Forest Leaf D-Mannose Defense, Maximum Strength, 120 Vegetarian Capsules supplement bottle
Forest Leaf

D-Mannose Defense, Maximum Strength, 120 Vegetarian Capsules

What We Researched
4 active ingredients analyzed · 3 inactive ingredients decoded · 2 retailers compared · Last updated: Mar 2026
73
Product Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin C (Ascorbic Acid) 20 mg 22%
D-Mannose 1,000 mg **
Cranberry Fruit 4:1 Extract(Vaccinium macrocarpon)(Providing 400 mg of Cranberry Fruit) 100 mg **
Hibiscus Flower(Hibiscus sabdariffa) 200 mg **
Bioavailability Very Good

Absorption Rating

  • Vitamin C (Ascorbic Acid) Fair
  • D-Mannose Good
  • Cranberry Fruit 4:1 Extract(Vaccinium macrocarpon)(Providing 400 mg of Cranberry Fruit) Fair
  • Hibiscus Flower(Hibiscus sabdariffa) Good
Other Ingredients Excellent

Fillers & Additives

  • Hypromellose (Capsule)
  • Microcrystalline Cellulose
  • Vegetable Magnesium Stearate and Silicon Dioxide
Efficacy Very Poor

Dosage Analysis

  • Vitamin C (Ascorbic Acid) 20 mg Under-dosed
  • D-Mannose 1,000 mg Under-dosed
  • Cranberry Fruit 4:1 Extract(Vaccinium macrocarpon)(Providing 400 mg of Cranberry Fruit) 100 mg High
  • Hibiscus Flower(Hibiscus sabdariffa) 200 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Vitamin C (Ascorbic Acid) 20 mg 22%
D-Mannose 1,000 mg **
Cranberry Fruit 4:1 Extract(Vaccinium macrocarpon)(Providing 400 mg of Cranberry Fruit) 100 mg **
Hibiscus Flower(Hibiscus sabdariffa) 200 mg **

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Hypromellose (Capsule) Safe

It is used as a material for making vegetarian capsules.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Vegetable Magnesium Stearate and Silicon Dioxide Generally_safe

It is used to prevent ingredients from sticking to manufacturing equipment and improve powder flow.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$25$24$23$22$21 Mar 12 $23.00
iHerb

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

Brand Trust Report
Forest Leaf

Founded 2016 · Garden Grove, CA, USA (mailing address) & Brooklyn, NY, USA (returns address) · 31 products · forestleaf.com/

Transparency

1 claim
Third Party Testing Claim — Claimed Source
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Frequently Asked Questions
Is Forest Leaf D-Mannose Defense, Maximum Strength a good supplement?

Forest Leaf D-Mannose Defense, Maximum Strength, 120 Vegetarian Capsules received a product quality score of 73/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 4 active ingredients with 60 servings per container. Of the 3 inactive ingredients, 2 are rated safe and 0 are flagged for review.

What are the ingredients in Forest Leaf D-Mannose Defense, Maximum Strength?

Forest Leaf D-Mannose Defense, Maximum Strength contains 4 active ingredients: Vitamin C (Ascorbic Acid) (20 mg), D-Mannose (1,000 mg), Cranberry Fruit 4:1 Extract(Vaccinium macrocarpon)(Providing 400 mg of Cranberry Fruit) (100 mg), Hibiscus Flower(Hibiscus sabdariffa) (200 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Forest Leaf D-Mannose Defense, Maximum Strength safe to take?

Forest Leaf D-Mannose Defense, Maximum Strength, 120 Vegetarian Capsules has been analyzed for ingredient safety across all its components. 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.