Proline & Lysine®
Botanicals with NutrientsBrand: Source Naturals
Functions
Net Contents
120 Tablet(s)
Serving Size
2–4 Tablet(s)
Servings Per Container
30
Supplement Form
Tablet or Pill
Bar Code (UPC/SKU)
0 21078 00758 6
Product Version
SN0758 REV A204-C FG-106366
Label Analysis
Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.
9 distinct active ingredients are disclosed in Supplement Facts.
Every active ingredient discloses a specific amount per serving.
5 ingredients report a %DV; 1 meet or exceed 100% DV.
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: 2–4 Tablet(s) · 1 per day
| Ingredient | Amount Per Serving | % Daily Value |
|---|---|---|
| Calories | 24 Calorie(s) | — |
| Total Carbohydrate | 2 Gram(s) | 1% |
| Dietary Fiber | 1 Gram(s) | 4% |
| Vitamin C(Ascorbic Acid, Calcium Ascorbate) | 1000 mg | 1111% |
| Calcium(Calcium Ascorbate) | 66 mg | 5% |
| Magnesium(Magnesium Citrate) | 46 mg | 11% |
| L-Lysine(L-Lysine Hydrochloride) | 1.1 Gram(s) | — |
| L-Proline | 1.1 Gram(s) | — |
| Grape seed extract | 100 mg | — |
| Hawthorn berry extract | 100 mg | — |
Percent Daily Values (% DV) are based on a 2,000 calorie diet.
Other Ingredients
Target Groups
Label Claims
Directions & Suggested Use
Suggested/Recommended/Usage/Directions
Suggested Use: 2 to 4 tablets daily with meals.
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
Formula re: Contains
Proline & Lysine 550 mg
Formula re: Contains
L-Lysine is one of 9 essential amino acids that cannot be made in the body. It is the basic raw material for carnitine synthesis. L-Proline can be made in the body, but low protein/vegetarian diets may not always promote optimal L-proline production. L-Lysine and L-proline amino acids are the precursors of hydroxylysine (HL) and hydroxyproline (HP), two constituents of collagen. Collagen is an essential component of arterial linings. Vitamin C, a strong antioxidant, is also essential for the production of collagen. Hawthorn berry and grape seed extract are potent natural antioxidants due to their high levels of proanthocyanidins. These proanthocyanidin-esters are excellent free radical scavengers.
Formulation re: Other
Note: Natural plant variations may affect tablet color.
Formulation re: Vegetarian/Vegan
Suitable for vegetarians.
Formulation re: Does NOT Contain
Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, 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
Brand IP Statement(s) re: (c), (TM), (SM)
Copyright SOURCE NATURALS, INC.
Manufacturer & Distributor
Distributor
Source Naturals, Inc.
P. O. Box 2118, Santa Cruz, CA, 95062
Market Reference
Source Naturals L Proline L Lysine
iHerb4.7(857)$15.78L-Lysine Source Naturals
Walmart - intohealth.com4.7(1500)$10.00Source Naturals L-Proline Powder
Instacart4.7(193)$13.59Source Naturals Wellness Formula
PureFormulas.com3.9(2500)$9.79Source Naturals, L-Lysine Freeform Powder
Down to Earth Organic & Natural$6.59LowestSource Naturals L-Lysine 100 Tablets
GoSupps.com4.7(1500)$29.99Lysine Supreme
SeeBeyond$40.00Hanoju L-Lysine + L-Proline 90 capsules
vitadvice.com4.5(2)$21.43
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.
New Chapter Inc.
5.0 (16)Vitamin & supplements store
90 Technology Dr, Brattleboro, VT 05301
Bee-zt Mode Supplements
Vitamin & supplements store
464 Putney Rd, Brattleboro, VT 05301
Commitrx Supplements LLC
Vitamin & supplements store
290 Pearl St, Keene, NH 03431
NaturChoice
Vitamin & supplements store
387 Park Ave, Keene, NH 03431
Nutrishop Fitchburg
5.0 (277)Vitamin & supplements store
228 Whalon St, Fitchburg, MA 01420
Moss Nutrition Products
4.4 (8)Manufacturer
380 Russell St, Hadley, MA 01035
Health Equations
Vitamin & supplements store
436 River St, Athens, VT 05143
Whole Family Products
5.0 (15)Health food store
30 Westview Rd, Bedford, NH 03110
Research & Studies
Natural antioxidants: chemistry, health effects, and applications
F Shahidi - 1997 - books.google.com
… Antioxidant activity of amino acids such as proline and lysine has also been demonstrated in bulk oils (28). However, amino acids may exert a prooxidant effect in the absence of metals …
1997651 citationsHydrolyzed collagen: Exploring its applications in the food and beverage industries and assessing its impact on human health–A comprehensive review
W Al Hajj, M Salla, M Krayem, S Khaled, HF Hassan… - Heliyon, 2024 - cell.com
… by proline and lysine residue hydroxylation using the hydroxylase enzymes prolyl-4-hydroxylase, lysine … At the final step of posttranslational modifications, the hydroxyl groups on lysine …
2024112 citationsL-Citrulline: a non-essential amino acid with important roles in human health
E Aguayo, A Martínez-Sánchez, B Fernández-Lobato… - Applied Sciences, 2021 - mdpi.com
… proline is also a precursor of CIT in the small intestine in enterocytes of postnatal pigs and healthy … and higher glutamine, alanine and lysine plasma concentrations, and even lead to …
2021113 citationsProline and hydroxyproline metabolism: implications for animal and human nutrition
G Wu, FW Bazer, RC Burghardt, GA Johnson, SW Kim… - Amino acids, 2011 - Springer
… Based on its regulatory roles in cellular biochemistry, proline can be considered as a … strategies of dietary supplementation with proline or hydroxyproline to benefit health, growth…
2011861 citationsBee products as valuable nutritional ingredients: Determination of broad free amino acid profiles in bee pollen, royal jelly, and propolis
N Rzetecka, E Matuszewska, S Plewa… - Journal of Food …, 2024 - Elsevier
… origin. The samples were collected from the hives of Apis mellifera bees in the apiaries … mg/g), lysine in royal jelly (2.05 mg/g) and valine in propolis (0.006 mg/g). Proline was the most …
202435 citationsLysine: Sources, Metabolism, Physiological Importance, and Use as a Supplement
M Holeček - International Journal of Molecular Sciences, 2025 - mdpi.com
… The first part of this study examines lysine sources, requirements, transport through the … beneficial effects of lysine supplementation observed in people consuming a lysine-deficient diet …
202525 citations
Related News
Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2022-11-22. DSLD Label ID: 274808. 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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