Nature's Harmony O-Calcium 500 mg With Vitamin D
Brand: Nature's Harmony · Form: TABLET [E0155] On Market
Our assessment
The evidence shows that calcium is essential for bone health, but the specific product "Nature's Harmony O-Calcium 500 mg With Vitamin D" has very limited data available. Our assessment is that you should approach this supplement with clear knowledge of the benefits and risks. The primary ingredient, calcium, supports bone density and muscle relaxation [NIH ODS]. However, the specific formulation and brand details are not fully provided in the data.
How it works
Think of calcium as a foundation builder for your body. It works through bone mineralization, helping deposit minerals into your skeleton to maintain strong bones. It also plays a key role in neuromuscular relaxation, which helps your muscles relax and your nerves send signals properly [NIH ODS]. Without enough calcium, your body will leach it from your bones, which can weaken them over time.
Safety profile
Safety data is critical here. The FDA has received a total of 592,059 adverse event reports for products containing these ingredients, though this number covers all brands and formulations, not just this specific product [FDA data]. For calcium specifically, high intakes might increase the risk of heart disease and prostate cancer. High levels 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]. Additionally, calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Data on the exact number of reports for this specific brand is not available.
Our recommendation
Our recommendation is to be cautious. Because the specific product data is incomplete, we advise you to consult your healthcare provider before starting this supplement. If you decide to take it, pay close attention to your total calcium intake from all sources (food and supplements) to avoid exceeding safe levels. Also, take this supplement at a different time than any of the medications listed above to avoid absorption issues [NIH ODS]. For a general audience, getting calcium from food sources is often the safest and most effective approach.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Nature's Harmony |
|---|---|
| Serving Size | |
| Contents | 60.0 Tablet(s) |
| Market Status | On 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