Swanson Glucomannan+, 300 Capsules supplement bottle
Swanson

Glucomannan+, 300 Capsules

What We Researched
12 active ingredients analyzed · 4 inactive ingredients decoded · 6 brand certifications checked · 2 retailers compared · Last updated: Mar 2026
69
Product Score Fair
90
Brand Score Excellent

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Total Carbohydrates 1 g <1%†
Chromium (from Chromax® Chromium Picolinate) 100 mcg 285%
Konjac Glucomannan (Amorphophallus konjac) (tuber) 300 mg *
Apple Pectin 200 mg *
LipoSan ULTRA® Chitosan (from shellfish) 200 mg *
Guar Gum 200 mg *
Oat Bran Fiber (Avena sativa) 200 mg *
Psyllium Husk Fiber (Plantago ovata) 200 mg *
Gymnema sylvestre Extract (25% gymnemic acid) (leaves) 50 mg *
L-Carnitine (from L-carnitine tartrate) 20 mg *
Bioavailability Good

Absorption Rating

  • Total Carbohydrates Fair
  • Chromium (from Chromax® Chromium Picolinate) Good
  • Konjac Glucomannan (Amorphophallus konjac) (tuber) Good
  • Apple Pectin Fair
  • LipoSan ULTRA® Chitosan (from shellfish) Fair
  • Guar Gum Fair
  • Oat Bran Fiber (Avena sativa) Good
  • Psyllium Husk Fiber (Plantago ovata) Good
  • Gymnema sylvestre Extract (25% gymnemic acid) (leaves) Fair
  • L-Carnitine (from L-carnitine tartrate) Poor
Other Ingredients Excellent

Fillers & Additives

  • Gelatin
  • Calcium Palmitate
  • Rice Flour
  • Silica
Efficacy Very Poor

Dosage Analysis

  • Chromium (from Chromax® Chromium Picolinate) 100 mcg Effective
  • Konjac Glucomannan (Amorphophallus konjac) (tuber) 300 mg Under-dosed
  • Apple Pectin 200 mg Under-dosed
  • LipoSan ULTRA® Chitosan (from shellfish) 200 mg Under-dosed
  • Guar Gum 200 mg Under-dosed
  • Oat Bran Fiber (Avena sativa) 200 mg Under-dosed
  • Psyllium Husk Fiber (Plantago ovata) 200 mg Under-dosed
  • Gymnema sylvestre Extract (25% gymnemic acid) (leaves) 50 mg Under-dosed
  • L-Carnitine (from L-carnitine tartrate) 20 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Calories 5
Total Carbohydrates 1 g <1%†
Dietary Fiber 1 g 4%†
Chromium (from Chromax® Chromium Picolinate) 100 mcg 285%
Konjac Glucomannan (Amorphophallus konjac) (tuber) 300 mg *
Apple Pectin 200 mg *
LipoSan ULTRA® Chitosan (from shellfish) 200 mg *
Guar Gum 200 mg *
Oat Bran Fiber (Avena sativa) 200 mg *
Psyllium Husk Fiber (Plantago ovata) 200 mg *
Gymnema sylvestre Extract (25% gymnemic acid) (leaves) 50 mg *
L-Carnitine (from L-carnitine tartrate) 20 mg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Gelatin Safe

Forms the capsule shell that holds the supplement contents.

Calcium Palmitate Generally_safe

It is used to prevent ingredients from sticking to manufacturing equipment.

Rice Flour Safe

Natural bulking agent to fill capsule space. Hypoallergenic.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$36$35$34$33$32 Mar 12 $34.00
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
Swanson

Founded 1969 · Fargo, North Dakota, United States · 994 products · swansonvitamins.com

Certifications

6 certifications
Consumerlab Verified
Nsf Gmp Verified Source
Fda Gmp Inspections Verified Source
Npa Gmp Verified Source
Usda Organic Verified Source
Vegan Certified Verified Source

Transparency

4 claims
Third Party Testing Claim — Verified Source
Coa Availability — Claimed Source
In House Testing — Verified Source

Violation History

6 incidents
Recall Vitamin B12 Methylcobalamin High Absorption2022-03-04Source
Lawsuit Website not accessible to blind individuals, violating the Americans with Disabilities Act (ADA).2019Source
Prop 65 Lead2015-11-03Source
Recall Swanson Premium Brand Full Spectrum Cilantro (Coriander)2014-04-04Source
Recall Swanson Organic Celery Seed (Whole)2011-12-16Source
Fda Warning Products contained an unauthorized drug (lovastatin) and were marketed with claims to treat high cholesterol, rendering them unapproved new drugs.2007-08-08Source
Related Supplements
Frequently Asked Questions
Is Swanson Glucomannan+, 300 Capsules a good supplement?

Swanson Glucomannan+, 300 Capsules received a product quality score of 69/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 12 active ingredients with 150 servings per container. Of the 4 inactive ingredients, 3 are rated safe and 0 are flagged for review. The manufacturer, Swanson, holds a brand trust score of 90/100 with 6 verified certifications including Consumerlab, Nsf Gmp, Fda Gmp Inspections, Npa Gmp.

What are the ingredients in Swanson Glucomannan+, 300 Capsules?

Swanson Glucomannan+, 300 Capsules contains 12 active ingredients: Calories (5), Total Carbohydrates (1 g), Dietary Fiber (1 g), Chromium (from Chromax® Chromium Picolinate) (100 mcg), Konjac Glucomannan (Amorphophallus konjac) (tuber) (300 mg), Apple Pectin (200 mg), and 6 more. Notable high-dose ingredients include Chromium at 285% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Swanson Glucomannan+, 300 Capsules safe to take?

Swanson Glucomannan+, 300 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.

Is Swanson a trustworthy supplement brand?

Swanson receives a brand trust score of 90/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1969 and headquartered in Fargo, North Dakota, United States, the company offers 994 products in their lineup. They hold 6 verified certifications including Consumerlab, Nsf Gmp, Fda Gmp Inspections, Npa Gmp. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Swanson has 6 historical regulatory incidents on record, which are factored into the trust score.

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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.