Fermented Substrate vs Filler
Channel: Host Defense Mushrooms
Date: 06/07/2023

Based on years of scientific research, Fungi Perfecti® uses mushroom mycelium as the foundation for all Host Defense® products – including capsules, powder, extracts, and drink mixes!

There's a lot of misunderstanding and negative messaging in the mushroom industry about the use of mycelium because of the substrate required to grow it.

Commonly made claims indicate that mycelium-based products – which include the fermented substrate – have fewer health-supporting benefits than fruit body-only products, and are nothing but a mixture of mycelium and “filler”.

But there’s a fundamental difference between a fermented substrate and a filler! 

A filler is just an additive, or an ingredient that either serves to add bulk or weight to the end product, with no discernible health benefit. 

There are no “fillers” used in Host Defense products. Both the mushroom mycelium and the fermented rice substrate we use in our supplements have been researched, tested, and shown to offer health-supporting benefits.* 

Want to learn more? Read our blog about mycelium and the fermented brown rice biomass used to power ALL Host Defense products. https://bit.ly/3CRccw2 

*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.