Rugby Natural Chewable Calcium
Brand: Rugby · Form: TABLET [E0155] On Market
Our assessment
The evidence shows that calcium is a foundational mineral for bone health, but supplementing with it is not a simple decision. You need to be aware of both the benefits and the potential risks before starting a product like Rugby Natural Chewable Calcium. The data confirms that calcium supports bone mineralization and nerve signaling [NIH ODS]. However, we advise caution because high intakes may carry significant health risks [NIH ODS].
How it works
Think of calcium as a structural building block for your bones and a signal conductor for your nerves and muscles. It works through two primary mechanisms: bone mineralization, which helps deposit minerals into your skeleton for density, and neuromuscular relaxation, which supports proper muscle function and nerve signaling [NIH ODS].
Safety profile
The FDA has received a total of 592,059 adverse event reports for this product category [FDA data]. Specific safety concerns to be aware of include that high calcium intakes might increase the risk of heart disease and prostate cancer [NIH ODS]. High levels 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]. Additionally, calcium can reduce the absorption of several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
We recommend you do not start this supplement without first consulting your doctor. The potential risks, especially the link to heart disease and medication interactions, require a personalized assessment. If you do proceed, your doctor should check your current calcium levels and review any medications you take to ensure safety [NIH ODS] [FDA data].
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Rugby |
|---|---|
| Serving Size | |
| Contents | 60.0 Tablet(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