Single Amino Acids

Understanding Single Amino Acids: A Comprehensive Guide

Amino Acids are molecules that combine to form proteins. They are the building blocks of life. Roughly 500 amino acids have been identified in nature, but just 20 of them make up the proteins found in the human body. Eleven of these are made inside the body, while the remaining 9 must be supplied by food and, as needed, through supplementation.  Read more >

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  1. GABA 600mg - 60 V-Caps

    Developed by Naturopathic Labs, to help the body relax naturally, GABA is a non-essential amino acid. GABA is a brain chemical that blocks the activity of stimulating neurochemicals in order to relax and calm the nerves, promoting overall relaxation. GABA supports symptoms of stress and anxiety and Naturopathic Labs' formulation is 20% stronger than leading competitor brands, ensuring an optima...

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  2. Glutathione Extra - 60 V-Caps

    Formulated by Naturopathic Labs, Glutathione Extra features key ingredients to promote detoxification and maintain overall good health. Providing antioxidants Glutathione Extra is often used to help support those who are concerned with heavy metal toxicity, liver disorders, and free radical damage. Glutathione Extra is 100% vegetarian, gluten free, GMO free and non-irradiated. [VCAPS]

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  3. L-Theanine 250mg - 60 V-Caps + BONUS

    Formulated by Naturopathic Labs to naturally support relaxation, L-Theanine is an amino acid that has a strong affinity for the brain and central nervous system. L-Theanine is a precursor for neurotransmitters, GABA and Dopamine, and in general supports relaxation, mood, memory, sleep and cognitive ability. Naturopathic Labs L-Theanine comes in an easy to swallow vegetarian capsule of therapeut...

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  4. L-Arginine 600mg - 60 V-Caps

    Developed by Naturopathic Labs, L-Arginine 600mg is formulated to support athletic performance as well as muscle repair and tissue formation. Naturopathic Labs L-Arginine if formulated with the bio active "L" form of Arginine, making it readily available and better absorbed by the body. Arginine is a non-essential amino acid that can help exercise capacity and immune function. Naturopathic Labs...

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  5. L-Glutamine 1,000mg - 60 V-Caps

    NATURAL FACTORS L-GLUTAMINE. 1000MG L-GLUTAMINE derived from a natural process of fermentation. Natural Factors' L-glutamine provides a full 1000mg of this very important amino acid. In a highly digestible capsule form, NF's glutamine is ideal for those using glutamine in a variety of therapeutic applications including digestive health. [CAPSULE]

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  6. Glutathione (Reduced) 500mg - 60 V-Caps

    Arcwell Glutathione provides 500mg of glutathione in its "reduced" form, which is the active version for better absorption. L-Glutathione (GSH) is a small protein made of three amino acids: glutamate, cysteine, and glycine. It acts as an antioxidant and is found in many living beings. Various factors like poor diet, environmental pollutants, stress, and aging can lower GSH levels in the body. G...

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  7. 5-HTP 100 - 60 V-Caps

    Sleeping well and feeling good are two of life’s necessities that keep us healthy and happy. CanPrev 5-HTP 100 is here to help by providing 100mg of 5-Hydroxy-L-tryptophan per capsule plus Magnesium and Vitamin B6. 5-hydroxytryptophan (5-HTP) is a compound made in the body from the amino acid, tryptophan, that you get from eating protein-rich foods. Once in the 5-HTP state, it goes on to form s...

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  8. Melatonin 3mg Sustained-Release - 60 V-Caps

    Sometimes, our body’s circadian rhythm is thrown off by factors like overnight work shifts, traveling in different time zones, stress, too much screen time before bed, or irregular sleep schedules. Supplementing with CanPrev’s Melatonin 3mg Sustained-Release can help to improve sleep time and restfulness, accelerate recovery from jet lag, and improve sleep for those working overnight shifts or ...

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  9. GABA 700 - 60 V-Caps

    GABA 700 by Genestra supports brain and cognitive health by promoting feelings of relaxation and calmness during times of stress. This formula is dairy and gluten-free and suitable for vegans. Made into a convenient vegetable capsule formula, GABA 700 offers 700mg of GABA per daily dose. Genestra is committed to quality by testing their supplements three times to meet Canadian, European an...

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  10. L-Tryptophan 220mg + 50mg B-6 - 60 V-Caps

    L-TRYPTOPHAN FROM LIFE CHOICE Tryptophan is an essential amino acid, used by the brain to produce serotonin, a necessary neurotransmitter which transfers nerve impulses from cell to cell, and is responsible for normal sleep. Use Life Choice L-Tryptophan to alleviates stress, benefit the heart, assist in weight control as an appetite suppressant, and enhance the release of growth hormone. L-Try...

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  11. Glutathione Extra Strength 500mg - 60 V-Caps

    This Extra Strength Glutathione from NOW contains 500mg of L-Glutathione plus is enhanced with Milk Thistle Extract and Alpha Lipoic Acid. Glutathione is a tripeptide amino acid produced in the liver primarily from cysteine. It acts as a cellular antioxidant by inhibiting free radical formation. Glutathione has been called the master antioxidant, because it recycles the antioxidants vitamins C ...

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  12. L-Theanine Double Strength 200mg - 60 V-Caps

    Helping to to temporarily promote relaxation, NOW® has formulated their L-Theanine Double Strength 200mg  with the addition of Inositol. L-Theanine is an amino acid naturally found in green tea. L-Theanine promotes relaxation without the drowsiness or negative side effects associated with other calming agents. L-Theanine also supports healthy cardiovascular function through this relaxing effect...

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  13. L-Tryptophan 220mg - 60 V-Caps

    L-Tryptophan 220mg from NOW® offers you a source of an essential amino acid for the maintenance of good health. L-Tryptophan is a large neutral amino acid essential to human metabolism because it is the metabolic precursor of serotonin (a neurotransmitter), melatonin (a neurohormone), and niacin (vitamin B3) which assist in the regulation of sleep, positive mood and immune function. L-Tryptopha...

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  14. 5-HTP 100mg - 60 V-Caps

    Nutridom 5-HTP 100mg provides advanced support for mood balance, stress management, and restful sleep. Each vegan capsule delivers 100 mg of naturally sourced 5-Hydroxy-L-tryptophan (5-HTP), a compound that helps increase serotonin production—a key neurotransmitter for regulating mood, sleep, and appetite. By supporting healthy serotonin and melatonin levels, Nutridom 5-HTP promotes relaxation,...

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  15. L-Glutathione 500 Extra Strength - 60 V-Caps

    Nutridom Glutathione provides 500 mg of pure L-Glutathione per capsule, delivering over 99% purity in a clean, vegan-friendly formula. As a key antioxidant, glutathione supports the body’s natural defense against oxidative stress, helping maintain cellular balance and overall wellness. Each capsule is non-GMO, gluten-free, soy-free, and dairy-free, containing only the essential ingredient witho...

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  16. 5-HTP-100mg - 60 V-Caps

    Orange Naturals 5-HTP 100 mg is a plant-based supplement designed to support mood balance and restful sleep. Derived from griffonia simplicifolia, 5-HTP helps the body produce serotonin and melatonin, which play key roles in emotional well-being and sleep cycles. This formula is enhanced with vitamin B6 and magnesium to support absorption and utilization. Easy-to-take vegetable capsules provide...

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  17. L-Theanine With Magnesium 250mg - 60 V-Caps

    Orange Naturals L-Theanine with Magnesium 250 mg is a calming formula designed to support relaxation, focus, and overall balance. Featuring L-theanine, an amino acid naturally found in green tea, it helps promote a calm, alert state without causing drowsiness. Paired with magnesium, a key mineral involved in many body processes, this blend also supports muscle relaxation and nervous system func...

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  18. L-Theanine - 60 V-Caps

    Xymogen L-Theanine offers a natural way to support relaxation and mental clarity. Derived from green tea, this amino acid promotes a calm, focused state without causing drowsiness, making it suitable for daily use. It helps support cognitive alertness, mood balance, and overall neurological wellness while also contributing to healthy liver function and detoxification. Each two-capsule dose prov...

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  19. NAC - 60 V-Caps

    Xymogen’s NAC (N-acetyl-cysteine) provides a stable, sulfur-containing form of L-cysteine that supports the body’s natural antioxidant and detoxification processes. NAC helps replenish glutathione, one of the body’s key protective compounds, and contributes to the neutralization of everyday oxidative stress. It also plays a role in maintaining normal mucous consistency and overall respiratory w...

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  20. L-Theanine + Caffeine - 60 V-Caps

    Support your focus with Organika L-Theanine + Caffeine, a balanced formula designed for steady, sustained energy. Combining plant-based caffeine from yerba mate with L-theanine, it helps promote alertness while supporting a calm, focused state. This pairing offers a smoother energy experience without the sharp peaks often associated with caffeine alone. Ideal for work, study, or busy days, thes...

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Essential Single Amino Acids: A Detailed Chart

Amino acids are molecules that combine to form proteins. They are the building blocks of life. Roughly 500 Amino acids have been identified in nature, but just 20 of them make up the proteins found in the human body. Eleven of these are made inside the body, while the remaining 9 must be supplied by food and, as needed, through supplementation. Let's explore the chart of necessary amino acids for good health.

A chart of essential amino acids include: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine, all of which are naturally abundant in foods such as beef, poultry, fish, eggs, dairy, soy, quinoa, and buckwheat. Other foods such as nuts, seeds, beans, and certain grains contain some but not all the essential amino acids. Thus, they are “incomplete proteins" and should be combined to supply all 9 essential amino acids.

When your diet is lacking, or if you're looking to stimulate physical performance, boost energy, stimulate muscle protein synthesis, support immunity, enhance digestion, and promote overall excellent health, nothing beats a good amino acid supplement. Besides forming proteins, amino acids are needed to produce enzymes, hormones, and neurotransmitters. They are also involved in numerous metabolic pathways within cells throughout the body. 

Key Benefits of Single Amino Acids for Wellness

  • Boost Muscle Building & Prevent Muscle Breakdown
  • Enhance Physical Performance
  • Help Balance Glycemia
  • Promote Neurotransmitter and Hormone Synthesis
  • Stimulate Energy Production

Determining the Need: Who Benefits from Single Amino Acids?

Amino acids may be recommended as a complex, which has the advantage of not throwing off your amino acid balance. Still, individual amino acids may also be recommended depending on a person's health status and goals and may be ideal for specific health challenges. Here's a chart of amino acids and which health concerns they support:

  • Tryptophan may be recommended to help regulate the sleep-wake cycle, appetite, sleep, mood, and pain.

  • Carnitine may be used to aid weight loss, improve exercise performance, and enhance a sense of well-being

There is a wide range of single amino acid supplements available on the market, each offering its own unique health benefits. For guidance on which amino acid(s) may be advantageous for you, speak to the knowledgeable staff at your favourite health food store or online retailer.

Varieties of Single Amino Acids: Potency & Formats Explored

Single amino acid supplements are widely available in capsules and powders and in fun gummy form for those suffering from pill fatigue. Amino acids are also frequently added to protein powders to enhance performance, boost muscle building, and speed post-exercise recovery. Each amino acid is offered in its own optimal dosing range. Always refer to the label instructions on your product to determine which dose is best for you. 

Insights & Considerations: Making the Most of Single Amino Acids

Most amino acid supplements, whether in combination or isolated form, are well tolerated and cause few side effects. However, if your dose is too high, you may experience certain side effects such as:

  • Gastrointestinal distress, including bloating
  • Abdominal pain
  • Changes in eating patterns
  • Diarrhea
  • Drop in blood pressure

Amino acid supplements should ideally be taken on an empty stomach between meals to get the most bang for your buck. However, when it comes to sports nutrition, athletes and strength trainers can take their amino acid supplement either before, during, after training, or any other time throughout the day when a meal or a shake isn’t possible or preferred.

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