Kirkland Signature Calcium Citrate with 500 mg of Calcium
Brand: Kirkland Signature · Form: TABLET [E0155]
Our assessment
The evidence shows that Kirkland Signature Calcium Citrate with 500 mg of Calcium is a standard supplement for supporting bone health. Calcium is a critical mineral for bone mineralization and neuromuscular relaxation [NIH ODS]. However, you need to be aware of the potential risks and interactions before adding it to your routine.
How it works
Think of calcium as a building block for your bones and a signal regulator for your nerves and muscles. It supports bone density and mineral deposition, and it helps your muscles relax and your nerves send signals properly [NIH ODS].
Safety profile
Data not available for specific side effects of this product. The FDA has received a total of 592,059 adverse event reports across all supplements. Some research 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, 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
Start with a single tablet daily, as this product provides 500 mg of calcium. Be aware that calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS]. Take this supplement at a different time than those medications. Do not exceed recommended doses without consulting your doctor, as high levels pose serious health risks [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Kirkland Signature |
|---|---|
| Serving Size | |
| Contents | 250.0 Tablet(s) |
| Market Status | Off 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