, ,

Klean Iron

Klean Iron by Douglas Laboratories supplies 27 mg of iron from iron carbonyl to help support muscle strength and athletic performance in a bioavailable, well-tolerated delivery form.


FREE Shipping on orders over $125
Guaranteed Safe Checkout
Douglas Laboratories logoKlean Athlete by Douglas Laboratories

Klean Iron

Klean Iron by Douglas Laboratories supplies 27 mg of iron from iron carbonyl to help support optimal iron levels, which in turn affect athletic performance and muscle strength. Iron carbonyl (Ferronyl®) has excellent bioavailability, low toxicity and is well-tolerated.

Klean Iron is tested and certified by the NSF Certified for Sport® Program, which was created to meet the growing demands of athletes, coaches and healthcare professionals to certify that sports supplements are safe and completely free from banned substances. Every product that carries the NSF® mark has undergone stringent laboratory testing to confirm content, purity and compliance.


  • Essential for red blood cell formation
  • Support for athletic performance
  • Support for muscle strength

Functions and Mechanism of Action

Iron is an important component of hemoglobin in red blood cells and myoglobin in muscle cells where it is required for oxygen and carbon dioxide transport. Optimal iron levels of at least 20-25 ng/mL have been associated with athletic performance, muscle strength and mitochondrial function.

In a clinical trial involving iron-depleted (serum ferritin <20 μg/L) individuals, six weeks of supplementation with 20 mg of iron per iron day improved iron status by enhancing serum iron. Iron supplementation also improved muscle fatigue of the quadriceps femoris muscle group, which may support physical performance.


Serving Size 1 Tablet

  • Iron (as Ferronyl®, iron carbonyl) – 27 mg

Other ingredients: Microcrystalline cellulose, ethylcellulose, stearic acid, vegetable stearate, silica and coating (hypromellose, glycerin)

Suggested Use

As a dietary supplement, adults take 1 Klean Iron tablet daily without food or as directed by one of our health coaches, trainer, or health professional.

WARNING: Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6.

KEEP THIS PRODUCT OUT OF REACH OF CHILDREN. In case of accidental overdose, call a doctor or poison control center immediately. Typical iron supplementation, including forms such as ferrous sulfate, can cause gastrointestinal side effects because these forms of iron are poorly absorbed. 

Klean Athlete’s Iron provides 27mg of elemental iron per tablet in the form of iron carbonyl, which has properties to allow for high absorption in the gastrointestinal tract, thus helping to decrease the typical gastrointestinal side effects.


If you are pregnant, nursing, have any health condition or taking any medication, consult your health professional before using this product.

Side Effects

If gastrointestinal symptoms occur, take with food.


Store in a cool, dry place. Use only if safety seal is intact.

Gluten Free     GMO Free     Vegan     Vegetarian


Douglas Laboratories

Douglas Laboratories® researches, develops and manufactures the right suite of rigorously designed, science-based, healthy aging supplements, and provides customized practice support. With a 60-year heritage of innovating and designing products to meet the needs of healthcare professionals, we push the potential of both clinical practices and patients to continually perform at their personal best, today and in the future.
Douglas Laboratories logo

Klean Athlete

When athletes visit your practice, they each present a unique set of challenges and individual needs. They may not be sick, but could be injured. They’re both energized and fatigued from their latest adventure, training session or competition. The Klean Athlete product line provides a solid nutrient foundation, including the vitamins, minerals and nutrients the body needs to perform at its best. Klean Athlete products fuel and fortify any athlete’s ability to optimize performance despite life’s daily stresses and promote an athlete’s overall health and wellness at any age, intensity or experience level. Every bottle of Klean Athlete is tested and certified by the NSF Certified for Sport® program,designed to endure safer sports nutrition, free from banned substances and contaminants. Whether you work with recreational athletes, active baby boomers or professional athletes, Klean Athlete has a place in your practice.
Klean Athlete by Douglas Laboratories


There are no reviews yet.

Be the first to review “Klean Iron”

Your email address will not be published. Required fields are marked *

Shopping Cart
Klean Iron 90ct by Douglas LaboratoriesKlean Iron
Scroll to Top