Net Contents
4 Oz(s)
Serving Size
1–2 tsp
Servings Per Container
56
Supplement Form
Powder
Bar Code (UPC/SKU)
0 21078 01551 2
Product Version
SN1551 REV B161
Label Analysis
Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.
2 distinct active ingredients are disclosed in Supplement Facts.
Every active ingredient discloses a specific amount per serving.
Label states: Vegetarian, Gluten-Free.
This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.
Allergen Guide
Contains
- Milk
- Egg
- Wheat
- Soy
- Gluten
Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.
Supplement Facts
Serving Size: 1–2 tsp · 1 per day
| Ingredient | Amount Per Serving | |
|---|---|---|
| Calories | 10 Calorie(s) | — |
| L-Proline | 2 Gram(s) | — |
Not Present
Target Groups
Label Claims
Directions & Suggested Use
Suggested/Recommended/Usage/Directions
Suggested Use: 1-2 level teaspoons daily, mixed for 1 to 2 minutes with water or juice.
Warnings & Precautions
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.
Precautions re: Children
Keep out of the reach of children.
Formulation
Formulation re: Vegetarian/Vegan
Suitable for vegetarians and hypoallergenic: contains no yeast, dairy, egg, gluten, corn, soy or wheat.
Formulation re: Other
Suitable for vegetarians and hypoallergenic: contains no yeast, dairy, egg, gluten, corn, soy or wheat.
Formulation re: Does NOT Contain
Suitable for vegetarians and hypoallergenic: contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.
FDA Statements
FDA Statement of Identity
Dietary Supplement
FDA Disclaimer Statement
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
Other Label Statements
General Statements: All Other Content
L-Proline is an amino acid involved in the production of collagen and cartilage and may help support healthy joints and a healthy musculoskeletal system. L-Proline can be made in the body, but low protein/vegetarian diets may not always promote optimal protection.
General: Product/Version Code
SN1551 REV B161
Manufacturer & Distributor
Distributor
Source Naturals, Inc.
P. O. Box 2118, Santa Cruz, CA, 95062
Market Reference
Source Naturals L-Proline Powder
iHerb4.7(182)$9.74Lowest
BulkSupplements L-Proline
Target4.9(46)$19.97
L-Proline
BulkSupplements.com4.9(46)$17.97
L-Proline, 100 G
AGScientific$84.50
L-Proline 1000g Powder
Jo Mar Labs$54.40
PureBulk L-Proline Bags
PureBulk4.8(13)$31.25
Proline L Pure USP Granular Amino Acid
Prescribed For Life$33.99
L-Proline, 500 G
AGScientific$243.75
Where to Buy Locally
Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.
Showing representative supplement & health retailers — search above for stores in your area.
The Vitamin Shoppe
4.4 (104)Vitamin & supplements store
2460 Market St NE #701, Washington, DC 20018
GNC
3.9 (32)Vitamin & supplements store
1728 L St NW, Washington, DC 20036
Arlington Nutrition Corner
4.7 (71)Vitamin & supplements store
820 N Pollard St, Arlington, VA 22203
Vasonoxol®
4.9 (52)Vitamin & supplements store
206 N Washington St #100, Alexandria, VA 22314
Herbalife Nutrition Club MD
4.8 (57)Vitamin & supplements store
1425 University Blvd E #255, Hyattsville, MD 20783
GNC
4.0 (43)Vitamin & supplements store
1625 K St NW, Washington, DC 20006
The Vitamin Shoppe
4.4 (175)Vitamin & supplements store
5524 Leesburg Pike Service Rd, Falls Church, VA 22041
GNC
4.3 (48)Vitamin & supplements store
1100 S Hayes St, Arlington, VA 22202
Research & Studies
Hard-to-heal wounds: a randomised trial of an oral proline-containing supplement to aid repair
AA Mehl, AOMC Damião, SDDO Viana… - Journal of wound …, 2021 - magonlinelibrary.com
Objective: We evaluated the effects of a specialised oral nutritional supplement (ONS) containing arginine and proline, with high vitamin A, C and E, zinc and selenium content, on the …
202128 citationsImportant roles of dietary taurine, creatine, carnosine, anserine and 4-hydroxyproline in human nutrition and health
G Wu - Amino acids, 2020 - Springer
… , and hydroxyproline is negligible in many plant-source foods. Consumption of 30 g dry beef can fully meet daily physiological needs of the healthy 70-kg adult human for taurine and …
2020584 citationsL-Proline protects human sperm from heat stress-induced oxidative damage
M Moradi, M Shayestehyekta, AH Hashemian… - Amino Acids, 2026 - Springer
… , L-proline … L-proline as a protective supplement to ameliorate the detrimental effects of heat stress on human sperm quality and oxidative status, suggesting that incorporating L-proline …
2026L‐proline as a novel additive to cryopreservation media improved post‐thaw quality of human spermatozoon via reducing oxidative stress
B Moradi, A Faramarzi, S Ghasemi‐Esmailabad… - Andrologia, 2022 - Wiley Online Library
… of L-proline (Obayashi et al., 2015). Many researchers have reported that L-proline is an antioxidant and a natural … to assess effect of supplementation of L-proline on sperm quality and …
202237 citationsRisk Assessment of" Other Substances"–L-proline
K Holvik, L Frøyland, M Haugen, S Henjum, M Løvik… - 2018 - pesquisa.bvsalud.org
… of specified doses of L-proline in food supplements, and it is … NFSA, L-proline is an ingredient in food supplements sold in … , 1500 and 1800 mg/day of L-proline from food supplements. …
20181 citationsL-proline supplementation improves nitric oxide bioavailability and counteracts the blood pressure rise induced by angiotensin II in rats
J Leal, L Teixeira-Santos, D Pinho, J Afonso… - Nitric Oxide, 2019 - Elsevier
… We evaluated whether l-proline (Pro) supplementation improves redox status and nitric oxide (NO) bioavailability and prevents or delays angiotensin II (AngII)-induced hypertension. …
201934 citations
Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2017-04-25. DSLD Label ID: 72860. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.
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