CircadiYin Reviews – Negative Side Effects?

Struggling to overcome stubborn unwanted weight? Are you over the age of 40? If the answers are yes, the two may influence one another. When we age, the body tends to restrict the production of several chemicals and hormones. Consequently, one hormone believed to influence one’s sleep patterns is also trusted to prevent healthy weight management. The creators of a solution called CircadiYin insist that the answer to all weight loss hindrances stem from poor sleep, or precisely, a defect in the body’s internal clock. What does this all mean? The purpose of this review is to introduce CircadiYin’s possible impact on weight loss, starting with its intended purpose.

What is CircadiYin?

CircadiYin is a dietary supplement formulated to promote deep sleep, regulate circadian rhythm, and boost metabolic function for utmost weight loss. The twist here is that this supplement is intended for people over the age of 40, an age group cursed with the worst possible luck when it comes to weight management. Based on this description alone, one might conclude that a link between circadian rhythm and weight management needs studying. And that’s exactly what we plan to do next.

How does CircadiYin work?

CircadiYin is founded on two principles. The first is a Chinese favorite called Yin and Yang, which, as explained in the video presentation, represents duality, balance, and how connected two opposing forces can be. In the context of weight loss, the creators integrated this notion of opposing forces by addressing sleep and awake, or more precisely, the sleep-wake cycles within our bodies. Another term that embodies the latter is the lo and behold “Circadian Rhythm.”

It turns out that women and men over 40 years of age are struggling to put off weight because of an imbalance in their circadian rhythm, which gives rise to a desynchronization between internal sleep-wake rhythms. In fact, it doesn’t only go as far as affecting sleep; one source affirms that it can also disrupt the hormone cycle, introduce metabolic disorders leading to diabetes, metabolic syndrome, and obesity, and mood disorders (i.e., anxiety, depression, irritability) to say the least [1].

Ultimately, CircadiYin had to be formulated as a means of rebalancing the circadian rhythm. This was largely founded on all-natural ingredients home to Traditional Chinese Medicine (TCM). This supplement can anticipate renewed deep sleep, a metabolic boost, and desirable weight loss effects by taking this supplement. Bearing everything in mind, let’s now turn to the formula itself.

What ingredients are inside CircadiYin?

Earlier, we mentioned that the CircadiYin is made of all-natural ingredients that are also trusted to support modern science in addition to abiding by TCM. Summarized below are the known ones followed by their potential benefits:

Skullcap Root

Skullcap or Scutellaria is a genus of flowering plants belonging to the Lamiaceae family. A one-piece that looked at skullcap uses appears to have referred to TCM. Particularly, it was noted that the dried roots of the skullcap possess a series of properties ranging from anti-inflammatory and antipyretic to antibacterial, antihypertensive, and sedative. Speaking of sedative, its root allegedly contains an active constituent called baicalin.

When this component was administered to rats 20 minutes before dark, it enhanced short wave sleep (SWS) for 8 to 10 hours, with higher doses increasing REM sleep. The researchers concluded that “this shows the importance of circadian rhythms when dosing baical skullcap to enhance sleep,” noting that one possible reason for this might have to do with the component’s interaction with GABAA receptors [2].


Magnesium is a mineral responsible for ensuring that over 300 functions are properly executed in the body while contributing to the synthesis of proteins, DNA, and RNA. On the topic of sleep, this mineral is trusted to maintain healthy levels of GABA (i.e., a neurotransmitter that barricades impulses between nerve cells). Consequently, individuals might experience a calming effect, boosting the circadian rhythm and preparing for sleep [3].


Valerian is yet another herb recommended because of its calming effect and sleep-enhancing capacities. They also recommended the use of valerian root/rhizome as being likely more beneficial than other varieties. A systematic review that re-evaluated the effects of valerian on sleep concluded that the results were inconsistent across the 60 studies because of multiple active constituents. That said, the researchers did confirm its therapeutic effects, highlighting that no side effects were reported by participants between the ages of 7 and 80. In fact, they concluded that “valerian could be a safe and effective herb to promote sleep and prevent associated disorders,” but undoubtedly, consistent studies are needed as well [4].

Lemon Balm

Lemon balm is a perennial herb from the mint family whose leaves are used for medicinal purposes. A mice study that looked at the effects of lemon balm on anxiety-like responsiveness reported positive results as well. In further researching its effect using Cyracos, which allegedly contains a significant amount of rosmarinic acid, triterpenoids, oleanolic acid, and ursolic acid, the researchers concluded that it did, in fact, exhibit anxiolytic effects under moderate stress conditions [5]. In other words, lemon balm may elicit a calming effect and, in turn, push individuals into sleep.


Passionflower is a climbing vine that is trusted to carry calming effects like lemon balm, valerian, and magnesium. One study that evaluated the effects of passionflower on circadian rhythms concluded that its ingestion (100mg/kg/day) improved sleep latencies and sleeping times. In addition, the secretion of corticosterone, i.e., a hormone related to metabolism and immune responses, “enhanced oscillations without changes in maximum secretion levels of phase shifts.” Simply put, the team saw this as a positive impact on clock genes [6].


Goji or wolfberry is a bright orangish-reddish berry native to China. One source that analyzed how the berries are meant to work focused on its rich source of polysaccharides, which are trusted to improve immune function and increase total antioxidant activity in the body [7]. A rat study that looked at the effects of goji intake stated that it could ease “menopause-induced symptoms of anxiety,” adding that “these findings will be beneficial for the production of studies of natural herb-origin anxiolytic drugs in the future. [8]”


Another popular sleep-inducing herb is chamomile, as it has since been introduced to society in tea form. In terms of its calming effect, one source expounded on a Japanese study involving the administration of chamomile in rats. In the end, the rats supposedly fell asleep as quickly as those under a dose of benzodiazepine (i.e., a tranquilizing medication) [9].


Ashwagandha is an Ayurvedic herb with adaptogenic properties, meaning that it can help the body better respond to physical, emotional, and biochemical stressors. The effect of stress on the circadian rhythm cannot be ignored. As simplified by one source, “chronic or repeated exposure to a stressor leads to lasting adaptations of the body, e.g., in energy metabolism and may favor the development of metabolic or psychiatric disorders, both in humans and in rodents [10].”


Melatonin is a hormone in the pineal gland produced by the brain. Like many other aspects of our body, this one can be found in low counts as well. As a result, exogenous melatonin has been created to promote restful sleep. Generally speaking, small concentrations are trusted to go a long way, as anything in excess can produce a reverse outcome. Regarding its effect on the circadian rhythm, one piece noted that darkness prompts the pineal gland to produce melatonin, whereas light halts production. Hence, “melatonin helps regulate circadian rhythm and synchronize our sleep-wake cycle with night and day [11].”

Pyridoxine HCl

Pyridoxine HCl also referred to as vitamin B6, is believed to help metabolize fat and reduce water retention. One source insists that weight loss experts swear by this vitamin because of its weight loss abilities and because it can help produce serotonin and norepinephrine. The latter two hormones permit regulated mood and, in turn, may limit overeating and/or cravings [12].


5-hydroxytryptophan (5-HTP) is a chemical that later gets converted into the body like serotonin, which has been suggested for mood-regulating purposes. Matter-of-factly, serotonin is responsible for triggering phase changes while inhibiting light-induced phase shifts and modulating the sleep-wake cycle [13]. As hinted earlier, this hormone can also act as an appetite suppressant.


L-tryptophan is an essential amino acid that aids the body is producing proteins and brain-signaling chemicals. In all truth, the body uses this amino acid to create the above-mentioned 5-HTP chemical. To put things into a clearer context, when L-tryptophan is ingested, it breaks down into 5-HTP and later converted into serotonin or raises serotonin levels. Fascinating, isn’t it [14]?


GABA or gamma-aminobutyric acid is a chemical made by the brain that carries anti-seizure and anti-anxiety effects. Its ability to unveil either its excitatory or inhibitory side depends on the circadian phase. In another way, GABA can either synchronize or destabilize cellular circadian rhythms and thus, plays a fundamental role in our sleep-wake cycles [15].


L-theanine is the last of the amino acids with anxiolytic and anti-stress properties. Interestingly, when combined with GABA, studies have reported positive outcomes. Specifically, the duo has been shown to encourage sleep, ultimately restoring one’s sleep to normal levels (both time- and quality-wise) [16].


Frequently Asked Questions (FAQS)

What is the circadian rhythm?

Circadian rhythm is a 24-hour cycle within our body’s internal clock that helps to execute essential functions and processes. One such process is the sleep-wake cycle, which consists of hours of wakefulness and sleep as hinted in its name.

Is CircadiYin safe?

CircadiYin is perceived as a safe supplement to take because it includes all-natural or human-made ingredients associated with little to no adverse effects. Since the supplement’s fact has yet to be posted, we cannot confirm anything regarding its safety beyond this point.

How should CircadiYin be taken?

Each serving (i.e., 2 CircadiYin capsules) should be taken 30 minutes to one hour before going to bed with an adequate water source.

Does CircadiYin really work?

The creators of CircadiYin pledge that this formula has been created to address the root cause of unwanted weight gain and can rebalance the circadian rhythm. Although this supplement has garnered many successful results, each person’s experience might vary depending on several confounding variables.

What if CircadiYin does not work as suggested?

Given that not all supplements are designed to work for everyone, the team behind CircadiYin has since protected their supplement with a 60-day money-back guarantee. So, customer service can be contacted for a full purchase price refund if women and/or men fail to see desirable weight loss results or are incapable of remaining asleep. Here’s how:

  • Email: support@circadiyin.com.
  • Return Address: CircadiYin c/o ShipOffers, 37 Inverness Dr. East #100, Englewood, Colorado, 80112, USA

What does each CircadiYin purchase include?

Alongside each CircadiYin supply, individuals will gain access to three bonus reports (free of charge) as summarized below:

Bonus #1. Circadian Priming Protocol

Inside the first bonus, individuals will discover proven methods trusted to prime their respective circadian rhythms.

Bonus #2. Circadian Supercharge Recipe Book

Inside the second bonus, ideal recipes for fat burning will be introduced while emphasizing one’s sleep cycles.

Bonus #3. 7 Day Circadian Detox

Finally, the third bonus in many ways resembles the first bonus, but it has been narrowed down into a 7-day plan with precise instructions on how to eat/drink to prime the circadian rhythm.

How much does CircadiYin cost?

Each CircadiYin bottle contains 60 capsules to be split into 2-capsule serving sizes daily. With supplements like this that require reparation before protection, time is crucial. Hence, to encourage bulk purchases, the following discounts have been offered:

  • 1 CircadiYin bottle: $69 each + S&H
  • 3 CircadiYin bottles: $59 each + free S&H
  • 6 CircadiYin bottles: $49 each + free S&H

Final Verdict

Ultimately, CircadiYin has been formulated to repair a broken/poor functioning circadian rhythm, which is trusted to drive metabolic rates. This strategy towards attaining weight loss endeavors has been proven, which is reassuring for us. Similarly, the ingredients found in this formula either directly or indirectly modulate the circadian rhythm, with others focusing solely on weight loss. That’s not all. The idea for this formula also considers stress relief, which is a common issue needing utmost support in today’s day and age.

As much as the foundation for CircadiYin is strong, its entirety is relatively weak. To be precise, it is unclear who is responsible for this formula. Furthermore, we have yet to find a supplement facts outlining the concentrations per ingredient. These pieces of information allow us to assess factors including transparency, effectiveness, safety, and value for the price, among many others. In keeping with everything that has been laid out in this piece, we encourage consumers to verify ambiguities with customer service before proceeding.


[1] https://www.nhlbi.nih.gov/health-topics/circadian-rhythm-disorders

[2] https://www.thefreelibrary.com/Baical+skullcap+and+its+effects+on+sleep-wake+regulation.-a0275312593

[3] https://amerisleep.com/blog/magnesium-and-sleep/

[4] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7585905/

[5] https://pubmed.ncbi.nlm.nih.gov/20171069/

[6] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5542920/

[7] https://www.medicalnewstoday.com/articles/322693

[8] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7585160/

[9] https://www.webmd.com/diet/features/natural-good-sleep-tips-on-melatonin-valerian#1

[10] https://www.sciencedirect.com/science/article/pii/S2352289516300194

[11] https://www.sleepfoundation.org/melatonin

[12] https://www.callaslimspa.com/blog/what-to-expect-from-b6-injections-a-guide-to-b6-injections/

[13] https://www.scielo.br/j/pn/a/zswJ838QwFC9Ws6q374ZBLS/?lang=en

[14] https://accurateclinic.com/accurate-education-l-tryptophan-5-htp-5-hydroxytryptophan/

[15] https://accurateclinic.com/accurate-education-l-tryptophan-5-htp-5-hydroxytryptophan/

[16] https://pubmed.ncbi.nlm.nih.gov/29560549/


The news and editorial staff of Sound Publishing, Inc. had no role in the preparation of this post. The views and opinions expressed in this sponsored post are those of the advertiser and do not reflect those of Sound Publishing, Inc.

Sound Publishing, Inc. does not accept liability for any loss or damages caused by the use of any products, nor do we endorse any products posted in our Marketplace.