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L-Proline L-Lysine 275 mg / 275 mg

Source Naturals
4.7
(1887 ratings)
Vitamin C 1147 mg
Hawthorn 100 mg
Product Image
Score 65.0

A potent blend of L-Proline, L-Lysine, high-dose buffered Vitamin C, Hawthorn, and Grape Seed Extract for comprehensive health support. However, its significant naming discrepancy regarding amino acid dosage undermines consumer clarity and trust.

Quantity: 120 Tablet(s)Servings size: 2 Tablet(s) (60 servings)
Selected goals:
Other goals:
Immunity
General Health
Skin Health
Anti-Aging
Anti-Inflammatory Support

Score 65.0

A potent blend of L-Proline, L-Lysine, high-dose buffered Vitamin C, Hawthorn, and Grape Seed Extract for comprehensive health support. However, its significant naming discrepancy regarding amino acid dosage undermines consumer clarity and trust.

Analysis

Source Naturals' L-Proline L-Lysine product offers a comprehensive formulation aimed at supporting immunity, general health, skin, anti-aging, anti-inflammatory, heart, and cardiovascular health. It stands out with its high doses of L-Proline (1.1g per serving) and L-Lysine (1.1g per serving), crucial amino acids for collagen synthesis, combined with an impressive amount of buffered Vitamin C (over 2.2g per serving) which acts as a collagen cofactor and potent antioxidant. The inclusion of Hawthorn Berry Extract (100mg) specifically targets heart and cardiovascular well-being, while Grape Seed Extract (100mg) adds further antioxidant and vascular support. This multi-faceted approach theoretically positions it as a strong contender for its diverse goals. However, the product's naming (275mg/275mg) is severely misleading given the actual 1100mg of each amino acid per serving, leading to consumer confusion and potential misjudgment of dosage or efficacy. This fundamental labeling flaw significantly impacts consumer trust and overshadows the otherwise robust ingredient profile.

Pros
  • Contains a very high dose of buffered Vitamin C (over 2.2g per serving) which is excellent for immunity, skin health, and antioxidant support.
  • Provides substantial amounts of L-Proline and L-Lysine (1.1g each per serving), essential for collagen synthesis, benefiting skin, connective tissue, and cardiovascular health.
  • Includes beneficial botanical extracts like Hawthorn Berry and Grape Seed, which synergistically support heart health, circulation, and provide additional antioxidant benefits.
  • Offers a comprehensive, multi-ingredient approach to general wellness, anti-aging, and cardiovascular health, targeting multiple goals with one product.
  • The price per serving is reasonable considering the comprehensive blend and high dosages of key active ingredients.
Cons
  • The product name 'L-Proline L-Lysine 275 mg / 275 mg' is highly misleading, as each serving (2 tablets) actually contains 1100 mg (1.1 grams) of each amino acid, not 275 mg, creating significant consumer confusion and eroding trust.
  • The tablets may be large, requiring multiple tablets per serving (two tablets per serving), which might be inconvenient for some users.
  • The very high dosage of Vitamin C (over 2 grams per serving) may cause gastrointestinal discomfort or mild laxative effects in some sensitive individuals, even in buffered form.
Warnings
  • Individuals taking medications for heart conditions, blood pressure, or blood thinners should consult a healthcare professional before using due to the Hawthorn and Grape Seed extract content, which can interact with certain drugs.
  • High doses of Vitamin C, despite being buffered, may still cause digestive upset such as diarrhea, nausea, or abdominal cramping in sensitive individuals.
$13.88($0.23 per serving)
Pure Formulas
$ 16.09
iHerb
$ 13.88
Vitacost
$ 15.39
Ingredients
IngredientAmount per serving
Calories 20 Calorie(s)
Total Carbohydrates 2 Gram(s)
Vitamin C (Magnesium Ascorbate, Calcium Ascorbate) 1147 mg
Calcium (Calcium Ascorbate) 66 mg
Magnesium (Magnesium Ascorbate) 46 mg
L-Lysine 1.1 Gram(s)
L-Proline 1.1 Gram(s)
Proanthodyn (Grape Seed Extract) 100 mg
Hawthorn Berry Extract 100 mg
Gluten Free Adults 18–50 Dairy Free Sugar Free Vegetarian
Categories
Vitamin C 95.0
It provides an exceptionally high dose of buffered Vitamin C (2.294g per serving) from multiple forms (Magnesium Ascorbate, Calcium Ascorbate), making it highly effective for those seeking robust Vitamin C supplementation with potentially less gastric upset compared to pure ascorbic acid.
Hawthorn 80.0
The inclusion of Hawthorn Berry Extract (100mg per serving) significantly contributes to the product's cardiovascular benefits, although dedicated Hawthorn supplements might offer higher isolated dosages for individuals primarily focused on specific heart concerns.
Goals
Heart Health 95.0
This product truly excels in heart and cardiovascular support due to the synergistic effects of Hawthorn Berry (well-researched for improving heart function and blood pressure regulation), Grape Seed Extract (improves vascular health and circulation), Vitamin C (essential for vascular integrity and an antioxidant), and L-Proline/L-Lysine (crucial for the structural integrity of blood vessels and arteries).
Cardiovascular Support 95.0
This product truly excels in cardiovascular support due to the synergistic effects of Hawthorn Berry (well-researched for improving heart function and blood pressure regulation), Grape Seed Extract (improves vascular health and circulation), Vitamin C (essential for vascular integrity and an antioxidant), and L-Proline/L-Lysine (crucial for the structural integrity of blood vessels and arteries).
Immunity 90.0
The product contains a very high dose of buffered Vitamin C (over 2g per serving), which is a powerful immune system booster and antioxidant, significantly supporting various aspects of immune function and resilience.
95 Value

Gold C Vitamin C 1000 mg

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Buffered Gold C

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Hawthorn Extract 300 mg

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While the original product contained Hawthorn, this alternative offers a standardized Hawthorn extract (Vitexin-2”-O-Rhamnoside 300mg) at a higher and more clinically relevant dose than the original's unstandardized 100mg, providing more reliable cardiovascular benefits.
85 Budget

C 500 mg

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80 Budget

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Hawthorn Berry 565 mg

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At only $4 per serving, this Swanson product provides a substantial 565mg of Hawthorn, which is a much higher dose than the original product's 100mg Hawthorn content, offering better value specifically for its cardiovascular component.
95 Value

Gold C Vitamin C 1000 mg

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(358021 ratings)
This product offers 1000mg of Vitamin C for only $6 per serving, providing a high dose of a primary ingredient at an incredibly low cost per serving, representing significantly better value than the original product for general health and immunity.
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C 1000 mg

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With 1000mg of Vitamin C at an exceptionally low price of $4 per serving, this supplement delivers a potent dose of a key ingredient for vastly superior cost-effectiveness compared to the Source Naturals product.
85 Value

Blood Pressure Health

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This alternative provides 300mg of standardized Hawthorn extract (Vitexin-2”-O-Rhamnoside) for $18 per serving, which is still cheaper than the original product while offering a more effective and reliable form and dosage of Hawthorn for cardiovascular support, thus providing better value.
90 Performance

Extra Strength Hawthorn Extract 600 mg

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4.7
(1301 ratings)
This product offers a significantly higher and standardized dose of Hawthorn extract (Vitexin-2”-O-Rhamnoside 600mg) compared to the original's 100mg unstandardized extract. This provides superior efficacy for heart and cardiovascular support, making it a more potent option.
90 Performance

Buffered Gold C

California Gold Nutrition
4.8
(46051 ratings)
Like the original, this product provides buffered Vitamin C (Sodium Ascorbate) at a substantial 750mg dose. It's a high-quality, gentle form of Vitamin C and offers a comparable, if not slightly better, ingredient profile for Vitamin C at a much more competitive price.
88 Performance

Hawthorn Extract 300 mg

NOW
4.7
(2002 ratings)
While the original product contained Hawthorn, this alternative offers a standardized Hawthorn extract (Vitexin-2”-O-Rhamnoside 300mg) at a higher and more clinically relevant dose than the original's unstandardized 100mg, providing more reliable cardiovascular benefits.