Sundown Naturals Super Potency Sublingual B12 6,000 mcg
Brand: Sundown Naturals · Form: TABLET [E0155]
Our assessment
The evidence shows that Sundown Naturals Super Potency Sublingual B12 6,000 mcg is a high-dose supplement. However, our assessment must note that the ingredient with data provided is calcium, not B12. For calcium, the data shows a well-established role in bone mineralization, supporting bone density and mineral deposition, as well as neuromuscular relaxation [NIH ODS].
How it works
Think of calcium as a structural builder and signaling molecule. It works by supporting bone density and mineral deposition, which keeps your skeleton strong. It also plays a key role in neuromuscular relaxation, helping your muscles relax and your nerves send signals properly [NIH ODS]. For the specific B12 product you asked about, data on its mechanism is not available.
Safety profile
FDA received 592,059 total adverse event reports across all supplements, though data specific to this B12 product is not available. For calcium, which is a different ingredient, safety data shows that high intakes might increase the risk of heart disease and prostate cancer. High levels 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 absorption of medications including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Data not available for this specific B12 product. General guidance: always check the label for the active ingredient. For calcium, which has supporting data, you should be cautious with high intakes due to potential side effects and medication interactions [NIH ODS]. Consult your healthcare provider before starting any new supplement.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Sundown Naturals |
|---|---|
| Serving Size | |
| Contents | 30.0 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