF-1 and growth hormone secretion, while simultaneously reducing catabolic proinflammatory cytokines, agomelatine may even enhance muscle strength. Rodents treated with agomelatine showed an increase in muscle strength and density after five weeks of treatment [R, R2].

7) Agomelatine Protects Mitochondria from Oxidative Stress

Agomelatine offers similar antioxidant and mitochondrial benefits due to its chemical similarity to melatonin. It also has a longer half-life, better oral bioavailability, and higher affinity for melatonergic receptors than melatonin itself [R, R2, R3].

Agomelatine’s potent antioxidant properties enhance natural elimination of 3-nitropropionic acid (3-NPA), a dangerous mitochondrial toxin that causes neuromuscular disorders.

3-NPA toxicity usually occurs as a result of prolonged ingestion of slightly moldy crops (like sugarcane or peanuts). 3-NPA causes health problems such as weight loss, motor impairment, and learning-memory deficits [R, R2].

8) Agomelatine Reduces Inflammation from Leaky Gut

Lipopolysaccharides (LPS) is a bacterial toxin that can leak into the bloodstream when there is leaky gut. It can cause inflammation and metabolic problems like insulin resistance, obesity, diabetes, and heart diseases [R].

In rats, chronic treatment with agomelatine reduces the inflammatory cytokines IL-1beta and IL-6 induced by LPS [R]. The same study also finds deactivation of NF-kB, the protein that turns on inflammatory responses in the immune system.

The study found that the inflammatory cytokines decreased both in the brain and throughout the body. Interestingly, Nattha also (unexpectedly) discovered that agomelatine helped with eczema during the day following agomelatine use.


Liver Enzyme Warning

Before starting agomelatine, it is important to screen liver enzyme levels. Additional enzyme screening should be performed after 3, 6, 12, and 24 weeks. If the dosage is increased, the screening period should restart. A final screening after the treatment is recommended [R, R2].

The use of agomelatine should be stopped immediately if liver enzyme screening indicates a 3x increase of blood transaminases. Beware of symptoms that may indicate potential liver damage, such as dark urine, light-colored stool, yellowing skin or eyes, stomach pain, or new/worsening fatigue [R].

Mechanism of Action

Agomelatine acts as an activator of melatonergic M1 and M2 receptors and blocker of serotonergic 5-HT-2C receptors [R].

Agomelatine has no affinity (Ki > 10 μM) for most receptors including adenosine, adrenoceptors, dopamine, GABA, muscarinic, nicotinic, histamine, excitatory amino acid, benzodiazepine, and sigma receptors [R].

Agomelatine also has no affinity for sodium, potassium, and calcium channels [R].

Agomelatine does not interact with conventional targets of antidepressant drugs like MAOA/B, nor the transporters responsible for reuptake of 5-HT, NA, or DA [R].

Agomelatine treatment does not decrease 5HT-1A receptors, nor does it affect extracellular levels of 5-HT [R].

This is how agomelatine avoids common adverse effects of conventional antidepressants.

Long-term administration of agomelatine enhances the number of spontaneously active neurons and the bursting activity of dopaminergic neurons in the ventral tegmental area [R].


Pharmaceutical agomelatine is prescribed (as Valdoxan) in 25 mg tablets, typically taken once daily at bedtime. Dosage may be adjusted to 50 mg (2 x 25 mg tablets) taken at bedtime, if agomelatine treatment has no effect after two weeks [R].

Antidepressant treatment using agomelatine typically lasts at least six months [R].

Agomelatine should not be used by elderly people (75+ years) [R].

FDA Compliance

The information on this website has not been evaluated by the Food & Drug Administration or any other medical body. We do not aim to diagnose, treat, cure or prevent any illness or disease. Information is shared for educational purposes only. You must consult your doctor before acting on any content on this website, especially if you are pregnant, nursing, taking medication, or have a medical condition.


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  • Jennyrabbit

    Glad I found this! Have just been Rx agomelatine (my GP had never heard about it btw) following 25yrs on mainly Lustral. I tried everywhere, including my local pharmacist, to find out if it actually had a different mode of action to melatonin, which I use quite often (but not together!). The information here is all I’ve found, so thank you.

  • Julz

    Any updates?

  • Maria

    Any known interactions with common anti-anxiety drugs or anti-depressants?

  • Lou

    Any update on this please Nicole?

  • Jedd

    I’ve just started using this drug for depression and the relief was literally the next day. My thinking and ability to function has already improved and I have major depression

  • Nicole B

    Julia, this is for sure not a short term drug, you really have to take it for a few weeks to see the benefits. It doesn’t make you sleepy like Valium, it’s more like your head just feels heavy… if you push past this feeling you get a bit of a headache I’ve found.. it has done nothing for me in terms of reducing pain like pain killers, so far.

  • Nicole B

    I am about to start taking Valdoxan, as it is available in Australia. I found this page super useful, but as there is not very much user experience out there on the internet, I thought it was important to share my symptoms and experiences. I have always suffered anxiety, and gone through several elongated periods of depression starting from the age of 12 years old. I have always been prone to fatigue, even when my depression and anxiety seem less intense and life “feels good” if I don’t have 10 hours sleep I find I struggle through the day and wonder how other people seem to cope just fine on 6 hours, meanwhile I will be having a nap in my lunchbreak or after work. The naps always cause me to not feel ready for normal sleep later on- although I seem to get to sleep fine after about 15 minutes. I recently suffered an injury to my lower lumbar spine causing two bulged discs and sciatica. After 3 months of inactivity, and pain everyday, my anxiety was overwhelming to the point my doctor prescribed Escitalopram. The Escitalopram was okay and stopped all anxiety but I had problems with concentrating on things I wanted to do, having to remind myself constantly out loud of the next thing job- a task like cooking dinner seemed impossible due to the steps involved because I would forget what to do next after I had read the recipie. I also suffered from sexual dysfunction and loss of other urges, especially when going to the bathroom. In addition I was also taking Valium to go to sleep. Hopefully this replaces both Valium and Escitalopram… I will be able to report back with the sustained affects of my personal experience within a few weeks. I will also be able to let everyone know how it goes with pain management as well, specifically for inflammation in the discs in my back.

  • Brian

    Methyl donors make me nutty even in small doses. I can confirm that while melatonin was very obviously a methyl donor to me, agomelatin was not! L-theanine is a methyl donor. Tianeptine is not. I have never found any meds to be methyl donors although maoi’s aggravate me in a similar way.

  • Justin

    Where did you guys get the agomelatine? It’s not available in the us

    1. Nattha Wannissorn, PhD


  • Nancy Smith

    I am very interested in this. I just joined Selfdecode about a week ago and I now know I have huge issues with 5HT2C in addition to depession and fatigue.I ave never found an effective antidepressant and as you can imagine have reacted very adversly to SSRI’s.However I am now trying yibird at 5mg for about three weeks without any success(but so far no serotonin syndrome).I would like to get more nfo on this produt.Is it available in the US? I have also been trying to join the VIP membership but an’t get it to take me info even after I was on SelfDecode. Thanks for any hep! Nancy Smith

  • julia jason

    you mentioned at self hacked HQ you use agomelatine occasionally to help fall asleep, does it actually make you sleepy like a sleeping pill? or does it reduce pain, like tranquillisers do ? could you use it occasionally to relive anxiety or depression, or does it work better on a long term basis ? thanks

    1. Nattha Wannissorn, PhD

      Yes, it makes you sleepy. We don’t know if it reduces pain because none of us suffer from extreme pain of sorts. We don’t use it for anxiety/depression per se but it has an anti-anxiety/antidepressant effect. And no we haven’t tried it long term because we need the time to work on SelfHacked.

  • Elahn Ientile

    This looks interesting, is agomelatine a methyl donor?

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