Evidence-based supplement intelligence

Stop guessing what supplements you need.
Know what's actually
worth taking.

Personalised, evidence-based guidance built around your symptoms, health and lifestyle - so you know what may help, what probably won’t, and why.

Built by doctors.

Founded by
Practising doctors
Aligned to
UK clinical guidelines
Evidence
Linked to every claim
What ZestIQ does

Personalised to you. Grounded in evidence.

Know what's actually worth taking
Your symptoms, diet, lifestyle and health are personal. Your supplement advice should be too. ZestIQ uses what you tell us to help identify which options are worth considering — and which probably aren't.
See the evidence for yourself
We show you how strong the evidence is, why something has been suggested and what benefit you might realistically expect — so you can make an informed decision rather than relying on marketing claims.
Know when testing makes sense
Sometimes the smartest next step isn't another supplement. ZestIQ helps you understand when a blood test or medical review may be more useful before deciding what to take.
Find out whether it's actually helping
Track how you're feeling over time and see whether things are genuinely changing — so you can keep what helps and stop taking what doesn't.
See it in action
9:41 QUESTION 3 OF 6 How long have you been feeling unusually tired? NICE: fatigue over 3 months warrants investigation Less than 1 month 1–3 months More than 3 months i Helps us work out what to investigate Continue →
Answer a few smart questions
9:41 WHAT MAY BE CONTRIBUTING Low iron stores may be worth checking + 2 other factors Supplements worth considering CONSIDER Iron Most useful if iron stores are low Strong evidence when deficient Your answers suggest low iron could be relevant to your fatigue. Vitamin D May be relevant depending on your profile Moderate evidence May be useful depending on your individual risk Show 2 more supplements →
Get your personalised plan
Founded by two doctors
"We kept seeing the same thing — people taking supplements that weren't right for them, driven by marketing rather than evidence. ZestIQ is what we wished existed."
Dr Farhana Sadek
Dr Farhana Sadek
Co-founder
Dr Nicola Ioannou
Dr Nicola Ioannou
Co-founder

Stop guessing. Start making informed choices.

Join the waitlist for early access to ZestIQ.

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