Source Naturals Fibro-Response supplement bottle
Source Naturals

Fibro-Response

What We Researched
38 active ingredients analyzed · 5 inactive ingredients decoded · 1 brand certification checked · 1 retailer compared · Last updated: Mar 2026
76
Product Score Fair
66
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Total Carbohydrates 2 g 1%
Vitamin A (as Beta-Carotene) 5000 IU 100%
Vitamin C (as Ascorbic Acid) 50 mg 83%
Vitamin D3 (as Cholecalciferol) 200 IU 50%
Thiamine (as Vitamin B1) 30 mg 2000%
Riboflavin (as Vitamin B2) 30 mg 1764%
Blend 50 mg 250%
Vitamin B6 (as Pyridoxine Hydrochloride) 40 mg 2000%
Folate (as Folic Acid) 200 mcg 50%
Pantothenic Acid (as Calcium D-Pantothenate) 50 mg 500%
Magnesium (as Magnesium Malate, Magnesium Oxide) 300 mg 75%
Zinc (as Zinc Citrate, Zinc Methionine Sulfate Complex) 15 mg 100%
Selenium (as L-Selenomethionine, Sodium Selenite) 100 mcg 143%
Copper (as Copper Sebacic Acid Complex) 1 mg 50%
Manganese (as Manganese Citrate) 12 mg 600%
Chromium (as Chromium Polynicotinate) 100 mcg 83%
Molybdenum (as Molybdenum Amino Acid Complex) 90 mcg 120%
Malic Acid (as Magnesium Malate, Malic Acid) 1.2 g
MSM 1.12 g
Hops cone extract 200 mg
GABA 150 mg
N-Acetyl Cysteine 75 mg
Dandelion whole plant/root extract 75 mg
Silymarin (as Milk Thistle seed extract) 70 mg
Ginkgo leaf ext. (as Flavone Glycosides, Terpene Lactones) 60 mg
Alpha-Lipoic Acid 50 mg
Ginger 30 mg
Bupleurum root extract 30 mg
Asian Ginseng root extract 25 mg
Kudzu Root Extract 15 mg
Astragalus root extract 15 mg
Skullcap 15 mg
Cassia 15 mg
Coenzyme Q10 (as Ubiquinone) 15 mg
Licorice root extract 10 mg
Black Pepper fruit extract 3 mg
Bioavailability Good

Absorption Rating

  • Total Carbohydrates Fair
  • Vitamin A (as Beta-Carotene) Fair
  • Vitamin C (as Ascorbic Acid) Fair
  • Vitamin D3 (as Cholecalciferol) Good
  • Thiamine (as Vitamin B1) Good
  • Riboflavin (as Vitamin B2) Good
  • Vitamin B6 (as Pyridoxine Hydrochloride) Fair
  • Folate (as Folic Acid) Fair
  • Pantothenic Acid (as Calcium D-Pantothenate) Good
  • Magnesium (as Magnesium Malate, Magnesium Oxide) Good
  • Zinc (as Zinc Citrate, Zinc Methionine Sulfate Complex) Good
  • Selenium (as L-Selenomethionine, Sodium Selenite) Good
  • Copper (as Copper Sebacic Acid Complex) Fair
  • Manganese (as Manganese Citrate) Good
  • Chromium (as Chromium Polynicotinate) Good
  • Molybdenum (as Molybdenum Amino Acid Complex) Good
  • Malic Acid (as Magnesium Malate, Malic Acid) Fair
  • MSM Good
  • Hops cone extract Good
  • GABA Poor
  • N-Acetyl Cysteine Good
  • Dandelion whole plant/root extract Fair
  • Silymarin (as Milk Thistle seed extract) Good
  • Ginkgo leaf ext. (as Flavone Glycosides, Terpene Lactones) Poor
  • Alpha-Lipoic Acid Fair
  • Ginger Good
  • Bupleurum root extract Fair
  • Asian Ginseng root extract Good
  • Kudzu Root Extract Fair
  • Astragalus root extract Poor
  • Skullcap Poor
  • Cassia Poor
  • Coenzyme Q10 (as Ubiquinone) Fair
  • Licorice root extract Good
  • Black Pepper fruit extract Good
Other Ingredients Excellent

Fillers & Additives

  • Stearic Acid
  • Modified Cellulose Gum
  • Silica
  • Magnesium Stearate
  • Acacia Gum
Efficacy Poor

Dosage Analysis

  • Vitamin A (as Beta-Carotene) 5000 IU Under-dosed
  • Vitamin C (as Ascorbic Acid) 50 mg Under-dosed
  • Vitamin D3 (as Cholecalciferol) 200 IU Under-dosed
  • Thiamine (as Vitamin B1) 30 mg Effective
  • Riboflavin (as Vitamin B2) 30 mg Effective
  • Vitamin B6 (as Pyridoxine Hydrochloride) 40 mg Effective
  • Folate (as Folic Acid) 200 mcg Under-dosed
  • Pantothenic Acid (as Calcium D-Pantothenate) 50 mg Effective
  • Magnesium (as Magnesium Malate, Magnesium Oxide) 300 mg Effective
  • Zinc (as Zinc Citrate, Zinc Methionine Sulfate Complex) 15 mg Effective
  • Selenium (as L-Selenomethionine, Sodium Selenite) 100 mcg Effective
  • Copper (as Copper Sebacic Acid Complex) 1 mg Effective
  • Manganese (as Manganese Citrate) 12 mg High
  • Chromium (as Chromium Polynicotinate) 100 mcg Effective
  • Molybdenum (as Molybdenum Amino Acid Complex) 90 mcg Effective
  • MSM 1.12 g Under-dosed
  • Hops cone extract 200 mg Effective
  • GABA 150 mg Effective
  • N-Acetyl Cysteine 75 mg Under-dosed
  • Dandelion whole plant/root extract 75 mg Under-dosed
  • Silymarin (as Milk Thistle seed extract) 70 mg Under-dosed
  • Ginkgo leaf ext. (as Flavone Glycosides, Terpene Lactones) 60 mg Under-dosed
  • Alpha-Lipoic Acid 50 mg Under-dosed
  • Ginger 30 mg Under-dosed
  • Asian Ginseng root extract 25 mg Under-dosed
  • Kudzu Root Extract 15 mg Under-dosed
  • Astragalus root extract 15 mg Under-dosed
  • Skullcap 15 mg Under-dosed
  • Cassia 15 mg Under-dosed
  • Coenzyme Q10 (as Ubiquinone) 15 mg Under-dosed
  • Licorice root extract 10 mg Under-dosed
  • Black Pepper fruit extract 3 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Calories 10 kcal
Total Carbohydrates 2 g 1%
Vitamin A (as Beta-Carotene) 5000 IU 100%
Vitamin C (as Ascorbic Acid) 50 mg 83%
Vitamin D3 (as Cholecalciferol) 200 IU 50%
Thiamine (as Vitamin B1) 30 mg 2000%
Riboflavin (as Vitamin B2) 30 mg 1764%
Blend 50 mg 250%
Vitamin B6 (as Pyridoxine Hydrochloride) 40 mg 2000%
Folate (as Folic Acid) 200 mcg 50%
Pantothenic Acid (as Calcium D-Pantothenate) 50 mg 500%
Magnesium (as Magnesium Malate, Magnesium Oxide) 300 mg 75%
Zinc (as Zinc Citrate, Zinc Methionine Sulfate Complex) 15 mg 100%
Selenium (as L-Selenomethionine, Sodium Selenite) 100 mcg 143%
Copper (as Copper Sebacic Acid Complex) 1 mg 50%
Manganese (as Manganese Citrate) 12 mg 600%
Chromium (as Chromium Polynicotinate) 100 mcg 83%
Molybdenum (as Molybdenum Amino Acid Complex) 90 mcg 120%
Sodium 10 mg 1%
Malic Acid (as Magnesium Malate, Malic Acid) 1.2 g
MSM 1.12 g
Hops cone extract 200 mg
GABA 150 mg
N-Acetyl Cysteine 75 mg
Dandelion whole plant/root extract 75 mg
Silymarin (as Milk Thistle seed extract) 70 mg
Ginkgo leaf ext. (as Flavone Glycosides, Terpene Lactones) 60 mg
Alpha-Lipoic Acid 50 mg
Ginger 30 mg
Bupleurum root extract 30 mg
Asian Ginseng root extract 25 mg
Kudzu Root Extract 15 mg
Astragalus root extract 15 mg
Skullcap 15 mg
Cassia 15 mg
Coenzyme Q10 (as Ubiquinone) 15 mg
Licorice root extract 10 mg
Black Pepper fruit extract 3 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Modified Cellulose Gum Generally_safe

It is used to improve the texture and stability of products.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Acacia Gum Safe

Binds tablet ingredients together. Also a source of soluble fiber.

Price Comparison

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

Brand Trust Report
Source Naturals

Founded 1982 · Scotts Valley, CA, USA · 837 products · sourcenaturals.com/

Certifications

1 certification
Fda Gmp Inspections Verified Source

Transparency

2 claims
Third Party Testing Claim — Claimed Source
In House Testing — Verified Source
Related Supplements
Frequently Asked Questions
Is Source Naturals Fibro-Response a good supplement?

Source Naturals Fibro-Response received a product quality score of 76/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 38 active ingredients with 15 servings per container. Of the 5 inactive ingredients, 4 are rated safe and 0 are flagged for review. The manufacturer, Source Naturals, holds a brand trust score of 66/100 with 1 verified certifications including Fda Gmp Inspections.

What are the ingredients in Source Naturals Fibro-Response?

Source Naturals Fibro-Response contains 38 active ingredients: Calories (10 kcal), Total Carbohydrates (2 g), Vitamin A (as Beta-Carotene) (5000 IU), Vitamin C (as Ascorbic Acid) (50 mg), Vitamin D3 (as Cholecalciferol) (200 IU), Thiamine (as Vitamin B1) (30 mg), and 32 more. Notable high-dose ingredients include Thiamine at 2000% DV, Riboflavin at 1764% DV, Blend at 250% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Source Naturals Fibro-Response safe to take?

Source Naturals Fibro-Response 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 Source Naturals a trustworthy supplement brand?

Source Naturals receives a brand trust score of 66/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1982 and headquartered in Scotts Valley, CA, USA, the company offers 837 products in their lineup. They hold 1 verified certifications including Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. No regulatory violations or FDA warning letters were found in our research.

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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.