Life Extension Calcium Citrate With Vitamin D
Brand: Life Extension · Form: CAPSULE [E0159] On Market
Our assessment
The evidence shows that this combination of calcium and vitamin D is a solid choice for supporting bone health, provided you use it correctly. The data supports its role in bone mineralization, but you need to be aware of specific risks and medication interactions [NIH ODS].
How it works
Calcium is a master regulator for your body. It supports bone density through mineralization and helps your muscles relax and nerves signal properly [NIH ODS]. The vitamin D in this product helps your body absorb that calcium effectively.
Safety profile
FDA has received 592,059 total adverse event reports for products containing these ingredients [FDA data]. High calcium levels 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]. Some research also suggests high intakes might increase the risk of heart disease and prostate cancer [NIH ODS].
Our recommendation
You should take this with food and separate it from medications like bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin by at least two hours, as calcium can reduce their absorption [NIH ODS]. Do not exceed the recommended dose without your doctor’s guidance, and monitor for symptoms like nausea or constipation [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Life Extension |
|---|---|
| Serving Size | |
| Contents | 300.0 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