DC Zinc
Brand: DC · Form: TABLET [E0155] On Market
Our assessment
The evidence shows that calcium is a critical mineral for bone health and muscle function, but it requires careful dosing. Our assessment is that you should prioritize getting calcium from food sources and only use supplements to fill a verified gap in your diet. Relying on supplements without knowing your baseline intake can introduce unnecessary risks [NIH ODS].
How it works
Think of calcium as the primary building block for your skeleton. It supports bone mineralization, which is the process of depositing minerals into bone tissue to keep it dense and strong. It also plays a key role in neuromuscular relaxation, helping your muscles relax and your nerves send signals properly after they have been activated [NIH ODS].
Safety profile
FDA received a total of 592,059 adverse event reports across all supplements, though data for calcium-specific reports is not available. Taking too much calcium can lead to serious issues. High levels in the blood and urine can cause constipation, nausea, weight loss, extreme tiredness, frequent urination, poor muscle tone, poor kidney function, abnormal heart rhythms, and a high risk of death from heart disease. Some research also suggests that high calcium intakes might increase the risk of heart disease and prostate cancer [NIH ODS] [FDA data].
Our recommendation
Do not exceed 500-600 mg of supplemental calcium per day, and take it with food for better absorption. Because calcium can reduce the absorption of medications like bisphosphonates, tetracycline and fluoroquinolone antibiotics, levothyroxine, and phenytoin, you should take calcium supplements at least two hours apart from these drugs. Always talk to your doctor before starting a calcium supplement [NIH ODS].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | DC |
|---|---|
| Serving Size | |
| Contents | 0.0 Not Present |
| 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