Product Label

Bronson Sustained Release Vitamin B12 1000 mcg

Brand: Bronson · Form: TABLET [E0155] On Market

Our assessment

The evidence shows that the active ingredient in Bronson Sustained Release Vitamin B12 1000 mcg is calcium, based on the provided data. Our assessment: calcium is a critical mineral for bone health, but taking high doses carries notable risks. You should not exceed the recommended dietary allowance without a healthcare provider's guidance.

How it works

Think of calcium as a building block and a messenger. It supports bone density and mineral deposition, which is essential for strong bones. It also helps your muscles relax and your nerves send signals properly [NIH ODS].

Safety profile

FDA received a total of 592,059 adverse event reports for all products in the database. For calcium specifically, high intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. Side effects from high blood calcium levels include poor muscle tone, poor kidney function, low phosphate levels, constipation, nausea, weight loss, extreme tiredness, frequent need to urinate, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Calcium can also reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].

Our recommendation

We recommend you do not exceed 1,000–1,200 mg of total calcium daily from all sources (food and supplements) without medical supervision. Because this product is labeled as "Bronson Sustained Release Vitamin B12 1000 mcg," but the data provided lists calcium as the ingredient, you should verify the actual supplement facts on the label. If you are taking any medications, especially for thyroid conditions, osteoporosis, or infections, check with your pharmacist about potential interactions [NIH ODS].

AI-assisted analysis. Data sourced from NIH DSLD.

Supplement Facts

BrandBronson
Serving Size
Contents250.0 Tablet(s)
Market StatusOn Market

How to Read This Label

Supplement labels contain several key sections regulated by the FDA:

  • Serving Size — The recommended amount per dose. Always check this — some products require multiple capsules per serving.
  • Amount Per Serving — Shows the quantity of each nutrient in the product, typically in IU (International Units), mg (milligrams), or mcg (micrograms).
  • % Daily Value (%DV) — Indicates how much a nutrient in a serving contributes to a daily diet. 5% DV or less is low; 20% DV or more is high.
  • Other Ingredients — Lists inactive ingredients like fillers, binders, and capsule materials (e.g., gelatin, cellulose, magnesium stearate).
  • Suggested Use — The manufacturer's recommended directions for taking the supplement, including timing and dosage.

Source: FDA Dietary Supplement Labeling Guide

Original Label

View Full DSLD Label (PDF)

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