Pure Encapsulations Calcium (MCHA) with Magnesium
Brand: Pure Encapsulations · Form: CAPSULE [E0159] On Market
Our assessment
The evidence shows that calcium is essential for bone health and nerve function, but the Pure Encapsulations Calcium (MCHA) with Magnesium product requires caution. Our assessment: for most adults, obtaining calcium from food is preferred, and supplements should only be used to fill a verified gap in your diet. The data confirms that the ingredient calcium supports bone mineralization and neuromuscular relaxation [NIH ODS].
How it works
Think of calcium as a building block and a signaler. It works through bone mineralization to support bone density and mineral deposition, and it also plays a role in neuromuscular relaxation, which supports muscle relaxation and nerve signaling [NIH ODS]. This dual action makes it important for both your skeleton and your daily muscle function.
Safety profile
FDA received 592,059 total adverse event reports across all products. Specific side effects from high calcium intakes include constipation, nausea, weight loss, extreme tiredness, frequent need to urinate, abnormal heart rhythms, and a high risk of death from heart disease [NIH ODS]. Some research also suggests that high calcium 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, and low phosphate levels [NIH ODS].
Our recommendation
Start by assessing your total daily calcium intake from all sources. If you have a confirmed deficiency, use this supplement cautiously. Be aware that calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. We recommend consulting with your healthcare provider to check your calcium levels and to discuss potential medication interactions before starting this supplement.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Pure Encapsulations |
|---|---|
| Serving Size | |
| Contents | 180.0 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