Founder's Insights
Basics & know-how
Approachable explainers from Dr. Siriwardhana covering how supplements are studied, how to read a label, and what to look for, no jargon required.
Read Founder's Insights
Science Hub
The evidence, in one place.
Confidence in supplements should be built on credible science: not guesswork or marketing. The Science Hub translates peer-reviewed research into clear, honest information, so you understand what you're taking and why.
Science-driven
Rooted in real science
Unbiased facts
Three ways in
Start with the basics, go deep or explore the evidence.
Whether you want plain-language answers, the full mechanism-level detail behind a formula, or a closer look at the evidence, there's a path for you.
Science of Supplements
The science behind our formulas
Deep dives into each NUTRITUNES® formula: the ingredients, the studied mechanisms, the doses tested in the literature, and how the evidence is graded.
Read Science of SupplementsASK DR SIRI VIDEO SERIES
Your questions, answered on video
Short videos answering the questions people ask most about supplements, ingredients and our formulas, scripted by Dr. Siriwardhana and grounded in the published research.
Watch "Ask Dr Siri"Our method
Held to the gold standard.
We hold every claim to the gold standard: substantiated with unbiased, reliable scientific data published in peer-reviewed journals. We weigh the evidence as a whole, look to scientific consensus, and connect it to real-world data, so what you find here reflects the science taken together, not a single study or a marketing message.
Stronger evidence sits at the top.
Tier 1
Randomized controlled trials
Human RCTs and meta-analyses of RCTs: the strongest causal evidence.
Tier 2
Systematic reviews
Structured synthesis of the body of published human research.
Tier 3
Observational studies
Cohort and association data: informative, but not proof of cause.
Tier 4
Mechanistic & expert view
In-vitro, animal, or expert opinion: labeled as emerging, never definitive.
Browse by topic
Explore the science by
what matters to you.
Each guide breaks down the ingredients, studied mechanisms, and evidence behind the formula for that health goal.
NutriSulin
Blood Sugar Support
Femuni Balance
Women's Health Support
VitaSterone
Men's Vitality Support
NutriWit
Brain & Cognition Support
CholesTunes
Heart Health Support
Femuni UTH
Urinary Tract Health Support
AllerEzy
Sinus & Immune Support
Getting started
General Supplement Know-How
Evidence standards
What "science-based" actually means here.
Four non-negotiable standards behind every article we publish.
01
Peer-reviewed sources
Claims are grounded in published, peer-reviewed scientific and clinical literature, cited within each article.
02
Graded, not conflated
We distinguish established consensus from emerging evidence, and never present animal or in-vitro data as human proof.
03
Mechanism & dose
We explain how an ingredient is understood to work and the doses studied in the research, for context, not prescription.
04
Transparent disclosure
Our commercial interest is stated openly. Content is written for clarity, evidence grading, and regulatory compliance.
Good to know
Questions about our science.
Is the information here medical advice?
No. The Science Hub is educational. It discusses peer-reviewed research on dietary supplements and human physiology for informational purposes only, and is not a substitute for professional medical advice. Consult a qualified healthcare professional before starting any supplementation program.
How do you decide what evidence to trust?
We grade evidence by strength: from human randomized controlled trials and systematic reviews down to observational, mechanistic, and expert-opinion data. Each claim is labeled accordingly, and we never present emerging, animal, or in-vitro findings as equivalent to established human clinical evidence.
Do you disclose conflicts of interest?
Yes. Dr. Siriwardhana is the founder of NUTRITUNES® and has a commercial interest in the products discussed on this website. All scientific content is grounded in the peer-reviewed literature cited within each article, with an emphasis on transparency and evidence grading.
What's the difference between Founder's Insights and Science of Supplements?
Founder's Insights covers the basics and general supplement know-how in plain language. Science of Supplements goes deeper into the specific ingredients, studied mechanisms, and evidence behind each NUTRITUNES® formula.
Transparency & disclosures
Our commitment to honest science.
NUTRITUNES® publishes educational content discussing peer-reviewed scientific research related to dietary supplements and human physiology. References to clinical studies describe published findings and are provided for informational purposes only.
Dr. Siriwardhana is the founder of NUTRITUNES® and has a commercial interest in the products discussed on this website. All scientific content is grounded in the peer-reviewed literature cited within each article and is written with an emphasis on transparency, evidence grading, and regulatory compliance.
NUTRITUNES® supplements are dietary supplements. They are not intended to diagnose, treat, cure, or prevent any disease or health condition. Individual responses to dietary supplements vary. Readers should consult a qualified healthcare professional before starting any supplementation program, particularly if pregnant, nursing, immunocompromised, taking prescription medications, or managing a diagnosed medical condition.
Stay informed
Get new evidence-based guides and formula breakdowns as they publish. No hype: just the research, clearly explained.