Nature's Way OsteoPrime Plus Calcium & Magnesium
Brand: Nature's Way · Form: TABLET [E0155] On Market
Our assessment
The evidence shows that Nature's Way OsteoPrime Plus Calcium & Magnesium provides calcium, a mineral essential for bone health. However, our assessment is that you should approach this supplement with caution due to potential risks. The data indicates that calcium supports bone density and neuromuscular relaxation, but high intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. For most adults, getting calcium from food is the preferred strategy.
How it works
Think of calcium as a structural building block for your skeleton. It directly supports bone mineralization, helping deposit minerals into bone tissue to maintain density and strength [NIH ODS]. Additionally, calcium plays a role in neuromuscular relaxation, meaning it helps your muscles relax and your nerves signal properly after contraction [NIH ODS]. This dual action makes it a key player in both skeletal and muscular health.
Safety profile
FDA has received a total of 592,059 adverse event reports for this product category [FDA data]. Specific risks from high calcium intake include constipation, nausea, weight loss, extreme tiredness, frequent urination, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. High levels of calcium in the blood and urine can also cause poor muscle tone and poor kidney function [NIH ODS]. Additionally, calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Our recommendation is to prioritize dietary sources of calcium before considering this supplement. If you do choose to take it, do not exceed the RDA of 1,000–1,200 mg per day from all sources combined. Separate calcium supplements from medications like thyroid hormone or antibiotics by at least 4 hours [NIH ODS]. Data on the specific magnesium content and its interactions are not available in the provided information.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Nature's Way |
|---|---|
| Serving Size | |
| Contents | 120.0 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