Roex L-Lysine and L-Proline, 120 Capsules supplement bottle
Roex

L-Lysine and L-Proline, 120 Capsules

What We Researched
2 active ingredients analyzed · 3 inactive ingredients decoded · 2 retailers compared · Last updated: Mar 2026
75
Product Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
L-Proline 400 mg *
L-Lysine 225 mg *
Bioavailability Excellent

Absorption Rating

  • L-Proline Good
  • L-Lysine Good
Other Ingredients Excellent

Fillers & Additives

  • Hydroxypropyl Methylcellulose
  • Silica
  • Magnesium Stearate
Efficacy Very Poor

Dosage Analysis

  • L-Proline 400 mg Under-dosed
  • L-Lysine 225 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
L-Proline 400 mg *
L-Lysine 225 mg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Hydroxypropyl Methylcellulose Safe

It is used as a coating for tablets and capsules.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$15$14$13$12$11 Mar 12 $13.49
Vitacost

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Roex

Founded 1994 · Los Alamitos, CA, USA · 5 products · roex.com/

Transparency

2 claims
Third Party Testing Claim — Claimed Source

Violation History

1 incident
Lawsuit Deceptive advertising and making false or unsubstantiated claims that their products could treat or prevent serious diseases.2009Source
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Frequently Asked Questions
Is Roex L-Lysine and L-Proline, 120 Capsules a good supplement?

Roex L-Lysine and L-Proline, 120 Capsules received a product quality score of 75/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 2 active ingredients with 120 servings per container. All 3 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives.

What are the ingredients in Roex L-Lysine and L-Proline, 120 Capsules?

Roex L-Lysine and L-Proline, 120 Capsules contains 2 active ingredients: L-Proline (400 mg), L-Lysine (225 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Roex L-Lysine and L-Proline, 120 Capsules safe to take?

Roex L-Lysine and L-Proline, 120 Capsules has been analyzed for ingredient safety across all its components. All 3 inactive ingredients — including capsule materials, fillers, and binders — are rated safe based on regulatory data and published safety research. This is a clean formulation with no controversial additives. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.