Kirkman Magnesium Citrate Soluble Powder
Brand: Kirkman · Form: POWDER [E0162] On Market
Our assessment
The evidence shows that calcium is a critical mineral for bone health, but the data also highlights significant risks that you need to be aware of. Our assessment is that while calcium supports bone mineralization and neuromuscular relaxation [NIH ODS], you should not assume it is safe in unlimited amounts.
How it works
Think of calcium as a structural building block for your skeleton. It works through bone mineralization to support bone density and mineral deposition, and it also supports muscle relaxation and nerve signaling [NIH ODS].
Safety profile
The FDA received a total of 592,059 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].
Our recommendation
You should be cautious with calcium supplementation. The data shows that calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Data on the specific form of calcium in Kirkman Magnesium Citrate Soluble Powder is not available for this product. We recommend you consult your healthcare provider before adding any calcium supplement to your routine.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Kirkman |
|---|---|
| Serving Size | |
| Contents | 227.0 gm 8.0 oz. |
| 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