Key takeaways
- Bioavailability is how much of a substance is absorbed and available.
- For most mushroom compounds, human data is limited.
- Extraction releases compounds into a product; it doesn’t prove absorption.
- “More bioavailable” claims need human evidence.
“Bioavailability” appears often in supplement marketing. This article explains what it means, and why it’s easy to overstate.
A definition
Bioavailability describes the proportion of a substance that is absorbed and reaches the circulation or the place where it may act. It depends on the compound, the form it’s in, the rest of the diet and the individual.
Why it’s complicated for mushrooms
- Mushrooms contain many different compounds, each behaving differently.
- Large molecules such as beta-glucans aren’t absorbed in the usual way.
- Human data on how most mushroom compounds are absorbed is limited.
Extraction and availability
Extraction releases compounds from the tough cell wall into a liquid or powder. That makes them available in the product. It doesn’t, on its own, show how well they are absorbed in the body. See Why Mushroom Cell Walls Matter.
Reading bioavailability claims
- Is there human data, or is it inferred from lab work?
- Which compound, specifically?
- Compared with what?
Our position
We describe how our tinctures are extracted. We don’t claim they are more bioavailable, because that would need human evidence we don’t have.