SKU: 5192026222

Core Nutritionals | ZZZ | Natural Sleep Formula

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Description

Core Nutritionals | ZZZ | Natural Sleep FormulaNight Time Recovery & Sleep Support 5 HTP Improves quality of sleep with no withdrawal effect Mucuna pruriens Improves GH release during sleep for better recovery L Glycine Aids in digestion and lowering blood sugar Sleep Aid & Recovery You know the feeling: heavy weights, a treadmill, and looking up at the clock every minute. Its not your dietyour food journal is so detailed it makes engineers blush. Its not your supplementationyoure using the Core

Night-Time Recovery & Sleep Support

  • 5-HTP - Improves quality of sleep with no withdrawal effect
  • Mucuna pruriens - Improves GH release during sleep for better recovery
  • L-Glycine - Aids in digestion and lowering blood sugar

Sleep Aid & Recovery

You know the feeling: heavy weights, a treadmill, and looking up at the clock every minute. It’s not your diet—your food journal is so detailed it makes engineers blush. It’s not your supplementation—you’re using the Core lineup. The real issue was a night of tossing and turning, with snoring and a barking dog. If recovery is the key to success, Core ZZZ is the locksmith. This product is designed to maximize recovery, including only effective recovery agents at proper serving sizes to remove guesswork. Its ingredients were chosen for the pathways they target, ensuring every physiological pathway is covered. No more tossing nights or wasted workouts—make recovery the priority by placing Core ZZZ at the center of your supplement lineup.

Full Science

If recovery is the key to success, then say “hello” to the locksmith. Core ZZZ is a perfectly-designed product with a single goal in mind: maximizing your recovery. We have included only the best and most effective recovery agents, at the proper serving sizes, to take the guesswork out of a good night’s rest. We have also specifically chosen these ingredients for the pathways they target, ensuring that every possible physiological pathway for recovery is covered.

No more tossing nights and no more wasted workouts – put recovery at the top of your list by putting Core ZZZ at the center of your supplement lineup.

Mineral blend (Vitamin B-6 (as Pyridoxine HCL), Magnesium (as Magnesium aspartate), and Zinc (as Zinc monomethionine)):

Sleep is important, but sleep is not important for its own sake. Rather, we sleep because of the collection of physiological processes that it enables: the repair of tissue, the biosynthesis and release of hormones, and so on. While each of the individual ingredients in our mineral blend is important in this regard, the formulation as a whole has previously been demonstrated to have tangible physiological effects.

In a randomized, double-blind, placebo-controlled study, 27 NCAA football players consumed a supplement containing Vitamin B-6, Magnesium, and Zinc, or placebo, for an 8-week period. Measurements for free testosterone, IGF-1, and muscle strength and power were taken at the conclusion of the study. The authors found statistically significant increases to all measured indices, with a particularly high spike in free testosterone as compared to placebo.

Gamma-aminobutyric acid (GABA):

GABA, known technically as, γ-Aminobutyric acid, is a potent depressive and the chief inhibitory neurotransmitter in the human brain. As GABA plays a critical role in the sedative and depressive functions of the brain, GABA receptor subtypes – principally GABAA – have been positively associated with the regulation of the sleep-wake cycle.

Given its pivotal status in the regulation of sedation and sleep, both GABA itself as well as GABA agonists (GABAergics) have been researched for their capacity to modulate sleep and mood. A 1996 animal model study established that stimulation of the GABAA receptor-subtype through exogenous GABA intake led an increase in the length of slow-wave sleep. A further 2006 study found that increasing plasma levels of GABA through supplementation was associated with regulation of the posterior hypothalamus “sleep-wake switch,” a physiological mechanism used to control sleep in mammals.

In addition to GABA’s potential role in the regulation of sleep itself, additional research has uncovered that GABA may potentiate certain benefits of deep sleep – namely, the increase in plasma growth hormone. The first study to demonstrate GABA’s growth-hormone potentiating effect was a 1980 study in 19 healthy subjects. This placebo-controlled trial found that a 5 gram serving of GABA significantly increased plasma levels of growth hormone as compared to controls. A further study in 2008 demonstrated similar results, with 50% increases in plasma levels of certain growth hormone isoforms in response to GABA administration in healthy subjects.

L-Glycine:

L-Glycine is a non-essential amino acid, so-called because the human body is capable of synthesizing glycine from sources internal to the body (serine). Like many other amino acids, glycine possesses physiological effects independent of its function as a ‘building block’ to protein. In glycine’s case, its physiological effects stem from its role as a neurotransmitter in the human brain.

Three methodologically-sound studies have investigated glycine’s effect on sleep and sleep quality in humans – and each used the same serving size as that found in Core ZZZ, 3 grams. In studies conducted in 2006 and 2007, ingestion of 3 grams of glycine prior to sleep was found to have both subjective and objective positive effects on sleep. Subjectively, participants reported more satisfactory sleep, less daytime sleepiness, and improved cognitive function. Objectively, PSG measurements revealed less latency to sleep onset and deep sleep. These results were confirmed in a more recent 2012 study which focused principally on glycine-dependent improvements to daytime cognitive function in sleep-deprived volunteers.

Overall, these human trials suggest a possible role for glycine in the regulation of beneficial sleep cycles at a serving size of 3 grams.

L-Tryptophan

L-Tryptophan is an essential amino acid, and one of the most critical in the human body. Tryptophan is critical because it is the biological precursor to both serotonin (one of the body’s principal neurotransmitters regulating mood, appetite, and sleep) and niacin (a vitamin and a crucial biological intermediate).

Among dietary supplements or ingredients purported to regulate the sleep-wake cycle, tryptophan is perhaps the most well-studied. The body of literature pertaining to tryptophan’s sedative effects is vast and varied, reaching back at least 40 years and featuring hundreds of articles. Despite the enormity of this body of literature, and therefore potential for disagreement or conflicting data, scientific consensus exists that tryptophan exerts positive effects on the regulation of the sleep wake cycle in humans – evinced by placebo-controlled trials in humans.

One such placebo-controlled, double-blind trial involved 10 healthy volunteers ingesting either 1.2 grams or 2.4 grams of tryptophan prior to sleep. Blood and urine measurements were taken at regular intervals, and sleep was measured both objectively (latency to sleep) and subjectively using the Stanford Sleepiness scale. Both serving sizes of tryptophan were highly correlated with a significant reduction in sleep latency and significant improvements to subjective sleep quality on the Stanford Sleepiness Scale.

Results such as this have been reproduced in dozens of clinical trials involving healthy/normal and sleep-disturbed subjects, men and women, younger and older participants, and featuring serving sizes as low as 500mg and high as 15 grams. These studies nearly universally reflect that exogenous tryptophan supplementation is positively correlated with an improvement in sleep quality and an objective reduction in sleep latency – with the best effect’s resultant from a 1 gram to 1.5 gram serving size.

L-Ornithine HCL:

L-Ornithine is a non-protein amino acid, meaning that, unlike most other amino acids, it is not involved in the production of proteins and is not encoded by DNA. In humans, ornithine is most commonly associated with the urea cycle, though recent research has revealed a potential role for ornithine in the regulation of sleep and arousal.

Though data on ornithine is not extensive, recent research has demonstrated that it may play a role in both objective and subjective assessments of sleep quality in humans. In a double-blind, placebo-controlled, randomized trial, 400mg or placebo was administered to 52 healthy adults experiencing mild fatigue. Ornithine was consumed consecutively for 8 weeks, with measurements for cortisol being collected – along with both subjective and objective measures of sleep quality.

At the conclusion of the trial, most participants experienced both subjective and objective improvements to the quality of their sleep. The researchers also noted that ornithine supplementation resulted in a small but statistically significant reduction to plasma concentrations of cortisol.

Mucuna pruriens Extract (seed) (50% L-dopa):

Mucuna pruriens is a hanging or climbing plant endemic to India and sub-Saharan Africa. The plant has been used extensively in the Indian traditional medicinal system known as Ayurveda for a number of purposes, including virility and gastrointestinal disorders.

In the context of recovery, data is limited but promising. In a 2012 study, 18 healthy men and women with impaired sleeping were given a supplement containing Velvet Bean (MP) for 28 days. At the conclusion of the study, the participants completed the well-regarded and industry-standard Pittsburgh Quality Sleep Index.

The authors note that supplementation with the Velvet bean-containing product improved the reported scores in every category of the PQSI. Many categories saw improvements of over 50%. Moreover, the authors noted both that Velvet Bean, not the other ingredient in the studied supplement, was the bioactive compound responsible for these effects, and that Velvet Bean has been demonstrated to improve GH release during sleep in other independent trials.

L-Theanine:

L-Theanine is a non-protein amino acid found mostly in green tea. The structure of L-Theanine closely resembles L-glutamic acid and has a mechanism of action they may be mediated through glutamate receptors, a possibility supported by its partial co-agonistic effect on the N-methyl-D-aspartate receptor. Due to L-Theanine being a widely ingested phytochemical during normal every day life, it has the potential to be an ingredient in many nutraceutical applications due to its proposed benefits on cognitive function and neuroprotective properties. L-Theanine has been studied in several instances on its benefits in these areas. In humans, L-Theanine has been shown to play a beneficial role in tasks requiring heightened focus and attention as well as positive effects on mental state, including improved sleep quality. A four week, randomized, placebo controlled and double-blind study consisting of 30 individuals assessing L-Theanine’s influence on stress related symptoms and cognitive function resulted in positive outcomes. At 200mg per day results revealed positive benefits sleep quality, decreased sleep disturbance, and reduced need for sleep medication. For cognitive function, verbal fluency and execution during concentration required tasks was also increased. The benefits of L-Theanine have mostly been studied for its acute effects on the user. Long term effects can likely be seen by how the acute affects influence changes in lifestyle. However, studies like this are promising on the benefits of L-Theanine.

5-HTP (5-hydroxytryptophan):

Serotonin has often been at the center of the discussion in the regulation of sleep. This “feel good” hormone has been shown to be essential in many physiological functions including circadian rhythm, thermoregulation, cognition, and nociception. When serotonin levels are low, it is critical to find ways to restore balance. Supplementation, to help with recovery and sleep, can be beneficial in reducing stress and restoring this balance. 5-HTP (5-hydroxytryptophan) is a natural chemical compound that has been shown to benefit certain aspects of health, including mental function and sleep quality as it is a natural precursor to serotonin in the brain. 5-HTP passes the blood brain barrier easily, making it very efficient in its action. 5-HTP, when combined with other nutrients such as GABA, may be effective at decreasing time required to fall asleep and improving sleep quality and duration.

Melatonin:

Irregular sleep is a problem that is common amongst the population and most are often searching for remedies to improve sleep quality and circadian rhythms. Melatonin is a neurohormone that is secreted by the pineal gland known for its sleep regulation properties. Its secretion is often suppressed by light, which when this occurs can often disrupt normal sleep patterns. When sleep patterns are disrupted and irregular, it has the ability to increase risks of certain health issues and premature aging. Supplementation exerts most of it benefits through decreased sleep latency and increased onset of sleep. This can also be related to its ability to work with the biochemistry and decrease body temperature in users. Supplementation with melatonin is the most efficient way to increase melatonin levels prior to sleeping. However, diet and improvements in quality of life are also ways to improve normal melatonin secretion as well as normal circadian rhythm for better quality sleep.

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SKU: 5192026222

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4.6 ★★★★★
Based on 1457 reviews
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Shianne Whipple
Phoenix, US
★★★★★ 5
Strong Omegaverse Comfort and a Attention Grabbing Plot
Format: Kindle
Jillian West never misses when it comes to Omegaverse, and Not Ready is no exception. This story was the perfect blend of cozy comfort and emotional depth while still delivering a strong plot. Vale is such a powerful heroine, she is strong, capable, and determined but I love that she still allows her pack to love and take care of her. It’s that balance of independence and vulnerability that makes her so relatable. The relationship dynamics were amazing: Bishop is steadfast and completely head over heels, Mercy is skeptical but protective in his own way, and Holt is the hesitant one whose slow fall is so satisfying to watch unfold. The romance hits that sweet spot between insta-love and cautious build, keeping me hooked the entire way through. And that ending. Oh my god, the cliffhanger! I need the next book in this duet immediately.
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Reviewed in the United States on August 28, 2025
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NLB
Omaha, US
★★★★★ 5
Interesting
Format: Kindle
So I will say I enjoyed the story, for sure had its moments where it dragged but it was a great story. I really liked that omegas picked their alphas/make the pack. Normally the Alphas make it and the omega fits in with them which is great but I enjoyed this new version where all the power basically went to the omega. It was a nice change of pace. I can admit some of the weird bedroom stuff with her being pregnant was odd, it’s really not hard to do stuff when pregnant (I know I’ve had two and it’s normal and even encouraged at the end especially if you want the baby out). But I like the story as a whole and will read the second, I do hope the next one isn’t dragged bc it stopped being action or tense after she met her alphas and I don’t think it was brought up or properly done when they tried to do it. More sweet after she left.
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Reviewed in the United States on November 11, 2024
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Altairjones
Lake Worth, US
★★★★★ 3
I’m a little disappointed.
Format: Kindle
I usually like Jillian West’s books but this one was missing a lot for me. The pregnancy didn’t come across as real. She’s on her feet for 12 hour days but is perfectly healthy at 8 months pregnant? Yet the week she moves in all of a sudden she’s not? She is planning on actually running during one of the plot buildups. But at 8 months pregnant that’s incredibly hard to do. The lack of breathing ability and lung space, the change in body center, mass, and gravity. All of it prohibits running, unless you’re an athlete this didn’t come off as at all realistic. I didn’t feel any connection with the alphas. There wasn’t any emotional connection. It could be because of the tense it was written in. But I didn’t get any deep feelings out of this. It came across as checking off boxes. Even the spicy scenes weren’t really believable for me. I wanted to see them fall for her, and it just kind of all fizzled. Even Bishop. One thing I did really like was the ending. I did not see it coming and I’m interested in reading book two because of it. But on the whole this book was mostly disappointing for me.
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Reviewed in the United States on March 16, 2024
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Melissa Williams
Carnegie, US
★★★★★ 4
4.25 stars
Format: Kindle
Vale is an 8 month pregnant omega working as a waitress at a strip club and a cam girl. She starts to get very creepy vibes from a regular at the club, and her baby daddy ghosted her. She has had an online relationship with a man named Bishop through her cam girl status. One night, bishop was paying to watch her sleep and ansthe creepy regular Andrew break in and watch her sleep he tells vale to come to him at his business now. She flees and finds herself at a large security company with some.hot of alphas who are there to help her. This imegaverse is a little different than I have read, but I am thoroughly enjoying it. Vale is not a traditional omega she was raised by a single beta mom, and the alphas are not normal alphas they have never really loved pack life. But they are ruthless mercenaries. They need her, and she needs them. I love the aspect of the stalker and now the plot twists at the end, so so good. Sometimes, it seemed a little slow and stale mated, but since this a duet, I think It was just her starting to have Vale get to know her alpha suitors. Cliffhanger for sure with this one.
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Reviewed in the United States on September 9, 2024
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Austin & Cambria
Charlottesville, US
★★★★★ 5
That ending 😫
Format: Kindle
I fell into a false sense of security and really thought this was gearing towards a happy ending. Then I realized there’s no work they don’t punish Andrew. I really liked Vale’s character. I don’t normally read books with pregnancy but going into this knowing she was pregnant made it more enjoyable for me. I loved Bishops devotion to her and her happiness. I also loved that Holt and Mercy couldn’t fight their attraction to her. I love scent matches so very much. I’m so curious to see how this duet will end up. And I need to pay more attention and notice that a book I’m starting is a duet to begin with lol
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Reviewed in the United States on February 21, 2025

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