Brand
Source Naturals
Category
L-Lysine
Recorded price
$16.93
Price per serving
$0.56

Supplement facts

Serving size
4 Tablet(s)
Servings per container
30
IngredientAmount per serving% daily value
Calories20—
Total Carbohydrates2 g1%
Vitamin C1147 mg1,912%
Calcium66 mg7%
Magnesium46 mg12%
L-Lysine1.1 g—
L-Lysine Hydrochloride, Crystalline Part of L-Lysine1374 mg—
L-Proline1.1 g—
Proanthodyn100 mg—
Hawthorn Berry Extract100 mg—

Other ingredients

  • Sorbitol
  • Stearic Acid
  • Microcrystalline Cellulose
  • Silicon Dioxide, Colloidal
  • Magnesium Stearate

Directions on the label

2 to 4 tablets daily with meals.

Label data from the Dietary Supplement Label Database.

Label data as of

Product score

87.2 / 100Excellent
Category average
82.6 / 100
Average for similar products
87.2 / 100

At two tablets, this provides a practical supplemental amount of each named amino acid, plus vitamin C; the label does not establish a specific therapeutic use.

Scoring criteria
  • Quantity

    100 / 100

    The evaluated routine provides about 550 mg each of L-lysine and L-proline, a reasonable supplemental amount for the general amino-acid role inferred from the label.

  • Form

    75 / 100

    Crystalline L-lysine hydrochloride and L-proline are conventional amino-acid forms without a clear comparative absorption or tolerability advantage.

  • Convenience

    85 / 100

    The directions allow 2–4 tablets daily; I assess the lowest routine, two tablets with a meal, providing about 550 mg each of lysine and proline and 574 mg vitamin C.

  • Label accuracy

    100 / 100

    The panel’s 1.1 g amounts per four-tablet serving correspond to the title’s 275 mg per tablet, with no evident contradiction.

  • Formula balance

    75 / 100

    The two amino acids form a coherent formula, with no established compatibility issue or distinct formula-level advantage evident from the label.

  • Purity

    75 / 100

    No product-specific purity controls or quality defects are established by the supplied information.

  • Cofactors

    50 / 100

    The routine provides about 574 mg vitamin C, a meaningful complementary ingredient for collagen-related support, though added benefit depends on context.

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