Isotonix Calcium Plus
Brand: Isotonix · Form: POWDER [E0162] On Market
Our assessment
The evidence shows that calcium is a foundational mineral for bone health, but the safety data requires careful attention. Our assessment is that Isotonix Calcium Plus can be an effective way to meet your calcium needs, provided you do not exceed the recommended daily intake from all sources. The data confirms that calcium supports bone mineralization and neuromuscular function [NIH ODS].
How it works
Think of calcium as a structural building block for your skeleton. It directly supports bone density and mineral deposition, while also playing a critical role in muscle relaxation and nerve signaling [NIH ODS]. This makes it essential not just for strong bones, but for everyday movement and communication between your nerves and muscles.
Safety profile
FDA received 592,059 total adverse event reports for this product category. It is important to be aware that high calcium intakes may increase the risk of heart disease and prostate cancer. 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]. Calcium can also reduce the absorption of medications including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].
Our recommendation
Start by calculating your total daily calcium intake from food and other supplements to avoid exceeding the recommended upper limit. Take this supplement at a separate time from any of the listed medications to prevent absorption issues [NIH ODS]. We recommend consulting with your healthcare provider to determine if this product is right for you, especially if you have a history of kidney stones, heart conditions, or are on thyroid or antibiotic medications.
AI-assisted analysis. Data sourced from NIH DSLD.
Supplement Facts
| Brand | Isotonix |
|---|---|
| Serving Size | |
| Contents | 10.6 Oz(s) 300.0 Gram(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