Functional Mushroom Supplements: Mycelium, Fruiting Body and What to Check

Mushroom supplements have one label distinction that matters more than everything else on the panel, and it is frequently not disclosed.

Mycelium versus fruiting body

The fruiting body is the mushroom itself. Mycelium is the root-like network, and in commercial production it is commonly grown on grain, then harvested and dried together with the substrate it grew on. The resulting product - often labelled mycelium on grain or myceliated biomass - can be substantially starch by weight. Analyses have found high alpha-glucan content in such products, reflecting grain starch, where fruiting body products show higher beta-glucan content.

What to check on a label

Look for the part used, stated explicitly. Look for beta-glucan content specified as a percentage, which is the meaningful measure, and be aware that polysaccharide content is a broader measure that includes starch and is therefore easier to inflate. Look for extraction method, since hot water extraction is used for beta-glucans and alcohol extraction for other compounds, and dual extraction covers both. Raw powder is not extracted at all.

Realistic expectations

The research base varies considerably by species and is generally more developed in preclinical than human work. Lion's mane has attracted the most attention for cognitive applications with some small human trials, results being preliminary rather than settled. Product quality varies enormously across this category specifically, which makes third-party testing and clear labelling more important here than in most supplement categories.

If you are considering NeuronGold

Read the NeuronGold ingredients page before ordering, check the 60-day guarantee terms, and if you take prescription medication show the label to a pharmacist — the L-Tryptophan content matters for anyone on serotonergic medication. Our buyer’s checklist sets out twelve checks worth running first.