Barlean's Organic Oils Omega Twin

Our assessment

The evidence shows that Barlean's Organic Oils Omega Twin is a dietary supplement providing calcium, which is critical for bone health. Our assessment is that while calcium is essential, you should be aware of the specific risks and interactions associated with this mineral before adding it to your routine [NIH ODS].

How it works

Think of calcium as a building block and messenger for your body. It supports bone density and mineral deposition through a process called bone mineralization, and it is also vital for neuromuscular relaxation, meaning it helps your muscles relax and your nerves signal properly [NIH ODS].

Safety profile

Data not available for adverse event reports specific to this product. However, for the ingredient calcium, some research suggests that high intakes might increase the risk of heart disease and prostate cancer. High levels of calcium 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]. The FDA has received a total of 592,059 adverse event reports across all supplements [FDA data].

Our recommendation

We recommend you check the specific calcium dosage on the Barlean's label and consider your total daily intake from food and other supplements. Be aware that calcium can reduce the absorption of medications like bisphosphonates, tetracycline and fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Always discuss new supplements with your healthcare provider, especially if you take prescription medications.

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