Nordic Naturals Nordic Vitamin D3
Brand: Nordic Naturals · Form: SOFTGEL CAPSULE [E0161]
Our assessment
The evidence shows that calcium supplements, such as those found in Nordic Vitamin D3 products, are primarily used to support bone health. However, for this specific product, the data on vitamin D content is listed as "See label," meaning the exact dosage is not provided in the available data. Our assessment is that you should prioritize calcium from dietary sources, as the data on supplementation carries notable risks.
How it works
Calcium acts as a master regulator for bone health. It supports bone density and mineral deposition through bone mineralization, and it also plays a role in neuromuscular relaxation by supporting muscle relaxation and nerve signaling [NIH ODS].
Safety profile
The FDA received a total of 592,059 adverse event reports for calcium-containing supplements. Specific side effects include constipation, nausea, weight loss, extreme tiredness, frequent need to urinate, and abnormal heart rhythms [FDA data]. High levels of calcium in the blood and urine can also cause poor muscle tone, poor kidney function, low phosphate levels, and a high risk of death from heart disease [NIH ODS]. Additionally, calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
We recommend you get your calcium levels checked before starting any supplement. If you choose to supplement, be aware that some research suggests high calcium intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. For this specific product, the vitamin D3 content is "See label," so we cannot provide a specific dosage recommendation. Always take calcium supplements with food and separate them from other medications by at least two hours. Data on the specific Nordic Naturals Nordic Vitamin D3 product's side effects are not available.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Nordic Naturals |
|---|---|
| Serving Size | |
| Contents | 120.0 Softgel(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