Product Label

Klean Athlete Klean Magnesium

Brand: Klean Athlete · Form: CAPSULE [E0159] On Market

Our assessment

The evidence shows that magnesium is a critical mineral for muscle function and recovery, especially for athletes. However, based on the data provided, Klean Athlete Klean Magnesium contains calcium, which supports bone mineralization and neuromuscular relaxation [NIH ODS]. Our assessment is that this product may be beneficial for bone health, but you need to be aware of specific safety considerations.

How it works

Think of the calcium in this product as a structural support for your skeleton and a signal regulator for your nerves and muscles. It works through bone mineralization, helping deposit minerals to maintain bone density, and it supports neuromuscular relaxation, allowing your muscles to relax properly after contracting [NIH ODS].

Safety profile

FDA received a total of 592,059 adverse event reports for this product category. For calcium specifically, high intakes may increase the risk of heart disease and prostate cancer [NIH ODS]. Side effects from high calcium levels include 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 several medications, including bisphosphonates, tetracycline antibiotics, fluoroquinolone antibiotics, levothyroxine, and phenytoin [NIH ODS].

Our recommendation

Data not available on the exact dosage or form of magnesium in this product. You should consult a healthcare provider before starting this supplement, especially if you take any medications that interact with calcium. If you have a history of kidney issues or heart conditions, discuss the risks of high calcium intake with your doctor. For most people, getting calcium from food sources is the safest approach [NIH ODS].

AI-assisted analysis. Data sourced from NIH DSLD.

Supplement Facts

BrandKlean Athlete
Serving Size
Contents90.0 Vegetarian Capsule(s)
Market StatusOn 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

Original Label

View Full DSLD Label (PDF)

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