Jarrow Formulas Methyl B-12 1000 mcg
Brand: Jarrow Formulas · Form: LOZENGE [E0174]
Our assessment
The evidence shows that the key ingredient in Jarrow Formulas Methyl B-12 1000 mcg is vitamin B12, not calcium. However, the data provided is for calcium, not B12. Based on the available data, we cannot assess the specific benefits of methyl B12. What we can report is that the ingredient calcium supports bone mineralization and neuromuscular relaxation [NIH ODS]. For B12-specific information, data is not available in the provided materials.
How it works
Think of calcium as a structural builder for your bones and a signal regulator for your nerves. It supports bone density and mineral deposition, and it helps your muscles relax and nerves signal properly [NIH ODS]. This mechanism is distinct from how B12 works in the body, but it is the only mechanism data provided for this product's listed ingredient.
Safety profile
FDA received 592,059 total adverse event reports for this product category. For calcium specifically, high intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. High levels of calcium in the blood and urine can cause 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].
Our recommendation
Data not available for B12-specific dosing or recommendations. For calcium, you should be aware that it can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Because the provided data does not cover methyl B12, we cannot make a confident recommendation for this specific product. Consult your healthcare provider for guidance on B12 supplementation.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Jarrow Formulas |
|---|---|
| Serving Size | |
| Contents | 100.0 Lozenge(s) 1000.0 mcg |
| Market Status | Off 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