Amino acid/Protein

L-Leucine 500 mg

by Source Naturals · Capsule

Supplement facts from the label of L-Leucine 500 mg by Source Naturals: Calories 5.0 Calorie(s), L-Leucine 1.5 Gram(s).

Label of L-Leucine 500 mg, Source Naturals
Label image: NIH DSLD · full label (PDF)
Serving size2–3 Capsule(s)
Servings per container40
Most servings a day on the label1
TypeAmino acid/Protein
Barcode021078020530
Label recordDSLD 295941 · entered 2023-08-23

Supplement Facts

IngredientPer serving% DVUpper limit (adults)
Calories5.0 Calorie(s)——
L-Leucine1.5 Gram(s)——

Upper limits: NIH ODS Fact Sheets for Health Professionals. Compared only where the unit converts and the limit applies to the form on the label.

On the label

For: Adult (18 - 50 Years) · Gluten Free · Dairy Free · Sugar Free

Claim types: Nutrient · All Other · Structure/Function

Formulation re: Other: Free-form

Formulation re: Other: Energy support

Formula re: Contains: L-Leucine is an essential amino acid, specifically classified as a "branched-chain amino acid" (BCAA). BCAAs, especially leucine, stimulate muscle protein synthesis and may be the major fuel involved in anabolic reactions. This makes them especially important for body builders and other athletes in sports that demand explosive strength.

Suggested/Recommended/Usage/Directions: Suggested Use: 2 to 3 capsules daily between meals.

Precautions re: Pregnant or Nursing or Prescription Medications: Note: If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.

Precautions re: All Other: Do not use if either tamper-evident seal is broken or missing.

This page repeats what the label says and the official upper limits for healthy adults. It is not medical advice: ask a doctor, pharmacist or registered dietitian about your own intake, especially if you are pregnant, take medicines or have a health condition.

Label data: NIH Office of Dietary Supplements, Dietary Supplement Label Database (dsld.od.nih.gov), public domain. Upper limits: NIH ODS Fact Sheets for Health Professionals (values from the Institute of Medicine, Food and Nutrition Board).