QuattroFerrin 21

QuattroFerrin® 21 is Biogena's innovative iron complex, built around the proprietary QuattroFerrin® Blend — four distinct iron sources that each rely on a different absorption pathway in the gut.

The formula combines plant-derived iron from curry leaf extract, koji mushroom (Aspergillus oryzae, fermented via the patented Ultimine™ process), the well-studied amino acid chelate iron bisglycinate, and a specially coated iron pyrophosphate designed for extra tolerability.

 Together these deliver 21 mg of iron per capsule.

Natural vitamin C from camu camu — one of the richest known fruit sources of vitamin C — is included specifically to enhance non-heme iron absorption, rounding out a formula built for both efficacy and gut comfort.

Made in Austria at Biogena's own production facility in Salzburg under the company's "pure substance principle," QuattroFerrin® 21 is vegan, gluten-free, lactose-free, and free from artificial colors, titanium dioxide, magnesium stearate, GMOs, and nanoparticles.

Every batch is independently tested by the German LEFO Institute, and production is certified to FSSC 22000 standards.

Ideal for anyone with elevated iron needs — including women, pregnant and breastfeeding mothers, athletes, and those following a predominantly plant-based diet.