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
- PREMIUM MULTI (IRON & IODINE FREE) VITAMINALIA, gélule, declared in 2026
- PRENATAL**CARE HSN, gélule, declared in 2025
- PRENATAL**CARE (IODINE FREE) HSN, gélule, declared in 2025
- PREWORKOUT FRUITS ROUGES 250g DOMYOS, poudre, flavour fruits rouges, declared in 2019
- PREWORKOUT TROPICAL 250g DOMYOS, poudre, flavour tropical, declared in 2019
- PRIME BCAA Glutamine poudre, flavour pomme verte, declared in 2018
- PRO BCAA'S 2.1.1 NUTRITION CASH CENTER, comprimé, declared in 2018
- PRO BCAA'S 8.1.1 NUTRITION CASH CENTER, comprimé, declared in 2018
- PRO PERFORMANCE - BCAA 5000 GNC, poudre, declared in 2019
- PRO PERFORMANCE DAILY ENERGY MIXED BERRY FLAVOURED GNC, poudre, flavour mixed berry, declared in 2019
- PRO PERFORMANCE DAILY ENERGY TROPICAL FRUIT FLAVOURED GNC, poudre, flavour tropical fruit, declared in 2019
- PROBIONE BALANCE ADULT NUTRICEL, comprimé, declared in 2025
- PROMETEUS - MODERN BCAA NUTRIWEB, poudre, flavour blue raspberry, declared in 2023
- PROMETEUS - MODERN BCAA NUTRIWEB, poudre, flavour grape bubble gum, declared in 2023
- PROMETEUS - MODERN BCAA NUTRIWEB, poudre, flavour fruit punch, declared in 2023
- PROMETEUS - MODERN BCAA NUTRIWEB, poudre, flavour green apple, declared in 2023
- PROMETEUS - MODERN BCAA NUTRIWEB, poudre, flavour mangue orange, declared in 2023
- PROMETEUS - MODERN BCAA NUTRIWEB, poudre, flavour the à la pêche, declared in 2023
- PROMETEUS - MODERN BCAA NUTRIWEB, poudre, flavour ananas-fraise, declared in 2023
- PROMETEUS - MODERN BCAA NUTRIWEB, poudre, flavour pink lemonade, declared in 2023
- PROMETEUS - MODERN BCAA NUTRIWEB, poudre, flavour pasteque, declared in 2023
- PROTIADVANCE Inovance, poudre, flavour cacao, declared in 2026
- PURE 8.1.1 BCAAS XL LABS, poudre, flavour pêche, declared in 2020
- PURE 8.1.1 BCAAS XL LABS, poudre, flavour ananas, declared in 2020
- PURE 8.1.1 BCAAS XL LABS, poudre, flavour lemonade, declared in 2020
- PURE AMINO NUTRYTEC, poudre, flavour mojito, declared in 2018
- PURE AMINO NUTRYTEC, poudre, flavour citron, declared in 2018
- PURE BCAA 2:1:1 PURE AM NUTRITION, gélule, declared in 2023
- PURE BCAA 2:1:1 gélule, declared in 2021
- PURE BCAA 4:1:1 PURE AM NUTRITION, poudre, declared in 2023
- PURE BCAA 8.1.1 NUTRYTEC, poudre, flavour pêche, declared in 2018
- PURE BCAA R.2.1.1 NUTRYTEC, capsule, declared in 2017
- PURE BCAA R.4.1.1 NUTRYTEC, capsule, declared in 2017
- PURE BCAA R.4.1.1 NUTRYTEC, poudre, declared in 2017
- PURE BCAA'S B6 NUTRYTEC, comprimé, declared in 2018
- PURE BCAAS ELECTRO PRO 8.1.1 XL LAB, poudre, flavour lemon, declared in 2020
- PURE BCAAS ELECTRO PRO 8.1.1 XL LAB, poudre, flavour apple, declared in 2020
- PURE EAA XL LAB, poudre, flavour cherry, declared in 2020
- PURE EAA XL LAB, poudre, flavour apple, declared in 2020
- PURE GLUTAMINE + BCAA NUTRYTEC, poudre, flavour fruits, declared in 2017
- PURE GLUTAMINE + BCAA NUTRYTEC, poudre, flavour cola, declared in 2017
- PURE GLUTAMINE + BCAA NUTRYTEC, poudre, flavour fruit des bois, declared in 2017
- PURE GLUTAMINE + BCAA NUTRYTEC, poudre, flavour kiwi, declared in 2017
- PURE GLUTAMINE + BCAA NUTRYTEC, poudre, flavour lime citron, declared in 2017
- PURE GLUTAMINE + BCAA NUTRYTEC, poudre, flavour pastèque, declared in 2017
- PURE IBCAA XPN, poudre, flavour punch, declared in 2018
- PURE IBCAA XPN, poudre, flavour orange, declared in 2018
- PURE IBCAA XPN, poudre, flavour pêche, declared in 2018
- PURE IBCAA XPN, poudre, flavour framboise bleue, declared in 2018
- PURE NIGHT NUTRYTEC, poudre, flavour citron, declared in 2018
- PURE NIGHT NUTRYTEC, poudre, flavour mojito, declared in 2018
- PURE PHARMA - ESSENTIAL AMINO ACIDS Lemon ICED TEA poudre, flavour thé glacé au citron, declared in 2025
- PURE PHARMA - ESSENTIAL AMINO ACIDS PEACH ICED TEA poudre, flavour thé glacé à la pêche, declared in 2025
- PURE PROFESSIONAL - ANABOLIC BULK saveur CHOCOLAT TSUNAMI NUTRITION, poudre, flavour chocolat, declared in 2025
- PURE PROFESSIONAL - ANABOLIC BULK saveur VANILLE TSUNAMI NUTRITION, poudre, flavour vanille, declared in 2025
- PURE PROFESSIONAL - BCAA 4:1:1 PROFESSIONAL PURE PROFESSIONAL, comprimé, declared in 2024
- PURE PROFESSIONAL - BCAA 8:1:1 PROFESSIONAL comprimé, declared in 2024
- PURE PROFESSIONAL - BLP99.9 811 PURE PROFESSIONAL, comprimé, declared in 2025
- PURE PROFESSIONAL - BLP99.9 811 Comprimés TSUNAMI NUTRITION, comprimé, declared in 2025
- PURE PROFESSIONAL - ESSENTIAL AMINO Poudre (Saveur citron) TSUNAMI NUTRITION, poudre, flavour citron, declared in 2025
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