Sundown Naturals B12 Gummies 500 mcg
Brand: Sundown Naturals · Form: GUMMY [E0176]
Our assessment
The evidence shows that Sundown Naturals B12 Gummies provide 500 mcg of vitamin B12 per serving, but we must be clear: the primary ingredient in the data provided is calcium, not vitamin B12. For calcium, the data confirms that it plays a key role in bone mineralization and neuromuscular relaxation [NIH ODS]. However, high calcium intakes might increase the risk of heart disease and prostate cancer, and high levels in the blood can cause poor muscle tone, kidney function issues, constipation, nausea, weight loss, extreme tiredness, and abnormal heart rhythms [NIH ODS]. For B12-specific benefits, data is not available in the provided materials.
How it works
Think of calcium as a structural and signaling mineral — it supports bone density and mineral deposition, and helps your muscles relax and nerves signal properly [NIH ODS]. For the B12 in these gummies, specific mechanisms are not covered in the data provided. You should know that calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. If you take any of these, you may need to separate your supplement intake by several hours.
Safety profile
FDA received a total of 592,059 adverse event reports across all supplements in the database, but specific report counts for Sundown Naturals B12 Gummies are not available [FDA data]. For calcium specifically, side effects at high levels include poor muscle tone, poor kidney function, low phosphate levels, constipation, nausea, weight loss, extreme tiredness, frequent need to urinate, and abnormal heart rhythms [NIH ODS]. Some research suggests that high calcium intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. Data on side effects specific to vitamin B12 in this product is not available.
Our recommendation
Start by verifying your actual need for B12 and calcium through a blood test. For calcium, follow the RDA and avoid high doses due to potential risks [NIH ODS]. If you take medications like levothyroxine or certain antibiotics, take this supplement at least two hours apart from those drugs [NIH ODS]. Since specific data on B12 in this product is not available, we cannot confirm its efficacy for energy or nerve health based on the provided information. Choose a supplement with transparent B12 clinical data if that is your primary goal.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Sundown Naturals |
|---|---|
| Serving Size | |
| Contents | 50.0 Gummie(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