Sundown Naturals Dissolvable B12 5000 mcg Cherry Flavored
Brand: Sundown Naturals · Form: LOZENGE [E0174]
Our assessment
Our assessment: For most individuals, a 5000 mcg B12 supplement like this is not necessary. The evidence shows that your body only absorbs a small fraction of very high doses, and the RDA for most adults is only 2.4 mcg per day [NIH ODS]. Unless you have a diagnosed deficiency or absorption issue, this level of supplementation is likely providing no extra benefit.
How it works
Vitamin B12 is essential for nerve tissue health, brain function, and the production of red blood cells [NIH ODS]. This particular product uses a dissolvable, cherry-flavored tablet, which can be a convenient option if you have trouble swallowing pills or need a form that absorbs under your tongue. However, the key ingredient in this product is calcium, not B12. Data not available for the specific B12 mechanism in this product. For calcium, think of it as a structural support for your bones and a regulator for muscle and nerve signaling [NIH ODS].
Safety profile
The FDA received 592,059 total adverse event reports for all supplements. For calcium specifically, very high intake can cause poor muscle tone, constipation, nausea, weight loss, extreme tiredness, and abnormal heart rhythms [NIH ODS]. Data not available for side effect reports specific to this Sundown Naturals product. You should be aware that calcium can reduce the absorption of several medications, including thyroid medication (levothyroxine) and some antibiotics [NIH ODS].
Our recommendation
Our recommendation: Start by checking your actual B12 levels with a blood test before taking 5000 mcg daily. For most people, a standard multivitamin with 2.4 mcg of B12 is sufficient [NIH ODS]. If you do need a supplement, consider a lower dose. Always take calcium supplements separately from thyroid medication or antibiotics by at least 2 hours to avoid interactions [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Sundown Naturals |
|---|---|
| Serving Size | |
| Contents | 90.0 Microlozenge(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