Sundown Sublingual Liquid B Complex supplement bottle
Sundown

Sublingual Liquid B Complex Review

What We Researched
5 active ingredients analyzed · 3 inactive ingredients decoded · 3 brand certifications checked · Last updated: Aug 2026
93
Product Score Excellent
81
Brand Score Good

Two independent scores — the product and the brand behind it, never blended into one number. See our methodology.

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Riboflavin (as Riboflavin 5'-Phosphate Sodium) 1.7 mg 131%
Niacin (as Niacinamide) 20 mg 125%
Vitamin B6 (as Pyridoxine Hydrochloride) 2 mg 118%
Vitamin B12 (as Cyanocobalamin) 1200 mcg 50000%
Pantothenic Acid (as Dexpanthenol) 30 mg 600%
Bioavailability Very Good

Absorption Rating

  • Riboflavin (as Riboflavin 5'-Phosphate Sodium) Good
  • Niacin (as Niacinamide) Good
  • Vitamin B6 (as Pyridoxine Hydrochloride) Fair
  • Vitamin B12 (as Cyanocobalamin) Fair
  • Pantothenic Acid (as Dexpanthenol) Good
Other Ingredients Excellent

Fillers & Additives

  • Purified Water
  • Sorbitol Solution
  • Vegetable Glycerin
Efficacy Excellent

Dosage Analysis

  • Riboflavin (as Riboflavin 5'-Phosphate Sodium) 1.7 mg Effective
  • Niacin (as Niacinamide) 20 mg Effective
  • Vitamin B6 (as Pyridoxine Hydrochloride) 2 mg Effective
  • Vitamin B12 (as Cyanocobalamin) 1200 mcg High
  • Pantothenic Acid (as Dexpanthenol) 30 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Riboflavin (as Riboflavin 5'-Phosphate Sodium) 1.7 mg 131%
Niacin (as Niacinamide) 20 mg 125%
Vitamin B6 (as Pyridoxine Hydrochloride) 2 mg 118%
Vitamin B12 (as Cyanocobalamin) 1200 mcg 50000%
Pantothenic Acid (as Dexpanthenol) 30 mg 600%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Purified Water Safe

Dissolves and carries water-soluble ingredients.

Sorbitol Solution Unknown
Vegetable Glycerin Safe

Helps form softgel capsule shells and acts as a humectant.

Brand Trust Report
Sundown

Founded 1977 · Bridgewater, NJ, USA · 359 products · sundownnutrition.com/

Certifications

3 certifications
Consumerlab Verified Source
Nsf Gmp Verified Source
Usda Organic Verified Source

Transparency

3 claims
Third Party Testing Claim — Claimed Source
In House Testing — Claimed Source

Violation History

9 incidents
Lawsuit FTC charges of 'review hijacking' on Amazon to mislead consumers.2023Source
Lawsuit Deceptive 'review hijacking' on Amazon to mislead consumers about product ratings and popularity.2023Source
Lawsuit The Bountiful Company, including Sundown Naturals, engaged in 'review hijacking' on Amazon.com to deceive consumers.2023Source
Lawsuit Deceptive labeling of 'Complete' multivitamins that were missing essential B vitamins.2021Source
Lawsuit A class-action lawsuit was filed against Rexall Sundown, Inc., NatureSmart, LLC, and The Bountiful Company for misrepresenting 'Complete' multivitamin gummies that lacked all essential B vitamins.2021Source
Lawsuit Rexall Sundown, Inc. faced a class-action lawsuit for allegedly mislabeling joint health products.2017Source
Recall Rexall Calcium 1200 mg plus 1000IU Vitamin D3, 60 softgels2012-01-16Source
Lawsuit The FTC charged Rexall Sundown, Inc. with making misleading claims about its Cellasene product.2003Source
Lawsuit False and unsubstantiated claims for the 'Cellasene' supplement.2000Source
Related Supplements
Frequently Asked Questions
Is Sundown Sublingual Liquid B Complex a good supplement?

Sundown Sublingual Liquid B Complex received a product quality score of 93/100 in GoodSupp's independent analysis, placing it in the top tier of supplements we've analyzed. The product contains 5 active ingredients with 59 servings per container. Of the 3 inactive ingredients, 2 are rated safe and 0 are flagged for review. The manufacturer, Sundown, holds a brand trust score of 81/100 with 3 verified certifications including Consumerlab, Nsf Gmp, Usda Organic.

What are the ingredients in Sundown Sublingual Liquid B Complex?

Sundown Sublingual Liquid B Complex contains 5 active ingredients: Riboflavin (as Riboflavin 5'-Phosphate Sodium) (1.7 mg), Niacin (as Niacinamide) (20 mg), Vitamin B6 (as Pyridoxine Hydrochloride) (2 mg), Vitamin B12 (as Cyanocobalamin) (1200 mcg), Pantothenic Acid (as Dexpanthenol) (30 mg). Notable high-dose ingredients include Vitamin B12 at 50000% DV, Pantothenic Acid at 600% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Sundown Sublingual Liquid B Complex safe to take?

Sundown Sublingual Liquid B Complex 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 Sundown a trustworthy supplement brand?

Sundown receives a brand trust score of 81/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1977 and headquartered in Bridgewater, NJ, USA, the company offers 359 products in their lineup. They hold 3 verified certifications including Consumerlab, Nsf Gmp, Usda Organic. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Sundown has 9 historical regulatory incidents on record, which are factored into the trust score.

How much vitamin d3 should i take daily?

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.

What does vitamin d do?

This is an important question for supplement consumers. The dietary supplement industry is largely self-regulated, which means product quality, ingredient transparency, and safety practices vary significantly between brands and products. The most reliable way to evaluate any supplement is to check for third-party testing certifications, review the full ingredient list and dosages, and research the brand's regulatory track record. GoodSupp's database of over 150,000 analyzed products provides independent quality scores, ingredient safety ratings, and brand trust reports to help you make evidence-based decisions.

How much vitamin d3 per day for a woman?

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 — read our methodology. 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.