Jump to content

Sleeper - 300g

Original price €32,90 - Original price €32,90
Original price €32,90
€32,90 - €32,90
Current price €32,90
Prices incl. VAT plus shipping costs
Notify me when in stock
  • PayPal
  • Amazon
  • Visa
  • Mastercard
  • American Express
  • Klarna

Sleep is probably one of the most important aspects when it comes to health or optimal regeneration after training. In addition to nutrition and sports, it is above all the rest phases that can contribute decisively to take place in the gym, the more important it is to get the maximum out of his sleep. For this reason, GN has developed the new Sleeper, whose innovative active ingredient matrix ensures that sleep no longer has to worry you. Sleeper by GN Laboratories - because in the end only results count.

  • Innovative active ingredient matrix
  • Effect proven by numerous studies
  • Improves various parameters of sleep
  • Easy to dose
  • Highest quality - Made in Germany
Nutritional values and ingredients
Compositionper 10g%(NRV*)
Sleeper Matrix:
gamma-aminobutyric acid (GABA)3000 mg**
Glycine1500 mg**
L-tryptophan500 mg**
Valerian root extract500 mg**
Ashwagandha root extract (KSM 66®)300 mg**
thereof withanolides15 mg**
Melatonin0,5 mg**
Zinc MA Matrix:
Magnesium (as magnesium citrate)150 mg40%
Zinc (as zinc citrate)10 mg100%
Vitamin B63.5 mg150%

Ingredients: gamma - aminobutyric acid, glycine, natural flavor, magnesium salts of citric acid, L - tryptophan, melantonin, valerian root extract 10:1 (Valeriana officinalis), inulin (chicory), ashwagandha root extract 12:1 KSM 66® (Withania somnifera, contains 5% withanolide), flavor, beet powder (Beta vulgaris), zinc citrate, sweetener: sucralose, pyridoxine hydrochloride.

*Percent of the recommended daily intake according to Regulation (EU) No. 1196/2011.

**No nutrient reference values (NRV) available.

Consumption recommendation
Mix 1 scoop (10 g) of powder in 200 to 250 ml of water 30 minutes before bedtime.

Not recommended for use by persons under 18 years of age. Do not exceed the specified recommended daily intake. Food supplements are not a substitute for a balanced and varied diet and a healthy lifestyle.

  1. Gottesmann C. GABA mechanisms and sleep. Neuroscience. 2002;111(2):231-9. doi: 10.1016/s0306-4522(02)00034-9. PMID: 11983310.
  2. Yamatsu A, Yamashita Y, Maru I, Yang J, Tatsuzaki J, Kim M. The Improvement of Sleep by Oral Intake of GABA and Apocynum venetum Leaf Extract. J Nutr Sci Vitaminol (Tokyo). 2015;61(2):182-7. doi: 10.3177/jnsv.61.182. PMID: 26052150.
  3. Sutanto CN, Loh WW, Kim JE. The impact of tryptophan supplementation on sleep quality: a systematic review, meta-analysis, and meta-regression. Nutr Rev. 2022 Jan 10;80(2):306-316. doi: 10.1093/nutrit/nuab027. PMID: 33942088.
  4. YAMADERA, W., INAGAWA, K., CHIBA, S., BANNAI, M., TAKAHASHI, M. and NAKAYAMA, K. (2007), Glycine ingestion improves subjective sleep quality in human volunteers, correlating with polysomnographic changes. Sleep and Biological Rhythms, 5: 126-131. https://doi.org/10.1111/j.1479-8425.2007.00262.x
  5. Shinjyo N, Waddell G, Green J. Valerian Root in Treating Sleep Problems and Associated Disorders-A Systematic Review and Meta-Analysis. J Evid Based Integr Med. 2020 Jan-Dec;25:2515690X20967323. doi: 10.1177/2515690X20967323. PMID: 33086877; PMCID: PMC7585905.
  6. Zare Elmi HK, Gholami M, Saki M, Ebrahimzadeh F. Efficacy of Valerian Extract on Sleep Quality after Coronary Artery bypass Graft Surgery: A Triple-Blind Randomized Controlled Trial. Chin J Integr Med. 2021 Jan;27(1):7-15. doi: 10.1007/s11655-020-2727-1. epub 2021 Jan 8. PMID: 33420602.
  7. Pratte MA, Nanavati KB, Young V, Morley CP. An alternative treatment for anxiety: a systematic review of human trial results reported for the Ayurvedic herb ashwagandha (Withania somnifera). J Altern Complement Med. 2014 Dec;20(12):901-8. doi: 10.1089/acm.2014.0177. PMID: 25405876; PMCID: PMC4270108.
  8. LiverTox: Clinical and Research Information on Drug-Induced Liver Injury [Internet]. Bethesda (MD): National Institute of Diabetes and Digestive and Kidney Diseases; 2012-. Ashwagandha. 2019 May 2. PMID: 31643854.
  9. Choudhary D, Bhattacharyya S, Bose S. Efficacy and Safety of Ashwagandha (Withania somnifera (L.) Dunal) Root Extract in Improving Memory and Cognitive Functions. J Diet Suppl. 2017 Nov 2;14(6):599-612. doi: 10.1080/19390211.2017.1284970. epub 2017 Feb 21. PMID: 28471731.
  10. Salve J, Pate S, Debnath K, Langade D. Adaptogenic and anxiolytic effects of Ashwagandha Root Extract in Healthy Adults: A Double-blind, Randomized, Placebo-controlled Clinical Study. Cureus. 2019 Dec 25;11(12):e6466. doi: 10.7759/cureus.6466. PMID: 32021735; PMCID: PMC6979308.
  11. Lemoine, P., Nir, T., Laudon, M., & Zisapel, N. (2007). Prolonged-release improves sleep quality and morning alertness in insomnia patients aged 55 years and older and has no withdrawal effects. Journal of sleep research, 16(4), 372-380.
  12. Dollins, A. B., Zhdanova, I. V., Wurtman, R. J., Lynch, H. J., & Deng, M. H. (1994). Effect of inducing nocturnal serum concentrations in daytime on sleep, mood, body temperature, and performance. Proceedings of the National Academy of Sciences, 91(5), 1824-1828.
  13. Reiter, R. J., Tan, D. X., Manchester, L. C., Qi, W., & Garcia, J. J. (2001). Reduces oxidant damage and promotes mitochondrial respiration: implications for aging. Annals of the New York Academy of Sciences, 939(1), 158-167.
  14. Zhang Y, Chen C, Lu L, Knutson KL, Carnethon MR, Fly AD, Luo J, Haas DM, Shikany JM, Kahe K. Association of magnesium intake with sleep duration and sleep quality: findings from the CARDIA study. Sleep. 2022 Apr 11;45(4):zsab276. doi: 10.1093/sleep/zsab276. PMID: 34883514; PMCID: PMC8996025.
  15. Arab, A., Rafie, N., Amani, R. et al. The Role of Magnesium in Sleep Health: a Systematic Review of Available Literature. Biol Trace Elem Res 201, 121-128 (2023). https://doi.org/10.1007/s12011-022-03162-1
  16. Kogan S, Sood A, Garnick MS. Zinc and wound healing: a review of zinc physiology and clinical applications. Wounds. 2017 Apr;29(4):102-106. PMID: 28448263.
  17. Shankar AH, Prasad AS. Zinc and immune function: the biological basis of altered resistance to infection. Am J Clin Nutr. 1998 Aug;68(2 Suppl):447S-463S. doi: 10.1093/ajcn/68.2.447S. PMID:9701160.
  18. Field DT, Cracknell RO, Eastwood JR, Scarfe P, Williams CM, Zheng Y, Tavassoli T. High-dose vitamin B6 supplementation reduces anxiety and strengthens visual surround suppression. Hum Psychopharmacol. 2022 Nov;37(6):e2852. doi: 10.1002/hup.2852. epub 2022 Jul 19. PMID: 35851507; PMCID: PMC9787829.

Content: 300g Item No.: 6417C

Sleep is incredibly important for the human body, only those who are rested, can in the long term also efficient stay and perform at their best. Sleep is needed so that the body and the brain can ideally recover and regenerate can. This is especially true for athletes, as the stresses placed on the body and nervous system by physical activity can be enormous. Not all sleep, however, provides the same level of recovery that Sleep quality plays a decisive role here. How deeply and quietly one sleeps contributes significantly to the Regeneration and determines how refreshed the body is the next morning. In view of this has GN the new Sleeper developed a supplement that relies on various ingredients, all of which have been shown in studies to be positively affects the sleep and recovery of the test subjects could act. The new Sleeper consists of two different active ingredient complexesOne is specifically aimed at improving sleep, the other provides a supply of various nutrients, which also have a calming effect exhibit. We will now go into more detail about all these active ingredients.

For this purpose, we will start with the "Sleeper Matrix", an active ingredient complex that contains a whole range of different active ingredients that have been associated with an improvement in sleep quality in test subjects from various studies. The first ingredient we would like to discuss in more detail is gamma-aminobutyric acid, better known as GABA. This ingredient has been popular in connection with sleep for some time and has been the subject of numerous studies. One of these studies showed, for example, that various parameters of sleep quality could be improved by GABA (1), while subjects in another study reported falling asleep faster after taking GABA (2). The next ingredient we want to take a closer look at is L-tryptophan, and again, this is an active ingredient that has been gaining popularity over the last few years. In 2022, a meta-analysis was published on L-tryptophan that looked at how the ingredient can affect sleep quality. The analysis considered 18 different articles and concluded that tryptophan supplementation may help improve switching quality similar to taking GABA (3). Glycine is another ingredient that GN Laboratories used in the new Sleeper. Glycine is an amino acid that acts as a neurotransmitter in the body and thus can affect the nervous system. In a study in which test subjects were asked to evaluate the quality of their sleep as well as its effectiveness after taking glycine, the active ingredient showed a significant improvement in both parameters for the test group. Glycine thus helped the test subjects to sleep better and more restfully (4). Valerian and ashwagandha are also important ingredients in the new Sleeper. Both ingredients are plant-based active ingredients whose potential for calming should be familiar to everyone. Valerian has also been associated with sleep-inducing effects in studies and, according to its own testimony, helped subjects fall asleep more easily (5,6). Ashwagandha is an active ingredient that is taking the supplement world by storm right now. When you look at the many benefits that taking it could bring to test subjects, it quickly becomes clear why this is so. A large number of scientific studies have confirmed the stress-regulating effect of ashwagandha (7,8,9) and the evidence regarding improved sleep quality continues to grow (10). 

The second active ingredient matrix is the "Zinc-MA Matrix" as the name suggests, this is sometimes magnesium and zinc enriched with vitamin B6. All three of these active ingredients contribute in different ways to the maintenance of countless bodily functions and also have an effect on sleep. Magnesium, according to researchers, is a major contributor to recovery during sleep and improves sleep quality (14,15). Zinc also plays an important role in regeneration and recovery and is essential for over 300 vital enzymes (16,17). Vitamin B6 also contributes to recovery. For example, a 2022 study showed that vitamin B6 can complement the inhibitory effects of GABA and is involved in the body's own production of GABA (18).

By combining these two complexes of active ingredients, GN 's new Sleeper is a product whose ingredients have been shown to affect sleep in a variety of ways in test subjects. All ingredients were selected with the goal of bringing your recovery to the next level and thus promote optimal regeneration. As usual, GN relies exclusively on ingredients of the highest quality, so that the effect can unfold optimally and nothing stands in the way of an optimal performance. The new Sleeper from GN Laboratories - Because in the end only results count

Customer Reviews

Based on 25 reviews
Oskar Willer
Sleep Supplement

Combination sleep supplement that really convinces, I really like to drink it before going to bed

Helmut Karsten
Very strong effect

The effect is really strong, you really shouldn't consume more than the specified dose hahaha... Maybe less is enough

Vin Cenzo
Great effect

The effect is really great and really helps you sleep, but not in extreme situations.

luca herrmann
A real game changer

has revolutionized my sleep patterns. As someone who often suffered from sleep problems, this product has helped me sleep deeper and more restfully. The effects on my mood and energy during the day are also impressive, just ask those around me."

Rupert F.
Sleep like a baby

A real game changer - I've been sleeping like a baby since I started using the Sleeper