Priority One Nutritional Supplements M.C.H.C Calcium
Brand: Priority One Nutritional Supplements · Form: CAPSULE [E0159] On Market
Our assessment
The evidence shows that calcium is essential for your health, but supplementation requires careful attention to dosage. Calcium supports bone density and muscle relaxation [NIH ODS]. However, our assessment is that you should first try to meet your calcium needs through food before turning to a supplement, as the data reveals potential risks with high intakes.
How it works
Think of calcium as a building block and a messenger. It works through two primary mechanisms: bone mineralization, where it helps deposit minerals to keep your skeleton strong, and neuromuscular relaxation, where it supports proper muscle and nerve signaling [NIH ODS]. This makes calcium critical for both your structural and functional health.
Safety profile
FDA received 592,059 total adverse event reports across all products. For calcium specifically, some research suggests that high intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. 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]. 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 calcium from food sources. If you do use a supplement, take it with food and avoid exceeding 2,000–2,500 mg total daily intake from all sources. Be aware of the interaction window: separate calcium from medications like thyroid hormone or antibiotics by at least two hours [NIH ODS]. Data on the specific formulation of this product is not available, so choose a reputable brand that undergoes third-party testing.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Priority One Nutritional Supplements |
|---|---|
| Serving Size | |
| Contents | 120.0 Capsule(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