These are independent studies published in peer-reviewed journals about the ingredients we use. Every entry carries a PubMed ID — click it and you land on the original source and can check for yourself. None of these studies was run on RÝYTAS products.
Participants are assigned to groups by chance. That makes the groups comparable, so a difference can be put down to the substance rather than to one group simply being healthier.
Some participants get an inactive capsule. Without one you cannot separate the effect of the substance from expectation — and expectation works, strongly and genuinely.
Neither the participant nor the researcher knows who got what until the study ends. That guards against nudging the results, unconsciously, in the hoped-for direction.
A thirty-person study is a hint, not proof. A few thousand is a serious argument. That is why the number sits on every study here instead of being hidden.
“Mushrooms are not medicine. Some of these studies are small, some were run only in Japan or India, and one of the largest on the list — the ginkgo trial — came out negative. We put it in on purpose: a page with only good news isn't science, it's advertising.”
— Jonas, founder of RÝYTAS
Mori K. and colleagues, 2009, in Phytotherapy Research · Japan
Participants aged 50–80 with mild cognitive impairment.
Source: PubMed 18844328Nagano M. and colleagues, 2010, in Biomedical Research · Japan
Thirty women; mood and sleep scales were assessed.
Source: PubMed 20834180Saitsu Y. and colleagues, 2019, in Biomedical Research · Japan
The abstract does not state the number of participants.
Source: PubMed 31413233Docherty S. and colleagues, 2023, in Nutrients · United Kingdom
A pilot study; the authors call their conclusions tentative.
Source: PubMed 38004235Tang W. and colleagues, 2005, in Journal of Medicinal Food · China
132 patients diagnosed with neurasthenia.
Source: PubMed 15857210Chandrasekhar K. and colleagues, 2012, in Indian Journal of Psychological Medicine · India
Salve J. and colleagues, 2019, in Cureus · India
Langade D. and colleagues, 2019, in Cureus · India
Pingali U. and colleagues, 2022, in Phytomedicine · India
60 post-menopausal women, aged 45–65.
Source: PubMed 35933897Neltner T.J. and colleagues, 2024, in Journal of Dietary Supplements · USA
A blood marker was measured, not how people felt.
Source: PubMed 36546868Hidese S. and colleagues, 2019, in Nutrients · Japan
30 participants (9 men, 21 women), mean age 48.
Source: PubMed 31623400Haskell C.F. and colleagues, 2008, in Biological Psychology · United Kingdom
Acute effects; a placebo-controlled crossover design.
Source: PubMed 18006208Reay J.L. and colleagues, 2010, in Human Psychopharmacology · United Kingdom
Thirty volunteers, mean age 22.9.
Source: PubMed 20737519Hirsch K.R. and colleagues, 2017, in Journal of Dietary Supplements · USA
28 participants; VO2 and endurance were measured.
Source: PubMed 27408987Dai X. and colleagues, 2015, in Journal of the American College of Nutrition · USA
52 healthy participants, aged 21–41.
Source: PubMed 25866155Jogi E.M. and colleagues, 2026, in Journal of Nutritional Science and Vitaminology · Japan
47 healthy participants aged 60 and over.
Source: PubMed 42055721DeKosky S.T. and colleagues, 2008, in JAMA · USA
3,069 volunteers aged 75+, followed for ~6 years. Ginkgo did NOT reduce dementia incidence. Included on purpose.
Source: PubMed 19017911RÝYTAS products are food supplements. Food supplements are not medicines: they do not treat, diagnose or prevent disease, and they do not replace a varied, balanced diet and a healthy lifestyle. This page summarises independent published research for information only; it is not a claim about the health effects of our products. If you take medication, are pregnant or breastfeeding, speak to your doctor.
Compiled, and every PMID verified against PubMed, on 2 September 2026.