Cordyceps Flower, Sand Ginseng, Snow Ear and Muscovy Duck Soup

What studies say about the key ingredients

Traditional use is not the same as clinical proof. Here is the strongest human research we found for each ingredient, limitations included.

• Cordyceps flower · Randomized controlled trial · 2015
  Compared with placebo capsules, the C. militaris group had greater increases from baseline in NK cell activity, lymphocyte proliferation, IL-2 and IFN-γ. No statistically significant adverse reactions were reported.Limitation: Only healthy men were studied, for 4 weeks, with 39 and 40 per group. Findings are immune-marker changes rather than clinical outcomes, and the capsules were an ethanol-treated preparation.PubMed 26284906 · 2 more cordyceps flower studies
• Snow fungus · Randomized controlled trial · 2018
  The Tremella fuciformis groups showed greater improvements than placebo in subjective memory complaint scores, short-term memory and executive function tests. Adverse event frequency was similar across high-dose, low-dose and placebo groups.Limitation: Small sample with only 15 people in the placebo group and a short 8-week duration; the brain imaging findings were exploratory.PubMed 29319408
• Goji berries · Meta-analysis, 161 participants · 2012
  Compared with placebo (n=80), the goji juice group (n=81) reported greater improvements in several self-rated symptoms, including stress, mental acuity, sleep quality and overall well-being, under a random effects model.Limitation: Outcomes were self-reported symptom questionnaires, and several symptoms showed significant heterogeneity across the four pooled trials of a single branded juice.PubMed 22897500 · 3 more goji berries studies

From the Nourilo Research Library. Findings come from specific doses, extracts and populations and may not apply to a home-cooked recipe.