Doctor's Best Quick Melt Fully Active B12 1000 mcg
Brand: Doctor's Best · Form: TABLET [E0155]
Our assessment
The evidence shows that Doctor's Best Quick Melt Fully Active B12 1000 mcg is a supplement providing a high dose of vitamin B12. While the product contains calcium as an ingredient, the specific data for vitamin B12 is limited in the provided information. Our assessment is that this product is intended to support energy and nerve health, but you should be aware of the calcium content and its potential interactions.
How it works
Based on the data, the calcium in this product works through two primary mechanisms: it supports bone mineralization by helping deposit minerals into bone tissue, and it promotes neuromuscular relaxation by aiding in proper muscle relaxation and nerve signaling [NIH ODS]. For vitamin B12, specific mechanism data is not available in the provided information.
Safety profile
The FDA received a total of 592,059 adverse event reports across all supplement products, but specific report counts for this product are not available. For calcium, safety data indicates that high intakes may 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].
Our recommendation
Based on the data, we recommend you consider this product only if you need a vitamin B12 supplement. Be aware that the calcium content can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Consult your healthcare provider before starting, especially if you take any of these medications or have a history of kidney problems or heart disease. Data not available for specific vitamin B12 side effects or study citations.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Doctor's Best |
|---|---|
| Serving Size | |
| Contents | 60.0 Tablet(s) |
| 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