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Dawai Saathi
A WhatsApp health assistant for Indian families

Understand your prescription, find cheaper medicines, never miss a dose. On WhatsApp.

Send a photo of a prescription or lab report, or a voice note, in Hindi or English. No app to install.

  • Not a doctor: it explains, it never diagnoses
  • Delete all your data any time with DELETE
  • Emergency words go straight to 112 / 108

Scan with your phone, or tap the button, and send "Hi".

Four everyday problems, four plain answers

  • Nobody can read the handwriting on a prescription.

    Send a photo. You get each medicine, dose, timing and number of days in simple words.

  • A lab report shows H and L flags but no explanation, and that causes panic or neglect.

    Every result is compared with its reference range and explained calmly, with questions to ask your doctor.

  • Branded medicines are costly, and few people know a cheaper medicine with the same salt exists.

    Where the salt, strength and form match exactly, you see a generic or Jan Aushadhi option and the approximate saving.

  • Elderly patients forget doses, and medicines from different doctors can clash.

    Reminders on WhatsApp, an optional family alert, and a check of all active medicines against each other.

How it works

  1. 1

    Send a photo

    A prescription or a lab report. A voice note or a typed question works too.

  2. 2

    Get a clear explanation

    What is written, in Hindi or English, with anything unclear flagged for your pharmacist.

  3. 3

    Set reminders

    Tap one button and get a nudge at each dose time. Reply Le li when you have taken it.

What it does

  • Prescription reader

    Medicine, strength, dose, timing and duration from a photo.

  • Generic finder

    Same salt, strength and form, cheaper, with the price date.

  • Lab report explainer

    Plain-language results and questions for your doctor. Never a diagnosis.

  • Dose reminders

    WhatsApp reminders with Taken, Snooze and Skip buttons.

  • Family alerts

    A family member you choose hears about repeated missed doses.

  • Interaction checker

    Known clashes between your medicines, with advice to ask a professional.

  • Voice support

    Speak in Hindi or English; get the answer as text, or as voice if you like.

  • Privacy controls

    Consent first, HELP and STOP any time, DELETE wipes everything.

Safety and privacy are built in

  • Not a doctor

    It explains what is written. It never diagnoses, prescribes or tells you to stop a medicine.

  • Emergencies come first

    Chest pain, breathlessness, self-harm and similar words skip everything and show 112 / 108 (and Tele-MANAS 14416).

  • Says when it is unsure

    If a line is hard to read, it tells you and asks you to confirm with the pharmacist instead of guessing.

  • Consent and DELETE

    Nothing is processed before you agree. Send DELETE and your data is erased.

  • Data stays in India

    Stored in the AWS Mumbai region. Phone numbers are encrypted. Photos expire automatically.

For recruiters and engineers

A production-style system: NestJS gateway and queues, a FastAPI + LangGraph AI service, Postgres, Redis, safety-first evals in CI.

Stack

  • NestJS
  • BullMQ
  • FastAPI
  • LangGraph
  • PostgreSQL + pg_trgm
  • Redis
  • Pinecone
  • Presidio
  • OpenTelemetry
  • Next.js 15
Source code on GitHub

Latest eval run

hard safety gates passed
75/75
test cases
1162
suite runs
13

2026-11-09 · 1a78b9f · all suites, mode fake

Run in fake-model mode: it proves the plumbing and the deterministic safety rules, not reading accuracy on real documents.

Questions people ask

Is this a doctor?

No. It explains what is written on your documents. For any decision about your health, ask your doctor or pharmacist.

What if I have an emergency?

Call 112 or 108 or go to the nearest hospital. If you type words like chest pain, the bot answers only with these emergency numbers.

Can I trust the generic medicine suggestion?

It is a suggestion, not an instruction. We show one only when salt, strength and form match exactly. Always ask your doctor or pharmacist before switching.

What happens to my photos and messages?

They are used to answer you and to run your reminders. Photos are deleted after the retention period. Send DELETE to erase everything now.

Does it cost anything?

This is a portfolio project in testing. There is no payment and no medicine ordering.

Which languages work?

Hindi, English and Hinglish, as text or voice notes.

What if the photo is blurry?

It says which lines it could not read and asks you to confirm those with your pharmacist. It never fills the gap with a guess.

Can I try it without WhatsApp?

Yes. The live demo runs the same pipeline on sample documents. Please do not upload a real patient's report.

Dawai Saathi: A WhatsApp health assistant for Indian families