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. 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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  2. L-Lysine 500mg - 90 V-Caps

    500MG LYSINE IN THE ACTIVE "L" FORM. Derived from natural sources, Natural Factors' lysine amino acid supplement provides nutritional support for depressed immune systems. Known for its antiviral properties, lysine is often used to fight cold sores and other viral infections. Your body is unable to manufacture this essential amino acid on its own so it must be ingested from either foods or sup...

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  3. L-Lysine 500mg - 180 V-Caps

    500MG LYSINE IN THE ACTIVE "L" FORM. Derived from natural sources, Natural Factors' lysine amino acid supplement provides nutritional support for depressed immune systems. Known for its antiviral properties, lysine is often used to fight cold sores and other viral infections. Your body is unable to manufacture this essential amino acid on its own so it must be ingested from either foods or su...

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  4. L-Lysine 1,000mg - 60 Tabs

    1000MG LYSINE IN THE ACTIVE "L" FORM. Derived from natural sources, Natural Factors' lysine amino acid supplement provides nutritional support for depressed immune systems. Known for its antiviral properties, lysine is often used to fight cold sores and other viral infections. Your body is unable to manufacture this essential amino acid on its own so it must be ingested from either foods or s...

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  5. L-Lysine 1,000mg - 120 Tabs

    1000MG LYSINE IN THE ACTIVE "L" FORM. Derived from natural sources, Natural Factors' lysine amino acid supplement provides nutritional support for depressed immune systems. Known for its antiviral properties, lysine is often used to fight cold sores and other viral infections. Your body is unable to manufacture this essential amino acid on its own so it must be ingested from either foods or s...

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  6. Stress-Relax Mental Calmness 125mg - 60 V-Caps

    L-THEANINE FROM NATURAL FACTORS - NATURAL MOOD SUPPORT Active and natural source L-theanine derived from green tea. This unique amino acid is an ideal stress support supplement for people seeking a safe and effective alternative to drug medications with side effects. Theanine is unique because unlike other substances used to help regulate stress, it will not make you drowsy or reduce your ale...

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  7. L-Theanine 250mg - 90 V-Caps

    There’s a reason why drinking a cup of tea is so relaxing. True tea (made from the Camella sinensis plant) contains L-theanine, an amino acid that promotes mental calmness. A purified form of L-theanine supported by more than 50 studies demonstrating its safety and efficacy. It safely relaxes but won’t cause drowsiness. Just 1 capsule of Natural Factor's Stress-Relax Mental Calmness provides 25...

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  8. L-Taurine 1000mg - 120 V-Caps

    Natural Factors L-Taurine provides a source of this conditionally essential amino acid to support cardiovascular function. L-taurine has important roles in the heart, brain, and nervous system. Supplementation assists with the body’s fat metabolism and regulates ion levels across membranes. As a free-form amino acid, L-taurine is more effective than the form obtained directly from food. This no...

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  9. L-Taurine Powder - 450g

    Natural Factors L-Taurine provides a source of this conditionally essential amino acid to support cardiovascular function. L-taurine has important roles in the heart, brain, and nervous system. Supplementation assists with the body’s fat metabolism and regulates ion levels across membranes. As a free-form amino acid, L-taurine is more effective than the form obtained directly from food. This no...

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  10. L-Tryptophan 220mg - 90 V-Caps

    You may know tryptophan as the thing that makes you sleepy after a big turkey dinner, but did you know this essential amino acid can actually be used as a workout supplement? If you’re looking to build lean muscle mass, adding Natural Factors L-Tryptophan to your workout regimen and healthy diet may help you achieve those gym goals! Providing an essential amino acid needed for muscle protein sy...

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  11. L-Tyrosine 500mg - 60 V-Caps

    500 MG L-TYROSINE FROM NATURAL FACTORS. Often recommended by Natural Health Practitioners for mild depression and fatigue, L-Tyrosine is an important amino acid with effective stress managing benefits. Providing 500 mg per capsule Natural Factors L-Tyrosine is available in an easy to swallow vegetable capsule. Working as a precursor for the production of several neurotransmitters including no...

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  12. L-Tyrosine 500mg - 120 V-Caps

    500 MG L-TYROSINE FROM NATURAL FACTORS. Often recommended by Natural Health Practitioners for mild depression and fatigue, L-Tyrosine is an important amino acid with effective stress managing benefits. Providing 500 mg per capsule Natural Factors L-Tyrosine is available in an easy to swallow vegetable capsule. Working as a precursor for the production of several neurotransmitters including no...

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  13. L-Tyrosine Powder - 250g

    Often recommended by Natural Health Practitioners for mild depression and fatigue, L-Tyrosine is an important free form amino acid with effective stress managing benefits. Providing 5g per serving, Natural Factors L-Tyrosine is available in unflavoured and vegan-friendly powder from. Working as a precursor for the production of several neurotransmitters including norepinephrine and epinephrine,...

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  14. Melatonin 1mg (Peppermint) - 90 Sublingual Tabs

    Many adults experience frequent or occasional sleep disturbance, including difficulty falling asleep, staying asleep, or waking too early. Taking Melatonin from Natural Factors 30-90 minutes before bedtime temporarily resets the biological clock, reduces the time it takes to fall asleep, improves sleep quality, increases total sleep time in people with an altered sleep schedule (e.g., shift wor...

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  15. Melatonin 3mg - 90 Sublingual Tabs

    NATURAL FACTORS 3MG MELATONIN. NF Melatonin in an active sublingual lozenge form. Natural Factors' fast acting lozenge form melatonin is ideal for people who have trouble getting to sleep. Absorbed quickly through the tongue, sublingual melatonin provides quick relief for insomnia without the hangover associated with conventional sleep medications. These non-addictive tablets are also easily ...

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  16. Melatonin 3mg - 210 Sublingual Tabs + BONUS

    NATURAL FACTORS 3MG MELATONIN. NF Melatonin in an active sublingual lozenge form. Natural Factors' fast acting lozenge form melatonin is ideal for people who have trouble getting to sleep. Absorbed quickly through the tongue, sublingual melatonin provides quick relief for insomnia without the hangover associated with conventional sleep medications. These non-addictive tablets are also easily s...

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  17. Melatonin 5mg (Peppermint) - 180 Sublingual Tabs

    MELATONIN WILL IMPROVE THE QUALITY OF YOUR SLEEP! Melatonin is a safe and effective alternative to ease the way into restful sleep. It is a natural hormone that can normalize sleep patterns when insomnia is caused by a disruption of the body's circadian rhythm. Supplemental melatonin and bright light therapy are considered a standard medical treatment for cases of jetlag, shift work, age-rela...

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  18. Melatonin 5mg (Peppermint) - 90 Sublingual Tabs

    MELATONIN WILL IMPROVE THE QUALITY OF YOUR SLEEP! Melatonin is a safe and effective alternative to ease the way into restful sleep. It is a natural hormone that can normalize sleep patterns when insomnia is caused by a disruption of the body's circadian rhythm. Supplemental melatonin and bright light therapy are considered a standard medical treatment for cases of jetlag, shift work, age-rela...

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  19. Melatonin 10mg (Peppermint) - 180 Sublingual Tabs

    GET YOUR SLEEP SCHEDULE BACK ON TRACK! Many adults experience frequent or occasional sleep disturbance, including difficulty falling asleep, staying asleep, or waking too early. Taking Melatonin from Natural Factors 30–90 minutes before bedtime temporarily resets the biological clock, reduces the time it takes to fall asleep, improves sleep quality, increases total sleep time in people ...

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  20. Melatonin 10mg - 90 Sublingual Tabs + BONUS

    GET YOUR SLEEP SCHEDULE BACK ON TRACK! Many adults experience frequent or occasional sleep disturbance, including difficulty falling asleep, staying asleep, or waking too early. Taking Melatonin from Natural Factors 30–90 minutes before bedtime temporarily resets the biological clock, reduces the time it takes to fall asleep, improves sleep quality, increases total sleep time in people w...

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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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