L-leucine in food supplements
3,277 supplements declared in France contain L-leucine as a substance or active ingredient.
Declarations also use the name: Leucine. Separate page, as the form (L or D) is not always stated.
Other names in the Compl'Alim list: L-leucine.
Compl'Alim declarations. Compl'Alim, food supplement declarations (France), retrieved 15 November 2026.
In plain words
À quoi il sert, selon les fabricants
Objectives most often stated for supplements that contain it (L-leucine): sport (1636 produits), croissance et developpement (93 produits), immunité (66 produits), système nerveux (64 produits), antioxydant (63 produits).
These are the objectives manufacturers declared to the authorities, not proven effects. On the packaging, only health claims authorised by the EU may be written.
Compl'Alim, food supplement declarations (France), retrieved 15 November 2026.
What we know about this ingredient
Associated research
ClinicalTrials.gov · A trial is not proof: it tests a hypothesis.
- NCT06580145 : Leucine in Midlife Depression
RECRUITING · PHASE2 · Major Depression · 2026-09-11 · L-leucine
Searched on 1 November 2026.
Scientific publications (PubMed)
668 records published in the five years before 12 November 2026. The name is searched in the title or abstract; derivatives and passing mentions can be counted. This count does not measure effectiveness.
Searched on 12 November 2026.
Most recent systematic reviews and meta-analyses:
- PMID 42965751. Pharmacological Interventions for Neurological Manifestations of Ataxia-Telangiectasia: An Updated Systematic Review and Meta-analysis of Randomized Controlled Trials. (2026, Cerebellum (London, England))
- PMID 38345088. Nutritional interventions for preventing and treating pressure ulcers. (2024, The Cochrane database of systematic reviews)
- PMID 37692424. Impact of drought on soil microbial biomass and extracellular enzyme activity. (2023, Frontiers in plant science)
What health agencies say
An opinion says what the agency recommends; it is not a rule binding on the product.
The BfR derived, for adults, a guidance value of 4.0 g per day for isolated leucine (alone or with the other branched-chain amino acids) taken in addition to the normal diet. It is based on animal data with uncertainty factors.
What the registers say, country by country
Each line repeats what an official register says on the date it was consulted. Not being in a register means neither allowed nor banned.
Compl'Alim ingredient list (France): listed.
Compl'Alim, reference list of ingredients, retrieved 21 October 2026.
Canada, licensed natural health products (LNHPD): 1311 products.
Licensed Natural Health Products Database (LNHPD), Health Canada: licensed products, ingredients, doses, uses and risks, retrieved 27 October 2026.
Contains information licensed under the Open Government Licence – Canada (Health Canada, LNHPD)
Licence du gouvernement ouvert – Canada 2.0 (OGL-Canada 2.0)
United States, supplement labels (DSLD; supplements need no prior approval): 2737 products.
Dietary Supplement Label Database (DSLD), US National Institutes of Health: current and off-market labels, retrieved 27 October 2026.
Source: NIH Office of Dietary Supplements, Dietary Supplement Label Database (CC0); US market labels.
Malaysia, registered products: 15 products.
NPRA, Malaysian pharmaceutical products register, retrieved 27 October 2026.
Ministry of Health Malaysia / NPRA, Pharmaceutical Products, CC BY 4.0
Taiwan, registered products: 52 products.
TFDA, Taiwan tablets, capsules and medical nutrition registers, retrieved 27 October 2026.
Taiwan Food and Drug Administration (TFDA), Open Government Data License, version 1.0
United States, supplements listed by the USDA: 36 products.
USDA FoodData Central Branded, supplement cohort, retrieved 15 November 2026.
Source: U.S. Department of Agriculture, Agricultural Research Service, FoodData Central, Branded Foods. Data published under CC0 1.0 Universal, https://creativecommons.org/publicdomain/zero/1.0/.
Products
- BCAA 8:1:1 Prozis, poudre, flavour mangue-pêche, earlier declaration, replaced by the 2025 declaration
- BCAA 8:1:1 Prozis, poudre, flavour pêche et fruit de la passion, earlier declaration, replaced by the 2025 declaration
- BCAA 8:1:1 Prozis, poudre, flavour fruits tropicaux, earlier declaration, replaced by the 2025 declaration
- BCAA 8:1:1 ONSALESIT S.A., comprimé, earlier declaration, replaced by the 2025 declaration
- BCAA 8:1:1 ONSALESIT S.A., poudre, flavour orange, earlier declaration, replaced by the 2025 declaration
- BCAA 8:1:1 ONSALESIT S.A., poudre, flavour neutre, earlier declaration, replaced by the 2025 declaration
- BCAA 8:1:1 PROZIS, comprimé, earlier declaration, replaced by the 2025 declaration
- BCAA 8:1:1 Zéro Eric Favre, poudre, flavour pomme verte, earlier declaration, replaced by the 2024 declaration
- BCAA 8:1:1 Zéro Eric Favre, poudre, flavour duo de citrons (citron - citron vert), earlier declaration, replaced by the 2024 declaration
- BCAA 8:1:1 Zéro Eric Favre, poudre, flavour thé pêche, earlier declaration, replaced by the 2024 declaration
- BCAA 8:1:1 Zéro Eric Favre, poudre, flavour kiwi poire, earlier declaration, replaced by the 2024 declaration
- BCAA 8:1:1 Zéro Eric Favre, poudre, flavour pina colada, earlier declaration, replaced by the 2024 declaration
- BCAA 8:1:1 Zéro Eric Favre, poudre, flavour blue raspberry, earlier declaration, replaced by the 2024 declaration
- BCAA 8:1:1 Zéro poudre, flavour fraise basilic, earlier declaration, replaced by the 2024 declaration
- BCAA FLASH ZERO poudre, flavour ananas-mangue, earlier declaration, replaced by the 2017 declaration
- BCAA XPRESS SCITEC NUTRITION, sachet, flavour orange sanguine, earlier declaration, replaced by the 2018 declaration
- BCAA'S 2:1:1 INSTANT POWDER 2.0 HSN, poudre, earlier declaration, replaced by the 2026 declaration
- BCAA'S 4:1:1 INSTANT POWDER 2.0 HSN, poudre, earlier declaration, replaced by the 2026 declaration
- BCAA+B6 BioTechUSA, comprimé, earlier declaration, replaced by the 2023 declaration
- BCAA´S ZERO IO GENIX, poudre, flavour bubble cola, withdrawn from the market
- BCAA´S ZERO IO GENIX, poudre, flavour green apple, withdrawn from the market
- BCAA´S ZERO IO GENIX, poudre, flavour coco et lime, withdrawn from the market
- BLUEBERRY EXTRACT HSN, capsule, withdrawn from the market
- BORE comprimé, earlier declaration, replaced by the 2026 declaration
- Big Shot Pre-Workout PROZIS, poudre, flavour explosion de fruit, earlier declaration, replaced by the 2026 declaration
- CAFFEINE SR HSN, capsule, earlier declaration, replaced by the 2026 declaration
- CERAMIDES (CERAMOSIDESTM) HSN, capsule, withdrawn from the market
- CHELATED MAGNESIUM (Albion Minerals) HSN, autre : capsules végétales, withdrawn from the market
- CHELATED MAGNESIUM (Albion™ Minerals) HSN, capsule, withdrawn from the market
- COMPLEXE ARTICULATION EAFIT, poudre, declaration 296231, withdrawn from the market
- COMPLEXE ARTICULATION EAFIT, poudre, declaration 303348, withdrawn from the market
- COMPLEXE RECOVERY AMINO+ gélule, earlier declaration, replaced by the 2026 declaration
- CORDYCEPS SINENSIS EXTRACT HSN, capsule, earlier declaration, replaced by the 2025 declaration
- CYSTI CARE HSN, capsule, earlier declaration, replaced by the 2026 declaration
- Circulation veinotonic matin gélule, earlier declaration, replaced by the 2026 declaration
- Complexe BCAA Affynutris, gélule, withdrawn from the market
- CreaTor BioTechUSA, gélule, declaration 161354, earlier declaration, replaced by the 2023 declaration
- CreaTor BioTechUSA, gélule, declaration 166622, earlier declaration, replaced by the 2023 declaration
- Creatmax Energized Orange First Iron Systems, poudre, flavour orange, earlier declaration, replaced by the 2022 declaration
- D-MANNOSE 500 MG HSN, capsule, earlier declaration, replaced by the 2026 declaration
- DAILY ENERGY HSN, comprimé, withdrawn from the market
- DAILY TWO HSN, capsule, earlier declaration, replaced by the 2026 declaration
- DAILY TWO (IRON & IODINE FREE) HSN, capsule, earlier declaration, replaced by the 2026 declaration
- Dymatize BCAAs Branched Chain Amino Acids poudre, withdrawn from the market
- EAA PROZIS, comprimé, earlier declaration, replaced by the 2026 declaration
- EAA (Blackcurrant) Alpha01, poudre, flavour cassis, earlier declaration, replaced by the 2026 declaration
- EAA + BCAA Lemon Addict Sport Nutrition, poudre, withdrawn from the market
- EAA - Acides Aminés Essentiels PROZIS, poudre, flavour cola, earlier declaration, replaced by the 2020 declaration
- EAA - Acides Aminés Essentiels PROZIS, poudre, flavour pomme verte, earlier declaration, replaced by the 2020 declaration
- EAA - Acides Aminés Essentiels PROZIS, poudre, flavour citron-citron vert, earlier declaration, replaced by the 2020 declaration
- EAA - Acides Aminés Essentiels PROZIS, poudre, flavour mangue-pêche, earlier declaration, replaced by the 2020 declaration
- EAA - Acides Aminés Essentiels PROZIS, poudre, flavour (sans goût), earlier declaration, replaced by the 2020 declaration
- EAA with Histidine PROZIS, poudre, flavour mangue-pêche, earlier declaration, replaced by the 2025 declaration
- EAAs Tabs PROZIS, comprimé, withdrawn from the market
- ESSENTIAL AMINO ENERGY poudre, flavour pamplemousse, withdrawn from the market
- ESSENTIAL AMINOACIDS 150 COMPRIMÉS 1600 MG HX NUTRITION, comprimé, withdrawn from the market
- EVO 2:1:1 + Vitamin B6 and Vitamin B12 HSN, comprimé, earlier declaration, replaced by the 2026 declaration
- EVOBCAA'S COMPLEX HSN, poudre, flavour apple, withdrawn from the market
- EVOBCAA'S COMPLEX HSN, poudre, flavour blackcurrant, withdrawn from the market
- EVOBCAA'S COMPLEX HSN, poudre, flavour watermelon, withdrawn from the market
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- intraKID All-In-One All Natural Raspberry Flavor Supplement from the US market
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- Alpha Brain Instant Blackberry Lemonade Flavor Supplement from the US market
- Alpha Brain Instant Pineapple Punch Flavor Supplement from the US market
- Sheer BCAA Supplement from the US market
- Leucine Supplement from the US market, 820103456494
- Opus Red Berry Candy Supplement from the US market
- Magnum DNA Supplement from the US market
- Opus Extreme Intra-Workout Twister Pop Supplement from the US market
- Optimal Amino Blend Supplement from the US market
- AminoX Edge Fruit Punch Supplement from the US market
- AminoX Edge Strawberry Orange Supplement from the US market
- AminoX Edge Watermelon Supplement from the US market
- Clean BCAAs Watermelon Supplement from the US market
- AminoX Unflavored Supplement from the US market
- AminoX Watermelon Supplement from the US market
- AminoX Green Apple Supplement from the US market
- AminoX Fruit Punch Supplement from the US market
- AminoX Grape Supplement from the US market
- AminoX Blue Raz Supplement from the US market
- Amino X Tropical Pineapple Supplement from the US market
- Non-Caffeinated Amino X Strawberry Dragonfruit Supplement from the US market
- AminoX Strawberry Orange Supplement from the US market, 834266004218
- AminoX Strawberry Orange Supplement from the US market, 834266004225
- R3Build Edge Fruit Punch Supplement from the US market
- R3Build Edge Green Apple Supplement from the US market
- R3Build Edge Strawberry Orange Supplement from the US market