Rugby Vitamin B-12 100 mcg Energy, Nerve Function & Metabolism Support supplement bottle
Rugby

Vitamin B-12 100 mcg Energy, Nerve Function & Metabolism Support

What We Researched
7 active ingredients analyzed · 16 inactive ingredients decoded · 1 retailer compared · Last updated: Mar 2026
57
Product Score Poor

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Thiamin (as Thiamin Mononitrate) 3.0 mg 250%
Riboflavin 2.0 mg 154%
Niacin (as Niacinamide) 20.0 mg 125%
Vitamin B6 (as Pyridoxine HCl) 1.0 mg 59%
Vitamin B12 (as Cyanocobalamin) 5.0 mcg 208%
Pantothenic Acid (as Calcium Pantothenate) 0.1 mg 2%
Calcium (as Calcium Carbonate) 37.0 mg 3%
Bioavailability Good

Absorption Rating

  • Thiamin (as Thiamin Mononitrate) Fair
  • Riboflavin Good
  • Niacin (as Niacinamide) Good
  • Vitamin B6 (as Pyridoxine HCl) Fair
  • Vitamin B12 (as Cyanocobalamin) Fair
  • Pantothenic Acid (as Calcium Pantothenate) Good
  • Calcium (as Calcium Carbonate) Fair
Other Ingredients Very Poor

Fillers & Additives

  • Microcrystalline Cellulose
  • Croscarmellose Sodium
  • Dicalcium Phosphate
  • Silicon Dioxide
  • Stearic Acid
  • Hypromellose
  • Magnesium Stearate
  • Acacia
  • Maltodextrin
  • FD&C Yellow #6 Lake Low
  • Titanium Dioxide High
  • Triacetin
  • Mineral Oil Medium
  • FD&C Red #40 Lake High
  • Fd&c Blue #1 Lake High
  • Talc High
Efficacy Fair

Dosage Analysis

  • Thiamin (as Thiamin Mononitrate) 3.0 mg Effective
  • Riboflavin 2.0 mg Effective
  • Niacin (as Niacinamide) 20.0 mg Effective
  • Vitamin B6 (as Pyridoxine HCl) 1.0 mg Under-dosed
  • Vitamin B12 (as Cyanocobalamin) 5.0 mcg Effective
  • Pantothenic Acid (as Calcium Pantothenate) 0.1 mg Under-dosed
  • Calcium (as Calcium Carbonate) 37.0 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Thiamin (as Thiamin Mononitrate) 3.0 mg 250%
Riboflavin 2.0 mg 154%
Niacin (as Niacinamide) 20.0 mg 125%
Vitamin B6 (as Pyridoxine HCl) 1.0 mg 59%
Vitamin B12 (as Cyanocobalamin) 5.0 mcg 208%
Pantothenic Acid (as Calcium Pantothenate) 0.1 mg 2%
Calcium (as Calcium Carbonate) 37.0 mg 3%

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Microcrystalline Cellulose Safe

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

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Dicalcium Phosphate Safe

Serves as both a filler and a supplemental source of calcium and phosphorus.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Hypromellose Safe

Forms vegetarian capsule shells. Dissolves easily in the stomach.

Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Acacia Generally_safe

It is used as a binder or thickener.

Maltodextrin Generally_safe

Helps carry and stabilize active ingredients. Provides bulk.

FD&C Yellow #6 Lake Caution

It is used to add a yellow color to supplements.

Titanium Dioxide Caution

Used as a whitening agent in tablet coatings and capsules.

Triacetin Generally_safe

It is used as a solvent or humectant.

Mineral Oil Caution

It is used as a lubricant or emollient.

FD&C Red #40 Lake Generally_safe

It is used to give the supplement a red color.

Fd&c Blue #1 Lake Unknown
Talc Avoid

It is used to improve powder flow and prevent clumping.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$10$9$8$7$6 $8.34
Target

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

Brand Trust Report
Rugby

Founded 1961 · Livonia, Michigan, USA · 135 products · majorrugby.com/

Transparency

1 claim

Violation History

4 incidents
Recall All liquid products manufactured by PharmaTech LLC and distributed by Rugby Laboratories2017-08-10Source
Recall Rugby Natural Iron Supplement tablets2013-01-17Source
Recall Rugby Children's Pain & Fever Concentrated Drops (Acetaminophen Drops)2011-07-21Source
Lawsuit Failure to have an effective system to identify and report suspicious orders of controlled substances.2011Source
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Frequently Asked Questions
Is Rugby Vitamin B-12 100 mcg Energy, Nerve Function & Metabolism Support a good supplement?

Rugby Vitamin B-12 100 mcg Energy, Nerve Function & Metabolism Support received a product quality score of 57/100 in GoodSupp's independent analysis, indicating several areas of concern that consumers should review. The product contains 7 active ingredients with 100 servings per container. Of the 16 inactive ingredients, 7 are rated safe and 3 are flagged for review.

What are the ingredients in Rugby Vitamin B-12 100 mcg Energy, Nerve Function & Metabolism Support?

Rugby Vitamin B-12 100 mcg Energy, Nerve Function & Metabolism Support contains 7 active ingredients: Thiamin (as Thiamin Mononitrate) (3.0 mg), Riboflavin (2.0 mg), Niacin (as Niacinamide) (20.0 mg), Vitamin B6 (as Pyridoxine HCl) (1.0 mg), Vitamin B12 (as Cyanocobalamin) (5.0 mcg), Pantothenic Acid (as Calcium Pantothenate) (0.1 mg), and 1 more. Notable high-dose ingredients include Thiamin at 250% DV, Vitamin B12 at 208% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Rugby Vitamin B-12 100 mcg Energy, Nerve Function & Metabolism Support safe to take?

Rugby Vitamin B-12 100 mcg Energy, Nerve Function & Metabolism Support has been analyzed for ingredient safety across all its components. Of 16 inactive ingredients, 7 are rated safe. 3 ingredients are flagged for review: FD&C Yellow #6 Lake, Titanium Dioxide, Mineral Oil. 'Caution' doesn't mean dangerous — it indicates the ingredient has some considerations worth being aware of, such as potential sensitivities or ongoing research. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

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 250,000 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. 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.