Nordic Naturals Omega-3D Lemon

Our assessment

The evidence shows that this product contains calcium, a mineral essential for bone health. Based on the data, calcium supports bone mineralization and neuromuscular function [NIH ODS]. However, we must be clear that the specific formulation of this product is labeled only as "See label," so we cannot verify the exact dose or form of calcium you are getting.

How it works

Think of calcium as a structural building block for your bones and a molecular messenger for your nerves and muscles. It directly supports bone density and mineral deposition, and it helps your muscles relax and your nerves signal properly [NIH ODS].

Safety profile

Data not available for this specific product. However, the FDA has received a total of 592,059 adverse event reports across all supplements in its database [FDA data]. For calcium specifically, high intakes may increase the risk of heart disease and prostate cancer. Very high levels in the blood can cause poor muscle tone, poor kidney function, constipation, nausea, weight loss, extreme tiredness, frequent urination, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Calcium can also reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].

Our recommendation

We recommend you check with your healthcare provider before starting this supplement, especially if you take any medications listed above. Because the exact calcium content is not clear from the label data provided, you should not rely on this product as your primary calcium source without verifying the dose. For most adults, getting calcium from food is preferred, and supplements should only fill a gap identified by your doctor [NIH ODS].

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