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SLEEPER - GN Laboratories

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With Sleeper, you'll need less rest and will be ready for the next gruelling workout faster, to gain muscle mass and strength faster than ever before.

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27,43 €

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0.31 kg
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Sleeper delivers everything you need for a healthy and restful sleep and supports your recovery by an increased growth hormone production, a reduction in catabolic cortisol levels and many other important factors. With Sleeper, you'll need less rest and will be ready for the next gruelling workout faster, to gain muscle mass and strength faster than ever before.

Product Highlights:

  • Promotes a healthy and restful sleep and can effectively counteract sleep problems and insomnia
  • Dramatic improvement in sleep quality
  • Can helps you to fall asleep easier
  • Promotes a longer and more restful slow-wave sleep phase
  • Contains 3 mg Melatonin per serving
  • Can relieve muscle pain and sore muscles
  • Promotes a faster and better natural recovery of your muscles during your sleep
  • Can dramatically increase your body's natural growth hormone secretion by up to 600% for a faster recovery and faster gains
  • Can increase your IGF-1 levels and inhibit your body’s endogenous myostatin production for a faster recovery and faster gains
  • Can prevent a stress-related reduction of your testosterone levels and may even boost your natural testosterone production
  • May lower exercise and stress-related elevated levels of the catabolic hormone cortisol
  • In contrast to hormonal or pharmaceutical sleep support products Sleeper will not induce morning drowsiness or daytime fatigue

Why is a healthy and restful sleep so important?

By now even the last strength athlete and bodybuilder should be aware of the following: during intense and brutal workouts in the gym, we only set a stimulus for gains of strength and new muscle mass. The actual growth will take place when we rest and recover from our workouts. In other words, this means that without sufficient rest and recovery, there can be no increase in mass and strength. How seriously athletes take their recovery is shown by the fact that hardly any strength athlete or bodybuilder would even think about giving up his post-workout shake or subsequent protein meals. Unfortunately, most people overlook the fact that a healthy and restful sleep is just as important for a quick and complete recovery. During sleep, when our body is at rest, the most important repairs take place and without those repairs no increase in strength or muscle mass would be possible. And without a good night's sleep, we will not be able to perform at our maximum during our next workout to maximize gains of strength and muscle mass.

With our hectic lifestyle, adequate sleep is no more than a dream for most of us. We renounce sleep because we have so much to do or are afraid of missing out on something. We even try to eliminate our fatigue with the help of coffee or more aggressive stimulants. And because of the stress many of us are exposed to, the quality of the little sleep, we get, is far less than optimal.

If you want to achieve maximum gains and build the body of your dreams, you can not go on like this! Since there are countless committed and potentially successful strength athletes and bodybuilders wasting a lot of their time in the gym, as they do not get enough restful sleep and rest for optimal gains in strength and muscle mass, we got down to work and developed a sleep product that will help you to reach your full potential, while at the same time being more alert, rested and productive in your daily life.

The result of our efforts is Sleeper - the most complete sleep and recovery supplement that has ever left our lab. Sleeper will help you fall asleep faster and sleep better with the power of natural and safe ingredients. At the same time, Sleeper will help you to have a deeper and more restful sleep, which means that you can achieve maximum rest and recovery with less sleep in order to maximize your growth and performance in the gym, at work and in your daily life.

But we would not be GN Laboratories if Sleeper was "just" a sleep support product. That's why we have chosen ingredients that will not only promote a healthy and restorative sleep, but also actively support your recovery and muscle growth by using a variety of different biological pathways. These pathways include an increase of the natural secretion of your body's own anabolic and recovery promoting hormones such as HGH and IGF-1. In men, these ingredients also counteract a stress-related reduction in testosterone levels and may even increase them. In addition to this, Sleeper can reduce increased catabolic cortisol levels caused by intensive workouts and/or stress, thereby creating an anabolic, recovery promoting, and muscle mass and strength building environment in your body, ultimately leading to a faster recovery and faster gains. And as an added bonus, Sleeper can not only relax your mind but your hard pressed muscles as well, alleviating workout related muscle pain and potential muscle soreness to help you to get ready for your next gruelling workout faster.

If you want to speed up your recovery and optimize your performance while maximizing your strength and muscle gains, Sleeper is what you're looking for!

On which active ingredients is the unique effect of Sleeper based?

When developing Sleeper, we combined the most potent natural ingredients to support a healthy and restful sleep, with a special focus on active ingredients that also promote a rapid optimum recovery and maximum gains in muscle mass and strength through other mechanisms as well. It was also very important for us to combine active ingredients that work together synergistically and mutually reinforce each other in their effects.

It was particularly important to us that Sleeper contains only natural and safe ingredients, as the focus of this product is on supporting and promoting a natural, healthy sleep. In order to show you that these are not just the same old empty promises you may have become used to from other supplement manufacturers, we will take a look at each ingredient, including its proven effects in the following sections.

Gamma-Aminobutyric Acid (GABA)

Gamma-aminobutyric acid, better known by the abbreviation GABA, is an amino acid that can be produced by your body to some extent and that does not occur in food. GABA can acts as a strongly inhibitory neurotransmitter in your brain that is able to activate the so called GABA receptors. An activation of these receptors will lead to an inhibition of the transmission of stimuli at the nerve endings in your brain, resulting in a calming effect. This centrally calming effect will promote a deeper and more restful sleep that will support your recovery and make you feel more refreshed and energized the next morning, which of course will have a very positive effect on your workouts.

By the way, many pharmaceutical tranquilizers, including the highly potent Valium, unfold their calming effect by mimicking the body's own neurotransmitter that binds to the GABA receptors. This shows the potential for manipulating the GABA metabolism when it comes to promoting a healthy and restful sleep. To prevent misunderstandings, it should be mentioned that a GABA supplementation is safe and does not entail the addictive potential or any other side effects of prescription sedatives. In addition, GABA has a whole series of other interesting effects that can further promote and accelerate your recovery after hard workouts. These include the fact that GABA can relieve muscle soreness and exercise induced muscle pain, which will not only makes it easier for you to fall asleep after gruelling workouts, but will also help you to get fit for the next intense workout faster. In addition to this, GABA is able to significantly reduce the levels of the catabolic stress hormone cortisol that will be inevitably raised by your intense workouts. This is of utmost importance for your recovery as cortisol promotes a muscle breakdown and thereby prevents an anabolic, muscle building and recovery promoting environment in your body. So, lowering your cortisol levels will help your body to start repairing muscle damage caused by your workouts faster and promote the growth of new, stronger muscle fibres.

As a special bonus a GABA supplementation can increase your body’s natural nocturnal growth hormone secretion by a staggering 600%. When you realize that HGH, along with testosterone and IGF-1, is among the body's most anabolic hormones and is particularly involved in the recovery of your muscles after hard and intensive workouts, it quickly becomes clear that Sleeper is so much more than just a supplement to support a restful sleep.

Valerian root extract

Valerian root extracts have been used since ancient times as a natural remedy for relieving stress and treating insomnia and many other problems. Meanwhile, numerous scientific studies have clearly demonstrated these effects of valerian, and it is not without reason that valerian is by far the most widely used natural remedy for supporting a healthy sleep. Valerian will primarily help you to fall asleep and can thereby alleviate problems falling asleep. This effect is based on a whole series of individual effects, which include, among other things, a central sedative effect, as well as an inhibition of the activity of motor nerve cells. The central sedative effect is based, among other things, on a compound called deoxysaccharosyl-olivil, which can bind to the andenosine-1 receptors in your brain and, similar to adenosine, causes fatigue. Interestingly, deoxysaccharosyl-olivil has the ability to displace caffeine, which can attaches to the same receptors. In other words this means that valerian can effectively prevent sleep disorders based on excessive caffeine consumption.

The aforementioned inhibition of motor nerve cell activity can help relax your potentially uptight muscles after hard workouts, which will help with recovery and will support a body wide relaxation that promotes falling asleep. Although valerian is primarily used to help to fall asleep, it can prolong periods of deep sleep and significantly improve the quality of your sleep, especially if you take valerian over several days in a row.

Compared to synthetically produced pharmaceutical sleeping pills, valerian has the advantage that it will not cause any dependencies, nor cause drowsiness, which is frequently observed with sleeping pills. You will also not suffer from a so called daytime fatigue that is so widespread with sleeping pills.

Mucuna Pruriens extract

Mucuna Pruriens is rich in natural l-dopa, an amino acid that can cross the blood-brain barrier and be converted into dopamine in your brain. Dopamine is a neurotransmitter known as "happiness hormone" that can help relieve stress. Since stress and worry are among the biggest enemies of a healthy and restful sleep, it can thus improve the quality of your sleep. However, the l-dopa contained in Mucuna Pruriens can do much more than just promote a restful sleep and a faster and better post-workout recovery. L-dopa stimulates the release of the growth hormone releasing hormone known as GHRH, which increases your body's own growth hormone secretion during sleep by up to 125%. HGH will speed up repair and growth of muscle tissue after hard workouts and dramatically accelerate your post-workout recovery. In addition, the nocturnal growth distribution contributes significantly to a better and more restful sleep. But that's not all. Scientific studies have shown that l-dopa can counteract a stress-induced reduction in natural testosterone levels in men, especially in situations characterized by severe physical or mental stress. It may even increase your testosterone levels by up to 27% by increasing the release of the LH hormone.

At the same time, l-dopa can counteract a stress induced increase in catabolic cortisol levels that occurs during and after intensive workouts. Research has shown that l-dopa can reduce this increase by up to 60%, which, in combination with the higher testosterone levels mentioned above, will give you a much faster and better recovery and accelerate your gains in strength and muscle mass. Considering the fact that intense and brutal workouts will mean a lot of physical stress for your body, you should quickly realize how positively these properties of l-dopa can affect your recovery.

Ashwagandha root extract

Ashwagandha is a medicinal plant with adaptogene effects that has been used for centuries in the field of Ayurvedic medicine. Ashwagandha has a calming, stress-reducing effect and a sleep-promoting effect. It is particularly interesting that Ashwagandha not only promotes falling asleep easier, but will also have a positive effect on the quality of your slow-wave sleep phases that are so important for your recovery and many other things.

Amongst other things, these beneficial effects on your sleep are due to the fact that active ingredients in Ashwagandha, known as withanolides, mimic the activity of a neurotransmitter in your brain, which reduces the activity of neurons and thus has a calming effect.

But Ashwagandha still has a whole host of other positive attributes that can boost and accelerate your recovery. Studies have shown that Ashwagandha can reduce elevated catabolic cortisol levels by up to 27%. This is especially important during recovery from hard and intense workouts that cause severe physical stress on your body and almost inevitably result in an increased cortisol release. Ashwagandha can thus help you to get back to an anabolic, muscle building state faster. In addition, Ashwagandha can prevent a stress-related reduction in testosterone levels in men and significantly increase your natural testosterone production (3), resulting in a faster recovery and faster gains of muscle mass and strength.

This acceleration of recovery was demonstrated by clinical studies (3) conducted with athletes showing a reduction in creatine kinase levels, which are a marker of muscle damage.


L-theanine is an amino acid that occurs naturally in tea and is not contained in any other food. From a chemical point of view, theanine is a derivative of the amino acid glutamine, which is able to cross the blood-brain barrier and to exert its effects directly in the brain. In the human brain, l-theanine can increase the release of the neurotransmitters dopamine, serotonin, and GABA, which - as shown in previous sections - all have positive effects on your sleep and your recovery after hard and intense workouts. L-theanine works together synergistically with many of the other ingredients of Sleeper and further enhances their effects. In addition, theanine has positive effects on the alpha waves in your brain that are so important during sleep. These alpha waves promote a restful relaxation and can significantly improve your sleep quality, which will results in an increased ability to concentrate on the following day, allowing you to focus better on your workout.

In addition, alpha waves inhibit the release of cortisol and other catabolic hormones and this can noticeably accelerate both your recovery and your muscle growth, as already mentioned several times.


L-tryptophan is an essential amino acid that occurs naturally in food and is needed by your body as a substrate for the production of a whole range of important neurotransmitters and hormones of your brain metabolism. Tryptophan is one of the few amino acids that are able to cross the blood-brain barrier. Once in the brain, tryptophan is used, among other things, to produce the neurotransmitter serotonin. Serotonin can not only improve your mood and help against depression, but also help to regulate a healthy sleep. Thus, it is not surprising that a tryptophan deficiency can result in sleep disorders, which can be effectively counteracted by an isolated administration of free tryptophan. Serotonin is also important for a healthy sleep, because it is the raw material from which the so-called sleep hormone melatonin, which is responsible for the regulation of the sleep-wake rhythm, is produced in your brain. An increase in your serotonin levels will also result in an increase in your melatonin levels, promoting a healthy and restful sleep. Melatonin not only promotes falling asleep, but also prolongs the REM and slow wave sleep phases that are so important for the recovery of your body.


5-hydroxytryptophan, better known by the acronym 5-HTP, is a derivative of the amino acid tryptophan that occurs naturally in some food and is also the intermediate product formed during the synthesis of serotonin from tryptophan in your brain. 5-HTP can cross the blood-brain barrier, and can be converted to serotonin or melatonin even faster and more easily than tryptophan, since it is one synthesis step closer to serotonin than tryptophan. How effective 5-HTP is in this regard is demonstrated by the fact that this compound was the drug of choice for the treatment of a serotonin deficiency in the medical field prior to the development of selective serotonin reuptake inhibitors. To date, 5-HTP is used in the medical field to treat sleep disorders, as it stimulates the natural melatonin production and promotes a healthy REM sleep, which is so important for recovery, resulting in a shorter necessary sleep time and a better sleep quality. Essentially everything said before about tryptophan also applies to 5-HTP. However, 5-HTP can do far more to promote a faster and better recovery, as it directly affects the body's own production of a number of important hormones that play important roles during recovery and muscle building. Scientific studies conducted with athletes found out that 5-HTP will promote your recovery and will thus enable you to perform more frequent and intensive workouts. In addition to increasing the body's own growth hormone production, 5-HTP can also increase your levels of IGF-1, which is the most anabolic endogenous growth factor of your body. In addition, 5-HTP can stimulate the formation of satellite cells that fuse with muscle cells to promote and accelerate recovery and muscle growth.

Of particular interest is the fact that 5-HTP promotes the formation of endogenous follistatin. Follistatin is an endogenous myostatin inhibitor that inhibits the formation of myostatin. It is known that myostatin acts as a kind of natural brake for your muscle growth that a complete blockade of this inhibitor would allow for virtually unlimited muscle growth without natural genetic limits. Of course, 5-HTP does not go that far, but already a little less myostatin can work wonders when it comes to a better recovery and faster muscle growth.

We should probably mention that a combination of GABA and 5-HTP has been proven to be particularly effective in improving sleep quality, accelerating recovery, and promoting faster gains, as these two compounds are synergistically reinforcing each other in their effects.


Melatonin, which is produced by the pineal gland in the brain, is the natural "sleep hormone" of the human body. Melatonin is released primarily in the evening and is responsible for regulating the body's biological clock and the sleep-wake cycle. Sleep problems in general - and especially problems falling asleep - are often caused by an inadequate natural melatonin production, for which there may be numerous reasons. In addition to an age-related decrease of your natural melatonin production, other factors including stress, illnesses or trivial triggers like too much light in the evening may lead to an inadequate melatonin production. A Combination of compounds like 5-HTP and tryptophan that support your body’s natural melatonin production, and a low dosage of melatonin have been found to be the most effective way to alleviate sleep problems associated with an inadequate endogenous melatonin production.


  1. Shukla, KK. et.al. Mucuna pruriens improves male fertility by its action on the hypothalamus-pituitary-gonodal axis. Fertility & Sterility. 2009, Bd. 92, 6.
  2. Ahmad MK, Mahdi AA, Shukla KK, Islam N, Jaiswar SP, Ahmad S. Effect of Mucuna pruriens on semen profile and biochemical parameters in seminal plasma of infertile men. Fertil Steril. 2008, Bd. 90, 3.
  3. Wankhede, S., Langade, D., Joshi, K., Sinha, S. R., & Bhattacharyya, S, Examining the effect of Withania somnifera supplementation on muscle strength and recovery: a randomized controlled trial . (2015). Journal of the International Society of Sports Nutrition, 12(1), 43.


  • Titel:Bestes Produkt für einen guten Schlaf.
    Dieses Produkt hält was es verspricht. Es hat mir schon so oft geholfen falls ich mal nicht schlafen konnte.
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Recommended daily intake: Add 10 g powder to 200 ml cold water and shake it.


Zentraler hemmender Neurotransmitter als natürliches Beruhigungsmittel

Wir leben in einer Welt, in der wir ständig von Reizen überflutet werden. Lärm, visuelle Reize, Computerarbeit und Stress sind alles Faktoren, die leicht zur Überstimulation und Überlastung führen können. Das Burn-Out-Syndrom ist nahezu zur Volkskrankheit geworden und der Absatz von Psychopharmaka und Medikamenten, die einen "runterkommen" lassen, ist in den letzten Jahren rasant gestiegen. Nicht selten beginnen die Probleme bereits in der Kindheit. Kinderpsychologen und -ärzte können ein Lied davon singen. Immer häufiger haben die lieben Kleinen Konzentrationsstörungen, so dass sie weder Zuhause noch in der Schule gebändigt werden können und wegen eines Hyperaktivitätssyndroms behandelt werden müssen.

Die gute Nachricht ist, dass die Natur eigentlich für solche Fälle vorgesorgt hat und sich der menschliche Körper sein Beruhigungsmittel selbst herstellen kann - GABA.



GABA steht für Gamma-Amino-Buttersäure (a - acidi) und ist eine nichtessentielle Aminosäure, was bedeutet, dass es der Körper selbst - aus einer anderen Aminosäure (Glutamin) herstellen kann. GABA ist der wichtigste inhibitorische Neurotransmitter des Gehirns. Funktionell bedeutet dies, dass GABA die Übertragung von Signalen in den Nervenendigungen hemmt und somit eine sehr wichtige Schleusenwärterfunktion wahrnimmt. GABA findet sich in rund 30 Prozent aller Nervenzellen und bei Hemmung der Synthese kommt es zu Krampfanfällen. GABA ist somit das natürliche "Beruhigungsmittel" des Gehirns.

Im Alter kommt es zu einem Abfall der GABA-Spiegel und der GABA-Aktivität, was auch die Ursache für Erkrankungen des Alters sein dürfte, die mit Bewegungsstörungen und Krämpfen einhergehen, wie etwa Chorea Huntington.
Zusätzlich fördert es die Freisetzung von Wachstumshormon (GH - growth hormone), das eines der wichtigsten Hormone des Körpers ist und in der Hirnanhangdrüse produziert und ausgeschüttet wird. GH ist unter anderem für den Muskelaufbau wichtig und hat auch Anti-Aging- und viele krankheitsvorbeugende Eigenschaften.
Die Pharmaindustrie hat die beruhigenden Wirkungen von GABA natürlich längst erkannt, und es existiert eine Reihe von Medikamenten, die in den GABA-Zyklus eingreifen und die Wirkung nachmachen. Dazu gehören auch die meisten Tranquilizer und Schlafmittel, unter anderem auch die bekannteste Gruppe, die Benzodiazepine (der prominenteste Vertreter ist Valium). Auch Alkohol greift an den GABA Bindungsstellen im Gehirn an, was der Grund für seine zentral dämpfenden Wirkungen ist.



Wenn im Gehirn ein Mangel an GABA besteht, können, wie bereits angesprochen, verschiedene GABA-assoziierte Störungen auftreten. Die Einnahme von natürlichem GABA kann bei folgenden Erkrankungen und Symptomen helfen:

Angstzustände und innere Unruhe: GABA hat, im Gegensatz zu herkömmlichen Tranquilizern und Psychopharmaka KEIN Suchtpotential und auch keine der anderen Nebenwirkungen dieser Substanzen. Wenn GABA fehlt, sollte auch das von der Natur vorgesehene "Hausmittel" zugeführt werden.

Depressionen: Depressive Verstimmungen scheinen mit einem niedrigen GABASpiegel einherzugehen. Dies konnte auch bei Frauen, die an emotionalen Verstimmungen aufgrund eines prämenstruellen Syndromes litten, nachgewiesen werden. Die Auffüllung der GABA-Speicher kann die Stimmungslage deutlich bessern.

Krampfanfälle: Mit GABA können bestimmte Formen von Krampfanfällen unter Kontrolle gebracht werden, auch bei Kindern. Gute Erfolge sind auch bei der Anwendung von GABA nach Schlaganfällen zur Wiederherstellung von Gedächtnisfunktionen und der Sprachfähigkeiten erzielt worden.

GABA und Muskelaufbau: Es konnte wissenschaftlich nachgewiesen werden, dass GABA die GH-Ausschüttung fördert und somit den Muskelaufbau. Bei richtiger Einnahme und entsprechendem Training wird die Muskulatur durch einen geringeren Fettgehalt definierter und der Aufbau erfolgt rascher. Erste Erfolge können nach etwa acht Wochen nachgewiesen werden. Ein zweiter wichtiger Punkt ist, dass GABA schmerzhemmende Eigenschaften hat. Wettkampfsportler, die GABA beim Training zur Unterstützung einnehmen, berichten häufig, dass die mit dem Training verbundenen Schmerzen geringer sind bzw. die Schmerz-Toleranzschwelle höher ist.


Bedarf im Sport

Was diese Substanz für den Kraftsportler interessant macht ist dass die Einnahme von GABA zu einer erhöhten Ausschüttung von Wachstumshormon führen kann, mit einer Dosis von 5g pro Tag. Dabei berichten Athleten dass bei einer häufige Anwendung, kommt es lediglich zu einem leicht beschleunigten Fettabbau. Ein weiteres großes Thema ist, die deutlich verbesserte Schlafqualität. So scheint GABA bei vielen, besonders bei einer kurzen Nacht, gut zu wirken, so dass die Sportler trotz 4-5 Stunden Schlaf am nächsten Morgen frisch und ausgeruht sind. Als zu empfehlende Dosis gelten 3-4g GABA etwa 15-30 Minuten vor dem Schlafengehen. Symptome wie Müdigkeit am folgenden Tag, scheinen kaum aufzutreten. Tagsüber sollte kein GABA eingenommen werden, da man sonst einfach zu schläfrig wird.



  1. Julien, M. Robert: Drogen und Psychopharmaka; Spektrum Akademischer Verlag; 1934; ISBN 3-8274-0044-9
  2. Pharmakologie und Toxikologie, Lüllmann, Mohr, Wehling, Thieme Verlag, 15.Auflage 2003, ISBN 3133685155
  3. Pharmakologie und Toxikologie, Aktories et al., Urban & Fischer, 9.Auflage 2005

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