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The first brand-neutral app for a medically prescribed low-protein diet.

From your doctor's prescription to a gram-precise meal plan, every low-protein brand in one marketplace, and the community and clinical care that finally make this condition livable โ€” for people with PKU, other metabolic disorders, and late-stage kidney disease.

Built by a PKU patient · for PKU, metabolic disorders & chronic kidney disease
Who are we

Imagine measuring every gram of protein you ever eat.

I was born with PKU, a metabolic disorder where my liver cannot process an amino acid called phenylalanine, found in protein. It means I can't eat meat, dairy, wheat, eggs, or certain artificial sweeteners. The ordinary foods that bring people together are a genuine risk to a PKU patient's brain development in childhood. For twenty-one years I have carried the anxiety and the relentless daily arithmetic this lifestyle demands โ€” and still, there is no united access to the low-protein products we depend on: they are scattered across dozens of separate brands and shops. The solution simply didn't exist. So I'm building it.

Fanni Herczeg, founder & patient

The solution · one app, end-to-end

Everything the diet demands, in one place.

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Prescription โ†’ meal plan

Turns your doctor's prescription into a gram-precise, personalised meal plan.

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One marketplace

Every low-protein brand in one place โ€” compare, order and auto-reorder in seconds.

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A community that gets it

Connect with patients, parents and carers who live the same reality โ€” locally and worldwide.

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Care, built in

Your dietitian and clinic, integrated โ€” book, message and stay monitored in-app.

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Track with confidence

Log intake and blood levels, with gentle reminders so nothing slips.

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Made for real life

Designed with lived experience, so the hardest diet in the world finally feels manageable.

From prescription  โ†’  to plate  โ†’  to care.

Who it's for

A lifelong, underserved community.

Millions of people worldwide depend on a restricted-protein diet โ€” and no one has built the brand-neutral, end-to-end platform we deserve.

PKU (phenylketonuria) MSUD Urea cycle disorders Organic acidemias Late-stage chronic kidney disease
Early access

Be first to use Fanniceuticals.

Join the waitlist, or reach out about partnership, investment or collaboration โ€” one form, we'll route it to the right place.

No spam, ever. We'll only email you about early access and updates.