What are amino acids?

Amino acids are organic compounds that build proteins and support processes like muscle repair, hormone signaling, and neurotransmitter production.

What are essential amino acids?

Essential amino acids are those the body cannot make in sufficient amounts, so they must come from food or supplements.

Do amino acid supplements help with muscle recovery?

They can support muscle protein synthesis and reduce muscle breakdown, especially when total protein intake is low or training demands are high.

What is a typical amino acid supplement dose?

Common supplemental intakes are about 5–20 g per day, depending on the product type and individual needs.

Are amino acid supplements safe for everyone?

They are generally well tolerated when used as directed, but people with kidney or liver disease, pregnancy, or those on medications should consult a clinician first.

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Eicosapentaenoic acid (EPA)Vitamin D3 Docosahexaenoic acid (DHA)Zinc (Bisglycinate)

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Vitamin B

Vitamin B1 (Thiamine)

Vitamin B2 (Riboflavin)

Vitamin B3 (Niacin)

Vitamin B5 (Pantothenic Acid)

Vitamin B6 (Pyridoxine)

Vitamin B7 (Biotin)

Vitamin B9 (Folic Acid)

Vitamin B12 (Methylcobalamin)

Vitamin B12 (Cobalamin)

Vitamin A & Carotenoids

Vitamin C

Vitamin D

Vitamin E

Vitamin K

Vitaminoids

Trimethylglycine (Betaine)

NMN (Nicotinamide Mononucleotide)

Pyrroloquinoline Quinone (PQQ)

D-Chiro-Inositol

Coenzym Q10 (Ubiquinone)

Betaine HCL

Nicotinamide Riboside

Vitamin B8 (Myo-Inositol)

Choline

Citicoline (CDP-Choline)

Coenzyme Q10 (Ubiquinol)

Calcium

Calcium Alpha-Ketoglutarate

Magnesium

Magnesium Bisglycinate

Magnesium L-Threonate

Trace Minerals

Copper (Bisglycinate)

Chromium Picolinate

Manganese (Bisglycinate)

Zinc

Pentadecanoic Acid (C15:0)

Phosphatidylserine

R-Alpha Lipoic Acid

Black Cumin Oil

Extra Virgin Olive Oil

Ceratiq wheat oil extract

Phospholipids

Algae Oil

Fish Oil

Conjugated Linoleic Acid

Gamma-Aminobutyric Acid

Alpha-Linolenic Acid

Gamma-Linolenic Acid

Omega-3

Docosapentaenoic acid (DPA)

Eicosapentaenoic acid (EPA)

Docosahexaenoic acid (DHA)

AminoMar

Acetyl-L-Carnitine

PABA (para-aminobenzoic acid)

Essential Amino Acids

Conditionally Essential Amino Acids

L-Theanine

Non-Essential Amino Acids

Beta-Alanine

L-Cysteine Hydrochloride

Amino Acid Derivative

Taurine

Creatine (Hydrochloride)

L-Arginine Alpha-Ketoglutarate

Creatine (Monohydrate)

Akkermansia muciniphila

Lactobacillus Reuteri

Probiotics

Bifidobacterium longum BB536

Prebiotics

Stinging Nettle Extract

Pomegranate Polyphenols

Red Beet Extract

Pine Extract (Pycnogenol)

Oligomeric Proanthocyanidins (OPC)

Ashwagandha Root Extract

Methylsulfonylmethane (MSM)

Citrus Sinensis Extract

Horsetail Stem Extract

Flax Seed Extract

Sulforaphane Glucosinolate

Garlic Extract

Black Pepper

Apricot Kernel Extract

Lovage

Spiny Rest Harrow Root Extract

Juniper Berry Extract

Bearberry Leaf Extract

White Kidney Bean Extract

Lady’s Mantle Extract

Bitter Orange Extract

St. John’s Wort Extract

Japanese Knotweed Extract

Hydroxytyrosol/tyrosol

Olive extract

Sesame seed lignan extract

Broccoli Sprout Extract

Cranberry Extract

Flavon Glycosides

Gentian Root Extract

Griffonia simplicifolia Extract

Ajuga Turkestanica Extract

Amaranthus Leaf Extract

Banaba Extract

Boswellia Extract

Capsaicin

Cayenne Pepper Extract

Celery Extract

Ceylon Cinnamon Extract

Chamomile Extract

Charantin

Chinese Goldthread Root Extract

Citrus Aurantium Extract

Cocoa Extract

Cyanotis Arachnoidea Extract

Fadogia Agrestis Extract

Garcinia Cambogia Extract

Goldenrod Extract

Green Tea Extract

Guarana Extract

Horse Chestnut Extract

Grapefruit Seed Extract

Grape Vine Leaf Extract

Green Tea Polyphenols

Epigallocatechin Gallate (EGCG)

Adaptogens

Cordyceps sinensis extract

Ginsenoside

Lion's Mane (Hericium erinaceus)

Ginseng Extract

Cat's Claw (Uncaria tomentosa)

Arjuna (Terminalia arjuna)

Tribulus Terrestris Extract

Rhodiola rosea

Panax Ginseng Extract

Mushrooms

Reishi Extract

Astragalus Polysaccharides

Hyaluronic Acid

Glucosamine Sulfate

Chondroitin Sulfate

Glucosamine Sulphate 2KCL

Amino Acid

Moderate study situation·7/10

A higher score indicates better study conditions, but not necessarily effectiveness.

Amino acids are protein building blocks vital for muscle, immune, and neurotransmitter function, often used in supplements to support recovery, growth, and overall health.

Sleep Improvement Exercise Recovery Muscle Repair Essential Nutrient Exercise Performance Muscle Gain Immune Booster

dose range

5–20 g

Divided into 2–3 doses/day, commonly taken around workouts.

Consumption

Take with meals or carbohydrates to improve absorption; timing around workouts may benefit muscle recovery.

Not fat-soluble.

Best time

Pre- and post-workout use is common for athletes; others may split doses across meals.

Description

Amino acids are organic compounds forming proteins and supporting fundamental processes like muscle repair, hormone regulation, and immunity. Some are 'essential'—meaning they must be obtained from diet or supplements, especially in states of increased need or restricted diets. Supplemental amino acids are common in sports and clinical nutrition.

benefits

Main effects with level of evidence

Moderate

Note on evidence

Most evidence supports benefits in specific populations (athletes, critically ill, dietary deficiency), with variable impact for healthy individuals consuming adequate protein.

Muscle Growth and Repair

Moderate

Essential and branched-chain amino acids (BCAAs) support muscle protein synthesis, reduce muscle breakdown, and assist recovery after exercise.

Particularly relevant for: athletes · active individuals · elderly · people with increased protein needs

1 · NIH Office of Dietary Supplements – Amino Acids Fact Sheet 2 · Journal of the International Society of Sports Nutrition – Review on BCAA Supplementation

Improved Mood and Sleep

Limited

Amino acids such as tryptophan are precursors to neurotransmitters like serotonin, which help regulate mood and support healthy sleep patterns.

Particularly relevant for: people with low mood · those experiencing poor sleep

3 · NIH: Effects of Tryptophan on Mood and Sleep

Immune System Support

Moderate

Amino acids like glutamine play a key role in immune function and maintaining gut barrier integrity, especially under stress or illness.

Particularly relevant for: people under stress · critically ill · athletes

4 · British Journal of Nutrition – Glutamine and Immune Function

Safety & Information

Important safety information & known risks

For educational purposes only • not medical advice

Amino acid supplements are generally safe in healthy adults at recommended doses. Possible adverse effects are mostly seen with excessive doses or in those with preexisting conditions.

warning notices

High doses may cause gastrointestinal upset including nausea or diarrhea.
Excessive intake can strain kidney function, especially in those with preexisting kidney disease.
Hypersensitivity reactions are rare but possible.
Avoid supplementation if you have kidney disease unless supervised by a healthcare professional.
Use only with clinician monitoring if taking medications impacting protein metabolism, such as thyroid drugs or corticosteroids.

Known interactions with medications

Can interact with medications for thyroid conditions, corticosteroids, and others impacting protein metabolism.

Contraindications / special precautions

Chronic kidney disease
Rare metabolic disorders involving amino acid processing

interactions

Important interactions between active ingredient ↔ supplement / medication / food

Amino acids may interact with certain medications and conditions, influencing their absorption or metabolism.

Increased protein or amino acid intake can impact medications that alter protein metabolism (e.g., thyroid drugs, corticosteroids).

drug · medications affecting protein metabolism

CautionLimited

Why

Medications such as thyroid hormone or corticosteroids may require dietary protein or amino acid adjustments for optimal effect and safety.

recommendation

Monitor medication effectiveness and side effects; adjustments may be required.

1 · NIH Office of Dietary Supplements – Amino Acids Fact Sheet

mechanisms of action

Brief explanations of how it works

Protein Synthesis

Amino acids serve as the building blocks for new proteins, essential for muscle maintenance, repair, and growth.

1 · NIH Office of Dietary Supplements – Amino Acids Fact Sheet 2 · Journal of the International Society of Sports Nutrition – Review on BCAA Supplementation

Neurotransmitter Precursor

Some amino acids act as precursors for neurotransmitters involved in mood and sleep regulation, like serotonin (from tryptophan).

3 · NIH: Effects of Tryptophan on Mood and Sleep

Immune Support and Gut Barrier

Amino acids such as glutamine play roles in immune cell function and help maintain the integrity of the intestinal barrier, which is crucial during stress or illness.

4 · British Journal of Nutrition – Glutamine and Immune Function

Sources & References

Primary literature and reviews on which these statements are based

5 sources

NIH Office of Dietary Supplements – Amino Acids Fact Sheet

Journal of the International Society of Sports Nutrition – Review on BCAA Supplementation

NIH: Effects of Tryptophan on Mood and Sleep

British Journal of Nutrition – Glutamine and Immune Function

WebMD – Glutamine Supplement Information

Laatst bijgewerkt: 8 februari 2026

This information is for educational purposes only and does not replace medical advice.