Jamieson Vitamin B-12 1000 mcg supplement bottle
Jamieson

Vitamin B-12 1000 mcg

What We Researched
1 active ingredient analyzed · 10 inactive ingredients decoded · Last updated: Mar 2026
87
Product Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin B-12 1000 mcg
Bioavailability Fair

Absorption Rating

  • Vitamin B-12 Fair
Other Ingredients Excellent

Fillers & Additives

  • Mannitol
  • Cellulose
  • Xylitol
  • Crospovidone
  • Dicalcium Phosphate
  • Dextrose
  • Vegetable Stearic Acid
  • Vegetable Magnesium Stearate
  • Calcium Carbonate
  • Silica
Efficacy Excellent

Dosage Analysis

  • Vitamin B-12 1000 mcg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin B-12 1000 mcg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Mannitol Generally_safe

It is used as a sweetener, filler, and flow agent.

Cellulose Safe

Provides bulk and structure in tablets and capsules.

Xylitol Safe

Provides sweetness with reduced calorie content. Does not promote tooth decay.

Crospovidone Generally_safe

It is used as a binder to help tablets or capsules disintegrate.

Dicalcium Phosphate Safe

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

Dextrose Generally_safe

It is used as a filler, sweetener, or to improve the flow of powders.

Vegetable Stearic Acid Generally_safe

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

Vegetable Magnesium Stearate Safe

Prevents ingredients from sticking to equipment. Derived from vegetable sources.

Calcium Carbonate Safe

Acts as a filler and provides supplemental calcium.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

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Frequently Asked Questions
Is Jamieson Vitamin B-12 1000 mcg a good supplement?

Jamieson Vitamin B-12 1000 mcg received a product quality score of 87/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 1 active ingredients Of the 10 inactive ingredients, 6 are rated safe and 0 are flagged for review.

What are the ingredients in Jamieson Vitamin B-12 1000 mcg?

Jamieson Vitamin B-12 1000 mcg contains 1 active ingredients: Vitamin B-12 (1000 mcg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Jamieson Vitamin B-12 1000 mcg safe to take?

Jamieson Vitamin B-12 1000 mcg 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.

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.