Primeval Labs EAA Sleep is the evolution of sleep aid supplements.

Deep, restful sleep is crucial to optimal mental and physical performance. Unfortunately, most people simply don’t get enough quality sleep every night, leading to lethargy, brain fog, irritability, and countless other side effects. Even worse, especially for athletes, skimping on sleep can reduce recovery, decrease muscle growth, and encourage fat gain!*

Simply put, you need quality sleep every night. Whether it be 4, 8, or even 10 hours, the sleep you get each night should be deep and restorative, so that when you wake up the next morning you feel refreshed and ready to tackle whatever challenges the new day will throw you.*

EAA Sleep is an all-natural sleep and recovery supplement to recharge your body and mind and support your muscle building efforts. EAA Sleep provides a full complement of all natural sleep aids to encourage relaxation and sedation, promoting deep, restorative sleep without any groggy feelings the next morning.

On top of that, you’ll also get the full spectrum of essential amino acids (EAAs) to support muscle growth and repair while you sleep, thereby avoiding muscle breakdown (catabolism).*

Plus, EAA Sleep also tastes great! You’ll actually look forward to drinking it each night before slipping under the covers.*

EAA Sleep Ingredients

GABA (1g)

GABA, short for Gamma-Aminobutyric Acid, is a naturally occurring neurotransmitter that regulates depressive and sedative actions in the brain. It’s essential for relaxation and has been associated with stable mood and restful sleep. That’s not all though, as GABA also supports production of key hormones in the body that control muscle growth and fat burning, including human growth hormone.*[1]

Supplemental GABA increases alpha band brain waves[25] while decreasing beta brain waves. Alpha waves are the “deep relaxation” waves in the brain, while beta waves are responsible for alertness and reasoning.*

  • GABA is calming neurotransmitter associated with restful sleep*
  • Studies show that supplementing with GABA increases alpha brain waves*

L-Theanine (200mg)

Found prevalently in tea leaves, L-Theanine is an amino acid that promotes relaxation, reduces stress, and improves sleep.[4,5,6] Theanine’s ability to induce a state of calmness is one of the primary reasons it’s a staple ingredient in sleep aids and why so many people recommend drinking a cup of warm herbal tea before bed.*

If you’re one of those individuals who has trouble turning your mind off at night, theanine may help calm your mind and alleviate your stress, enabling you to drift off to a long, peaceful sleep.*

  • Amino acid found in green tea that crosses the blood-brain barrier*
  • Increases levels of GABA in the brain*
  • Studies show supplementing with L-Theanine promotes relaxation and helps reduce stress*


5-HTP (100mg)

Derived from the essential amino acid tryptophan, 5-HTP (5-hydroxytryptophan) is a precursor to serotonin, the neurotransmitter associated with happiness and contentment. This compound promotes relaxation and sleep, and also has been shown to reduce appetite.*[7]

When combined with GABA, the two were documented to decrease the time required to fall asleep as well as improve sleep quality and time asleep.[8] Additionally, since 5-HTP supports serotonin production, it may also improve mood and sense of well-being.*

  • Direct precursor to serotonin*
  • Promotes relaxation*
  • Supports a healthy mood*
  • When combined with GABA, 5-HTP may help reduce sleep latency and improve quality of sleep*

Melatonin (2.5mg)

Melatonin is a naturally-occurring hormone secreted by the brain that governs sleep. Essentially, this neurohormone controls your circadian rhythms and tells your body when it’s time to get in “sleep mode.”*

Unfortunately, light suppresses melatonin production, and in this day and age of constant TV, laptop, and smartphone use, the circadian rhythm gets out of whack due to disrupted melatonin production and the end result is disrupted sleep.*

Supplementing with melatonin can promote a healthy circadian rhythm, thereby helping you get to sleep faster each night.[9,10,11] It’s also been useful in combating insomnia and improving sleep quality in individuals as well.[12,13] Best of all, melatonin doesn’t come with any rebound effects or withdrawal symptoms, unlike other common sleep aids such as phenibut.*

  • Melatonin is a hormone that regulates the sleep-wake cycle*
  • Supplementing with melatonin may improve sleep latency*

2:1:1 BCAAs (5g)

The branch-chain amino acids (BCAAs) are a special “subcategory” of the essential amino acids. Comprised of the amino acids Leucine, Isoleucine, and Valine, the three BCAAs have been heavily investigated for their role in promoting muscle protein synthesis (via mTOR activation), reducing muscle breakdown (catabolism), and improving exercise performance.[14,15,16] Additionally, the BCAAs support immune system function, glycogen replenishment, and energy production.*[17,18]

  • Stimulate muscle protein synthesis*
  • Help reduce muscle breakdown*
  • Support glycogen replenishment and energy production*


Essential Amino Acids

L-Lysine HCl (300mg)

Lysine is one of the EAA’s essential for protein construction, injury recovery, and carnitine production. Carnitine is a substance that facilitates the transport of fatty acids into the mitochondria of your cells to be burned for energy, i.e. fat burning. But that’s not all, lysine is also required for the production of skin, cartilage, collagen, and tendons, as well as calcium absorption.*[19]

  • Supports immune function*
  • Assists fat burning via its role in supporting carnitine production*

L-Threonine (225mg)

Discovered by William C. Rose, threonine was the final amino acid discovered by science.[20] It’s required for the synthesis of glycine and serine, two amino acids which drive muscle protein synthesis in the body. Threonine also works with aspartic acid and methionine to support digestion of fats in the liver, otherwise known as lipotropic function.*

  • Supports muscle protein synthesis*
  • Aids fat digestion in the liver*
L-Phenylalanine (200mg)

Phenylalanine is an EAA critical to proper Central Nervous System (CNS) function. It can easily cross the blood-brain barrier where it’s then used in the production of dopamine, epinephrine (adrenaline), and norepinephrine (noradrenaline)[20], three big-time neurotransmitters that regulate how you interact and view your environment.*

  • Supports production of dopamine, adrenaline, and noradrenaline*
  • Promotes focus and motivation*

L-Tryptophan (50mg)

L-tryptophan is the lone precursor to serotonin and essential to maintaining optimal levels of the neurotransmitter in the body, and subsequently mood, behavior, and cognition.[21] In fact, L-Tryptophan has even been used as a form of alternative medicine to treat insomnia, anxiety, depression, and even attention-deficit disorder (ADD).*

Unfortunately, Tryptophan is the amino acid with the lowest concentration in the body[22], which is why so many are at risk for disrupted sleep and altered behavior.*

  • Tryptophan is the least abundant amino acid in the body*
  • Precursor to serotonin, a neurotransmitter involved in mood as well as sleep.*

L-Histidine (25mg)

A precursor to histamine, histidine is an EAA that’s essential for cognitive function and wakefulness.[23] Histidine is required for the maintenance and development of the myelin sheaths around nerve cells that support signal transmission from the brain to all the other areas of the body. Plus, this EAA also protects against the damaging effects of radiation and assists in the elimination of heavy metals from the body.*

  • Supports production of the intracellular buffer carnosine*
  • Histamine precursor that aids cognitive function and myelin sheath development*

L-Methionine (20mg)

Methionine is involved in numerous functions of the body, with one of the most important being, fat digestion. Additionally, methionine serves as a precursor for L-Cysteine, a powerful antioxidant, which protects against oxidative stress brought on by free radicals caused by intense exercise.*[24]

  • Supports L-cysteine synthesis (cysteine is an important antioxidant in the body)*
  • Assists with fat digestion*

Suggested Use:

Take 1 Scoop with 12-14 oz of cold water 20-30 min before bedtime.


*These statements have not been evaluated by the Food and Drug Administration.  This product is not intended to diagnose, treat, cure, or prevent any disease.


    1. Powers M. GABA supplementation and growth hormone response. Med Sport Sci. 2012;59:36-46. doi:10.1159/000341944. https://www.ncbi.nlm.nih.gov/pubmed/23075553
    2. Abdou AM, Higashiguchi S, Horie K, Kim M, Hatta H, Yokogoshi H. Relaxation and immunity enhancement effects of gamma-aminobutyric acid (GABA) administration in humans. Biofactors. 2006;26(3):201-208. https://www.ncbi.nlm.nih.gov/pubmed/16971751
    3. Yoto A, Murao S, Motoki M, et al. Oral intake of gamma-aminobutyric acid affects mood and activities of central nervous system during stressed condition induced by mental tasks. Amino Acids. 2012;43(3):1331-1337. doi:10.1007/s00726-011-1206-6. https://www.ncbi.nlm.nih.gov/pubmed/22203366
    4. Lyon MR, Kapoor MP, Juneja LR. The effects of L-theanine (Suntheanine(R)) on objective sleep quality in boys with attention deficit hyperactivity disorder (ADHD): a randomized, double-blind, placebo-controlled clinical trial. Altern Med Rev. 2011;16(4):348-354. https://www.ncbi.nlm.nih.gov/pubmed/22214254
    5. Nobre AC, Rao A, Owen GN. L-theanine, a natural constituent in tea, and its effect on mental state. Asia Pac J Clin Nutr. 2008;17 Suppl 1:167-168. https://www.ncbi.nlm.nih.gov/pubmed/18296328
    6. Kimura K, Ozeki M, Juneja LR, Ohira H. L-Theanine reduces psychological and physiological stress responses. Biol Psychol. 2007;74(1):39-45. doi:10.1016/j.biopsycho.2006.06.006. https://www.ncbi.nlm.nih.gov/pubmed/18296328
    7. Ceci F, Cangiano C, Cairella M, et al. The effects of oral 5-hydroxytryptophan administration on feeding behavior in obese adult female subjects. J Neural Transm. 1989;76(2):109-117. https://www.ncbi.nlm.nih.gov/pubmed/2468734
    8. Shell W, Bullias D, Charuvastra E, May LA, Silver DS. A randomized, placebo-controlled trial of an amino acid preparation on timing and quality of sleep. Am J Ther. 2010;17(2):133-139. doi:10.1097/MJT.0b013e31819e9eab. https://www.ncbi.nlm.nih.gov/pubmed/19417589
    9. Cramer H, Rudolph J, Consbruch U, Kendel K. On the effects of melatonin on sleep and behavior in man. Adv Biochem Psychopharmacol. 1974;11(0):187-191.
    10. Waldhauser F, Saletu B, Trinchard-Lugan I. Sleep laboratory investigations on hypnotic properties of melatonin. Psychopharmacology (Berl). 1990;100(2):222-226. https://www.ncbi.nlm.nih.gov/pubmed/2305009
    11. Nave R, Peled R, Lavie P. Melatonin improves evening napping. Eur J Pharmacol. 1995;275(2):213-216. https://www.ncbi.nlm.nih.gov/pubmed/7796857
    12. Lemoine P, Nir T, Laudon M, Zisapel N. Prolonged-release melatonin improves sleep quality and morning alertness in insomnia patients aged 55 years and older and has no withdrawal effects. J Sleep Res. 2007;16(4):372-380. doi:10.1111/j.1365-2869.2007.00613.x. https://www.ncbi.nlm.nih.gov/pubmed/18036082
    13. Luthringer R, Muzet M, Zisapel N, Staner L. The effect of prolonged-release melatonin on sleep measures and psychomotor performance in elderly patients with insomnia. Int Clin Psychopharmacol. 2009;24(5):239-249. doi:10.1097/YIC.0b013e32832e9b08. https://www.ncbi.nlm.nih.gov/pubmed/19584739
    14. Lynch CJ. Role of leucine in the regulation of mTOR by amino acids: revelations from structure-activity studies. J Nutr. 2001;131(3):861S-865S. http://jn.nutrition.org/content/131/3/861S.long
    15. Gualano AB, Bozza T, Lopes De Campos P, et al. Branched-chain amino acids supplementation enhances exercise capacity and lipid oxidation during endurance exercise after muscle glycogen depletion. J Sports Med Phys Fitness. 2011;51(1):82-88. https://www.ncbi.nlm.nih.gov/pubmed/21297567
    16. Freund H, Hoover HC, Atamian S, Fischer JE. Infusion of the Branched Chain Amino Acids in Postoperative Patients: Anticatabolic Properties. Annals of Surgery. 1979;190(1):18-23. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1344449/
    17. Cruzat VF, Krause M, Newsholme P. Amino acid supplementation and impact on immune function in the context of exercise. Journal of the International Society of Sports Nutrition. 2014;11:61. doi:10.1186/s12970-014-0061-8. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4272512/
    18. Doi M, et al. Isoleucine, a potent plasma glucose-lowering amino acid, stimulates glucose uptake in C2C12 myotubes . Biochem Biophys Res Commun. (2003) http://www.ncbi.nlm.nih.gov/pubmed/14651987
    19. Dort J, Leblanc N, Maltais-Giguère J, Liaset B, Côté CH, Jacques H. Beneficial Effects of Cod Protein on Inflammatory Cell Accumulation in Rat Skeletal Muscle after Injury Are Driven by Its High Levels of Arginine, Glycine, Taurine and Lysine. Blachier F, ed. PLoS ONE. 2013;8(10):e77274. doi:10.1371/journal.pone.0077274. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3790733/
    20. UDENFRIEND S, COOPER JR. The enzymatic conversion of phenylalanine to tyrosine. J Biol Chem. 1952;194(2):503-511. http://www.jbc.org/content/194/2/503.long
    21. Richard DM, Dawes MA, Mathias CW, Acheson A, Hill-Kapturczak N, Dougherty DM. L-Tryptophan: Basic Metabolic Functions, Behavioral Research and Therapeutic Indications. International Journal of Tryptophan Research : IJTR. 2009;2:45-60. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2908021/
    22. Young LS, Stoll S. Proteins and amino acids. In: Matarese LE, Gottschlich MM, editors. Contemporary Nutrition Support Practice. 2nd ed. Vol. 1. New York: Saunders; 2003. pp. 94–104.
    23. Van Ruitenbeek P, Sambeth A, Vermeeren A, Young S, Riedel W. Effects of L-histidine depletion and L-tyrosine/L-phenylalanine depletion on sensory and motor processes in healthy volunteers. British Journal of Pharmacology. 2009;157(1):92-103. doi:10.1111/j.1476-5381.2009.00203.x. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2697785/
    24. Brosnan JT, Brosnan ME. The Sulfur-Containing Amino Acids: An Overview. J Nutr. 2006;136(6):1636S-1640. http://jn.nutrition.org/content/136/6/1722S.full
    25. Boonstra E, de Kleijn R, Colzato LS, Alkemade A, Forstmann BU, Nieuwenhuis S. Neurotransmitters as food supplements: the effects of GABA on brain and behavior. Front Psychol. 2015;6:1520. Published 2015 Oct 6. doi:10.3389/fpsyg.2015.01520
    †These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.