Why we built this
We kept running into the same question people had when managing multiple supplements and medications: "Is it actually safe to take all of these together?"
Most free tools either don't check supplement interactions at all, or only check one supplement against one drug at a time. Nobody was looking at a person's full stack — all their medications and all their supplements together — and explaining what that actually meant in plain English.
So Elthio became that. A free tool that checks your full stack for interactions, builds a personalized timing schedule, grades supplement quality, and helps you bring a clear summary to your doctor.
What Elthio checks
Every Med Check runs your medications and supplements against:
- 334 curated interaction rules — sourced from the NIH Office of Dietary Supplements, the NIH National Center for Complementary and Integrative Health, and peer-reviewed journals. Every rule shows its source and evidence strength.
- FDA adverse event data (FAERS) — real reports from real patients who experienced side effects combining specific drugs and supplements.
- NIH ingredient verification (DSLD) — checks whether a product's label actually matches what's registered with the NIH Dietary Supplement Label Database.
- Semantic search — you can describe your situation in plain English ("I take a blood thinner and want to try turmeric") and Elthio understands what you mean, even without exact drug names.
What Elthio is not
I want to be straightforward about this:
- Elthio is not a substitute for medical advice. It's a research and awareness tool. Every result includes sources so you can verify them yourself and bring questions to your doctor or pharmacist.
- The interaction database is not exhaustive. 334 rules covers the most common and clinically significant combinations, but it's not every possible interaction. Professional databases like DrugBank have thousands more — expanding coverage is ongoing.
- The AI explanations are AI-generated. AI models synthesize the rule data and FDA reports into plain English. The underlying rules and sources are fixed and citable. The explanation text is generated and, while designed to be accurate and conservative, can occasionally be imperfect — which is why every source is shown so you can check the original.
- No part of Elthio has been formally reviewed by a licensed pharmacist yet. This is something I'm actively working on. If you're a pharmacist or have clinical experience and want to help review the rule database, I'd genuinely love to hear from you — get in touch.
How Elthio is free
Elthio is free and always will be for the core safety check, quality grading, and timing schedule. There are no ads, no affiliate links, and no commercial relationships that influence results.
Safety rankings are based purely on NIH verification and interaction data. Quality grades are based purely on bioavailability and filler evidence. Nothing is influenced by brand relationships or commissions.
Your privacy
Elthio doesn't require an account to use. If you choose to save your stack for weekly safety updates, your email and stack data are stored securely and never sold or shared. You can delete your data at any time by contacting me. Shared stack links never show your email publicly.
Questions or feedback?
If something seems wrong, missing, or could be better — please tell me. This is a tool I'm building because I think it's genuinely useful, and feedback directly shapes what gets built next.
Get in touch →