Jarrow Formulas Methyl B-12 Cherry Flavor 5000 mcg
Brand: Jarrow Formulas · Form: LOZENGE [E0174]
Our assessment
The evidence shows that this product is a high-dose vitamin B12 supplement. Our assessment is that for individuals with a confirmed B12 deficiency or absorption issues, 5000 mcg can be an effective dose. However, for most people without a diagnosed deficiency, this level is far above the daily requirement and likely unnecessary. Data on the specific cherry-flavored lozenge from Jarrow Formulas is not available beyond the listed ingredients.
How it works
Vitamin B12 is a master regulator of your nervous system and red blood cell formation. It works by supporting the myelin sheath that protects your nerves and by helping your body convert food into energy. The methylcobalamin form in this product is the active, coenzyme form, which your body can use directly without needing to convert it from other forms like cyanocobalamin. For calcium, a separate ingredient listed in the data, its mechanism involves bone mineralization and neuromuscular relaxation [NIH ODS].
Safety profile
FDA received a total of 592,059 adverse event reports across all supplement categories, but specific side-effect counts for this exact product are not available. Regarding the ingredient calcium, high intakes might increase the risk of heart disease and prostate cancer. 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]. Calcium can also reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Our recommendation is to only use this 5000 mcg dose if you have a known B12 deficiency or a condition that impairs absorption, such as pernicious anemia or after gastric bypass surgery. For general wellness, a standard multivitamin with 2.4 mcg of B12 is typically sufficient. If you take calcium supplements, be aware of the potential interactions with medications and take them separately [NIH ODS]. Always consult your doctor before starting a high-dose supplement regimen.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Jarrow Formulas |
|---|---|
| Serving Size | |
| Contents | 5000.0 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