Source Naturals Liver Guard™, Silymarin, CoQ10, N-Acetyl Cysteine Complex, 60 Tablets supplement bottle
Source Naturals

Liver Guard™, Silymarin, CoQ10, N-Acetyl Cysteine Complex, 60 Tablets

What We Researched
30 active ingredients analyzed · 5 inactive ingredients decoded · 1 brand certification checked · 2 retailers compared · Last updated: Mar 2026
79
Product Score Fair
66
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Total Carbohydrates 1 g <1%*
Vitamin C (as ascorbyl palmitate, ascorbic acid, & zinc ascorbate) 250 mg 278%
Vitamin E (as d-alpha tocopheryl succinate) (100 IU) 67 mg 447%
Thiamin (vitamin B-1) 8 mg 667%
Riboflavin (vitamin B-2) 8 mg 615%
Niacin (as niacin 25 mg & niacinamide 25 mg) 50 mg 313%
Vitamin B-6 (as pyridoxine HCI) 10 mg 588%
Folate (as folic acid and calcium folinate) (300 mcg folic acid) 680 mcg DFE 170%
Vitamin B-12 (as cyanocobalamin) 50 mcg 2,083%
Pantothenic Acid (as calcium D-pantothenate) 14 mg 280%
Choline (as bitartrate) 50 mg 9%
Calcium (as calcium D-glucarate, dibasic calcium phosphate & calcium D-pantothenate) 32 mg 2%
Magnesium (as magnesium oxide & amino acid complex) 50 mg 12%
Zinc (as zinc methionine sulfate complex [OptiZinc®] & ascorbate) 15 mg 136%
Selenium (as L-selenomethionine) 50 mcg 91%
Potassium (as potassium citrate) 48 mg 1%
N-Acetyl L-Cysteine 350 mg
Silymarin (from milk thistle seed extract) 250 mg
Dandelion Whole Plant/Root Extract 175 mg
Turmeric Rhizome Extract 150 mg
alpha-Lipoic Acid 150 mg
Bupleurum Root Extract 100 mg
gamma-Vitamin E Complex 100 mg
Calcium D-Glucarate 100 mg
Oregon Grape Root 75 mg
Artichoke Aerial Parts Ext. Standardized to 5% Cynarins 75 mg
Inositol 50 mg
Coenzyme Q10 12 mg
Bioavailability Good

Absorption Rating

  • Total Carbohydrates Fair
  • Vitamin C (as ascorbyl palmitate, ascorbic acid, & zinc ascorbate) Fair
  • Vitamin E (as d-alpha tocopheryl succinate) (100 IU) Good
  • Thiamin (vitamin B-1) Good
  • Riboflavin (vitamin B-2) Good
  • Niacin (as niacin 25 mg & niacinamide 25 mg) Good
  • Vitamin B-6 (as pyridoxine HCI) Fair
  • Folate (as folic acid and calcium folinate) (300 mcg folic acid) Good
  • Vitamin B-12 (as cyanocobalamin) Fair
  • Pantothenic Acid (as calcium D-pantothenate) Good
  • Choline (as bitartrate) Poor
  • Calcium (as calcium D-glucarate, dibasic calcium phosphate & calcium D-pantothenate) Fair
  • Magnesium (as magnesium oxide & amino acid complex) Poor
  • Zinc (as zinc methionine sulfate complex [OptiZinc®] & ascorbate) Fair
  • Selenium (as L-selenomethionine) Good
  • Potassium (as potassium citrate) Good
  • N-Acetyl L-Cysteine Good
  • Silymarin (from milk thistle seed extract) Good
  • Dandelion Whole Plant/Root Extract Fair
  • Turmeric Rhizome Extract Poor
  • alpha-Lipoic Acid Fair
  • Bupleurum Root Extract Fair
  • gamma-Vitamin E Complex Good
  • Calcium D-Glucarate Good
  • Oregon Grape Root Poor
  • Artichoke Aerial Parts Ext. Standardized to 5% Cynarins Fair
  • Inositol Good
  • Coenzyme Q10 Good
Other Ingredients Excellent

Fillers & Additives

  • Silicified Microcrystalline Cellulose
  • Stearic Acid
  • Modified Cellulose Gum
  • Dibasic Calcium Phosphate
  • Silica
Efficacy Fair

Dosage Analysis

  • Vitamin C (as ascorbyl palmitate, ascorbic acid, & zinc ascorbate) 250 mg Effective
  • Vitamin E (as d-alpha tocopheryl succinate) (100 IU) 67 mg Effective
  • Thiamin (vitamin B-1) 8 mg Effective
  • Riboflavin (vitamin B-2) 8 mg Effective
  • Niacin (as niacin 25 mg & niacinamide 25 mg) 50 mg High
  • Vitamin B-6 (as pyridoxine HCI) 10 mg Effective
  • Folate (as folic acid and calcium folinate) (300 mcg folic acid) 680 mcg DFE Effective
  • Vitamin B-12 (as cyanocobalamin) 50 mcg Effective
  • Pantothenic Acid (as calcium D-pantothenate) 14 mg Effective
  • Choline (as bitartrate) 50 mg Under-dosed
  • Calcium (as calcium D-glucarate, dibasic calcium phosphate & calcium D-pantothenate) 32 mg Under-dosed
  • Magnesium (as magnesium oxide & amino acid complex) 50 mg Under-dosed
  • Zinc (as zinc methionine sulfate complex [OptiZinc®] & ascorbate) 15 mg Effective
  • Selenium (as L-selenomethionine) 50 mcg Effective
  • Potassium (as potassium citrate) 48 mg Under-dosed
  • N-Acetyl L-Cysteine 350 mg Under-dosed
  • Silymarin (from milk thistle seed extract) 250 mg Effective
  • Dandelion Whole Plant/Root Extract 175 mg Under-dosed
  • Turmeric Rhizome Extract 150 mg Under-dosed
  • alpha-Lipoic Acid 150 mg Under-dosed
  • gamma-Vitamin E Complex 100 mg Effective
  • Calcium D-Glucarate 100 mg Under-dosed
  • Oregon Grape Root 75 mg Under-dosed
  • Artichoke Aerial Parts Ext. Standardized to 5% Cynarins 75 mg Under-dosed
  • Inositol 50 mg Under-dosed
  • Coenzyme Q10 12 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Calories 10
Total Carbohydrates 1 g <1%*
Vitamin C (as ascorbyl palmitate, ascorbic acid, & zinc ascorbate) 250 mg 278%
Vitamin E (as d-alpha tocopheryl succinate) (100 IU) 67 mg 447%
Thiamin (vitamin B-1) 8 mg 667%
Riboflavin (vitamin B-2) 8 mg 615%
Niacin (as niacin 25 mg & niacinamide 25 mg) 50 mg 313%
Vitamin B-6 (as pyridoxine HCI) 10 mg 588%
Folate (as folic acid and calcium folinate) (300 mcg folic acid) 680 mcg DFE 170%
Vitamin B-12 (as cyanocobalamin) 50 mcg 2,083%
Pantothenic Acid (as calcium D-pantothenate) 14 mg 280%
Choline (as bitartrate) 50 mg 9%
Calcium (as calcium D-glucarate, dibasic calcium phosphate & calcium D-pantothenate) 32 mg 2%
Magnesium (as magnesium oxide & amino acid complex) 50 mg 12%
Zinc (as zinc methionine sulfate complex [OptiZinc®] & ascorbate) 15 mg 136%
Selenium (as L-selenomethionine) 50 mcg 91%
Sodium 5 mg <1%
Potassium (as potassium citrate) 48 mg 1%
N-Acetyl L-Cysteine 350 mg
Silymarin (from milk thistle seed extract) 250 mg
Dandelion Whole Plant/Root Extract 175 mg
Turmeric Rhizome Extract 150 mg
alpha-Lipoic Acid 150 mg
Bupleurum Root Extract 100 mg
gamma-Vitamin E Complex 100 mg
Calcium D-Glucarate 100 mg
Oregon Grape Root 75 mg
Artichoke Aerial Parts Ext. Standardized to 5% Cynarins 75 mg
Inositol 50 mg
Coenzyme Q10 12 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Silicified Microcrystalline Cellulose Generally_safe

It is used as a filler and flow agent in supplements.

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.

Dibasic Calcium Phosphate Generally_safe

It is used as a filler and to improve tablet hardness.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$27$26$25$24$23 Mar 12 $25.00
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
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 Liver Guard™, Silymarin a good supplement?

Source Naturals Liver Guard™, Silymarin, CoQ10, N-Acetyl Cysteine Complex, 60 Tablets received a product quality score of 79/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 30 active ingredients with 30 servings per container. Of the 5 inactive ingredients, 2 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 Liver Guard™, Silymarin?

Source Naturals Liver Guard™, Silymarin contains 30 active ingredients: Calories (10), Total Carbohydrates (1 g), Vitamin C (as ascorbyl palmitate, ascorbic acid, & zinc ascorbate) (250 mg), Vitamin E (as d-alpha tocopheryl succinate) (100 IU) (67 mg), Thiamin (vitamin B-1) (8 mg), Riboflavin (vitamin B-2) (8 mg), and 24 more. Notable high-dose ingredients include Vitamin C at 278% DV, Vitamin E at 447% DV, Thiamin at 667% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Source Naturals Liver Guard™, Silymarin safe to take?

Source Naturals Liver Guard™, Silymarin, CoQ10, N-Acetyl Cysteine Complex, 60 Tablets 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.

What is coq10?

Coq10 is a topic many supplement consumers ask about. In the context of dietary supplements, understanding coq10 helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 250,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

What is coq10 good for?

Coq10 Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding coq10 good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 250,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

How much coq10 should i take?

The optimal dosage depends on your individual health needs, age, sex, and current nutrient levels. Recommended daily amounts are established by health authorities but may vary from therapeutic doses used in clinical research. It's important to check the Supplement Facts label for the exact amount per serving and compare it against the % Daily Value. Some supplements provide mega-doses well above the Daily Value, which may not be necessary and in some cases could be harmful — particularly for fat-soluble vitamins (A, D, E, K) that accumulate in the body. GoodSupp's efficacy analysis evaluates whether a product's dosages align with clinically studied amounts. Always consult your healthcare provider for personalized dosage recommendations.

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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.