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Proline & Lysine

product on market Tablet or Pill Source Naturals Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 33% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

Vitamin C, calcium, and magnesium are supported by strong evidence for their roles in immune function, bone health, and neuromuscular regulation. These ingredients are widely researched for maintaining general physiological homeostasis. The overall evidence coverage for this specific formulation is limited.

AI-generated summary based on research evidence. Not medical advice.

Label

Product Label

Label for Proline & Lysine
Open Full PDF View on NIH DSLD →
Details

Label Data

2 Tablet(s)
Serving Size
30
Servings
Botanical with Nutrients
Product Type
33%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Calories
24 Calorie(s)
Total Carbohydrate
2 Gram(s) (1% DV)
Vitamin C
1000 mg (1111% DV)
Calcium
66 mg (5% DV)
46 mg (11% DV)
Within RDA (0.1× RDA) 316 studies (A:8, B:159)
1.1 Gram(s)
Market median: 500.0mg (159 products)
L-Proline
1.1 Gram(s)
Market median: 100.0mg (284 products) 10 studies (A:0, B:4)
Market median: 333.0mg (166 products) 9 studies (A:0, B:2)

Other Ingredients

Microcrystalline Cellulose Sorbitol Steric Acid Silica Magnesium Stearate
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested Use: 2 to 4 tablets daily with meals.

Warnings & Precautions

Note: If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.

Do not use if either tamper-evident seal is broken or missing.

Keep out of the reach of children.

Formulation Notes

Proline & Lysine 550 mg

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.

Note: Natural plant variations may affect tablet color.

Suitable for vegetarians.

Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, salt, preservatives, or artificial color, flavor or fragrance.

Metadata

Product Details

UPC / SKU0 21078 00758 6
DSLD Entry Date2022-11-22
Product TypeBotanical with Nutrients
FormTablet or Pill
BrandSource Naturals
DSLD ID274808
Data Updated2026-04-11
Research

Research Evidence

3
Research Sources
74
Avg Quality
3
Meta Analysis
A Antifibrinolytics (lysine analogues) for the prevention of bleeding in people with haematological disorders
Meta Analysis The Cochrane database of systematic reviews 2026 PubMed DOI
B Antifibrinolytics (lysine analogues) for the prevention of bleeding in people with haematological disorders
Meta Analysis The Cochrane database of systematic reviews 2016 PubMed DOI
B Antifibrinolytics (lysine analogues) for the prevention of bleeding in patients with haematological disorders
Meta Analysis The Cochrane database of systematic reviews 2013 PubMed DOI
View all evidence for Lysine →
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.