Tavita

Our story

Built by a patient who can't afford guesswork

Most health apps are built by teams imagining what patients need. Tavita is built by someone whose next lab result depends on getting it right.

Marquis Mendoza, founder of Tavita, smiling outdoors
Marquis MendozaFounder of Tavita

Illustration of a man carefully examining a supplement bottle through a magnifying glassHi, I'm Marquis. I live with stage-5 chronic kidney disease. I've had two kidney transplants — each gave me eight good years — and today I'm on dialysis. My days are built around medications and supplements, so whether they actually work isn't a curiosity for me. It shows up in my blood work every month.

I've also always been the person who checks everything. Before moving somewhere new, I pull the flood and landslide records for the area. Before buying a second-hand car, I check the flood map of the seller's neighborhood to make sure it never sat in water. That's not a habit I picked up to build an app — it's who I've been all my life.

Tavita is that same obsession with detail, pointed at the thing that matters most.

Why it exists

The question I kept hearing

Illustration of an iron capsule and a coffee cup with a fading dotted line between them
“Why isn't my iron rising? I take my supplement every day.”

In my dialysis support groups, that question comes up again and again. And every time, I want to ask: are you taking it with your coffee? With your calcium? With a medicine that blocks it? Others quietly add herbal supplements on top of their maintenance meds, never suspecting the combination could work against them.

Not every problem is a timing problem. But the ones that are, are completely avoidable — and nobody should lose months of progress to something a smarter schedule could have caught.

What I did about it

So I built the app I needed

Timed for absorption

Tavita schedules each supplement and medicine around what blocks what — food, coffee, minerals, other pills — so every dose gets its best chance to work.

Flags what shouldn't mix

Risky combinations are flagged in plain language, so you can bring them to your doctor or pharmacist — instead of finding out from a lab result.

Tested on its toughest user

I take more pills in a day than most people take in a week. Every feature ships because it survived my own routine first.

Where you stand

What I promise you

Illustration of two hands holding a small globe orbited by supplement capsules and a leaf

Your care team has the final word

Tavita will never pretend to be your doctor. It organizes what you already take and surfaces what's worth asking about — nothing more, and nothing less.

Your health data stays on your phone

No account required, no ads, no selling data. I wouldn't accept less for my own medical history, so it's what you get too.

Built for patients everywhere

If Tavita helps even a fraction of the people asking why their supplements aren't working, it will have done its job. That's the whole mission.

Start tracking food and supplements together

Tavita is coming soon to iOS and Android. Join the launch list and we'll email you the day the nutrition and calories tracker with a supplement brain ships.

Notify me at launch
Download on theApp StoreGet it onGoogle Play

Coming soon to iOS & Android

Questions? support@tavita.app or visit support.