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Source Naturals L-Proline L-Lysine

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Source Naturals
Supplements: L-Lysine L-Proline
Benefits: Chronic Fatigue Syndrome (CFS) Herpes Shingles
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Ranked 10th among 19 L-Lysine products.
Ranked 4th among 6 L-Proline products.
Available here from $ 14.1

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Overview

Source Naturals L-Proline L-Lysine is a dietary supplement formulated with the amino acids L-lysine and L-proline, along with vitamin C, hawthorn berry, and grape seed extract. The formula is designed to provide nutritional support related to collagen production, with the amino acids serving as precursors to hydroxylysine and hydroxyproline, two compounds that are part of collagen structure.

L-lysine is an essential amino acid that the body cannot produce on its own, while L-proline can be made in the body, although lower-protein or vegetarian eating patterns may not always support optimal production. Vitamin C is included as a nutrient involved in collagen formation, and the botanical extracts contribute antioxidant support through their naturally occurring proanthocyanidins.

This supplement is suitable for vegetarians and is offered in tablet form for daily use with meals. It is positioned as a multi-ingredient amino acid formula rather than a simple single-nutrient product.

Key Features & Benefits

  • Provides L-lysine and L-proline, two amino acids associated with collagen-related nutrition.
  • Includes vitamin C, which is essential for normal collagen production.
  • Contains hawthorn berry and grape seed extract for antioxidant support.
  • Grape seed extract supplies proanthocyanidins, naturally occurring free radical scavengers.
  • Made as a dietary supplement in tablet form.
  • Suitable for vegetarians.
  • Intended for use with meals as part of a daily routine.
  • Formulated without yeast, dairy, egg, gluten, soy, or wheat.
  • Contains no sugar, salt, preservatives, or artificial color, flavor, or fragrance.

Specifications

  • Brand: Source Naturals
  • Product name: L-Proline L-Lysine
  • Supplement type: Dietary supplement
  • Active ingredients: L-lysine, L-proline, vitamin C, hawthorn berry, grape seed extract
  • Dosage form: Tablets
  • Dietary suitability: Suitable for vegetarians

Suggested Use

Take 2 to 4 tablets daily with meals.

Other Ingredients

Microcrystalline cellulose, sorbitol, stearic acid, silica, and magnesium stearate.

Allergen & Dietary Information

This product contains no yeast, dairy, egg, gluten, soy, or wheat. It is also made without sugar, salt, preservatives, or artificial color, flavor, or fragrance. The formula is suitable for vegetarians.

Warnings

  • If you are pregnant, may become pregnant, or are breastfeeding, consult a health care professional before using this product.
  • Natural variations in plant ingredients may cause differences in tablet color.
  • Do not use the product if the tamper-evident seal is broken or missing.
  • Keep out of reach of children.

Storage

Store the product in a way that preserves the integrity of the seal and keep it out of the reach of children.

This formula combines amino acids, vitamin C, and botanical extracts to support collagen-related nutrition, with vegetarian-friendly tablets and a broad set of ingredient exclusions.

Disclaimer

The information provided on this page is intended for general informational purposes only and should not be considered medical advice. Product formulations, ingredients, packaging, and labeling may change over time. Always read the label, warnings, and directions provided with the product before use. If you are pregnant, nursing, taking medication, or have a medical condition, consult a qualified healthcare professional before using any dietary supplement.

Source Naturals L-Proline L-Lysine FACTS AND ALTERNATIVES COMPARISON

  4
Source Naturals L-Proline L-Lysine Source Naturals
Supplement Rating
Source Naturals L-Proline L-Lysine
13
Life Extension L-Lysine 620 mg Life Extension
Supplement Rating
Life Extension L-Lysine 620 mg
3
Jarrow Formulas L-Lysine Jarrow Formulas
Supplement Rating
Jarrow Formulas L-Lysine
1
Thorne Research L-Lysine Thorne Research
Supplement Rating
Thorne Research L-Lysine
Serving Size 4 Tablets 1 Vegetarian Capsule 1 Capsule  One Capsule
Price/Serving $0.54 $0.1 81% $0.1 81% $0.26 52%
Servings Per Container 30 100 233% 100 233% 60 100%
Calories 20 missing substance or information* missing substance or information* missing substance or information*
Carbohydrate 2 g · 1%* missing substance or information* missing substance or information* missing substance or information*
Vitamin C 1,000 mg · 1,111% (as Calcium Ascorbate and Ascorbic Acid) missing substance or information* missing substance or information* missing substance or information*
Calcium 66 mg · 5% (from Calcium Ascorbate) missing substance or information* missing substance or information* missing substance or information*
Magnesium 46 mg · 11% (as magnesium citrate) missing substance or information* missing substance or information* missing substance or information*
Lysine 1.1 g · † (as L-lysine hydrochloride) 620 mg (as L-Lysine HCl) 500 mg (from L-Lysine HCl) 500 mg (as L-Lysine Monohydrochloride)
Proline 1.1 g · † missing substance or information* missing substance or information* missing substance or information*
Grape Seed Extract 100 mg (Proanthodyn) With a Procyanidolic Value of 95 missing substance or information* missing substance or information* missing substance or information*
Hawthorn 100 mg · † missing substance or information* missing substance or information* missing substance or information*
Dietary Fiber 1 g · 4%* missing substance or information* missing substance or information* missing substance or information*

*Some information on the Source Naturals L-Proline L-Lysinelabel may be missing, or it may have been written incorrectly. We work hard to keep the information accurate & up to date. Please let us know if you discover any errors.

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This content is for informational purposes only and is not a substitute for professional medical advice. Consult a qualified healthcare provider before taking any supplement.