Botanical guide · Ingredient reference

Tremella and memory complaints: an eight-week controlled trial

A small study reported improvements in subjective complaints and selected cognitive tests. It did not test dementia prevention.

Read the evidence ↓

Supplement Science Insights Editorial Team

Published September 23, 2026

What the evidence describes

Seventy-five people with subjective cognitive impairment were randomized to 600 or 1,200 milligrams of Tremella fuciformis daily or placebo. The placebo arm contained 15 participants, versus 30 in each active arm. [1]

The active groups improved more on memory-complaint scores and selected short-term memory and executive-function measures. Brain-imaging analyses were exploratory, and reported adverse-event frequency did not differ significantly. [1]

What the finding means

Short follow-up and a small comparator group limit confidence and safety inference. The results do not establish prevention of dementia or equivalence to a skincare product, soup or another extract. Funding and conflicts were not established from the abstract. [1]

A hypothetical distinction

Imagine a questionnaire improves over eight weeks. That is not an observation of dementia incidence over years.

Interpretation checklist — Tremella and memory complaints
DetailInterpretation
FindingPreserve the measured or observed outcome
ContextSpecies, preparation or setting matters
LimitNo universal safety or benefit guarantee
Tremella and memory complaints: an eight-week controlled trial — original article outline diagram
Original editorial diagram of this article’s sections; no product photograph or clinical finding is depicted.

Sources for this article

  1. Efficacy and Safety of Tremella fuciformis in Individuals with Subjective Cognitive Impairment: A Randomized Controlled Trial.
    Source consulted: 2026-09-19. This is a reference resource, not a claim that we conducted the studies or tested a product.