PharmaNex is the counter, the stockroom and the clinical desk in one console — offline-capable at the till, exact about which batch left the shelf, and explicit about the limits of what it can verify.
Till 1 — Main counter
Interactive demo · sample dataThe date shown is the earliest sellable expiry — the batch the next sale comes out of. Allocation is FEFO and happens server-side, so two tills cannot both claim the last box.
Current sale
Panadol 500mg
2 × Rs 120
Sent straight through. The batch is allocated FEFO on the server, so the receipt records the box that actually left the shelf.
The counter
A pharmacy does not close because the connection dropped. The hard part is not staying on screen — it is making sure the sale that happened during the outage is still true afterwards, in the ledger, against the right batch, in the right hour.
The customer paid and walked out with the box, so the record has to exist. A sale rung with the network down is held locally, with the id it was rung under and the minute it happened. Replay is a plain retry — idempotent, so a timeout that lands after the server already committed cannot bill twice — and it books into the hour it was sold, not the hour it synced.
A register cannot see the other tills, so it never picks a batch. Allocation runs server-side when the sale lands, oldest sellable expiry first. A line split across two batches becomes two rows in the ledger — the receipt still shows one line, but a recall needs to know which physical box left the shelf.
A carton barcode and a bottle barcode are different codes for the same product. The till prefills the quantity from the pack level that was read, and prefills nothing at all when the code has not been tagged yet — a guess in that position is a stock count that quietly stops matching the shelf.
Clinical checks
The NLM retired the RxNav drug-interaction API at the start of 2024. It returns 404 now. Any checker written as if (!res.ok) return [] has been answering “no interactions found” ever since — which converts an outage into a clean bill of health at the exact moment a pharmacist is deciding whether to hand over two drugs together.
Each drug is resolved to its ingredients through RxNorm. The Drug Interactions section of each drug’s FDA label is then read from openFDA, and the system reports where one drug’s label names the other’s ingredient — quoting the label’s own wording and attributing it.
Every response carries an explicit status. Nothing returns an empty result to mean failure, because “we checked and found nothing” and “we could not check” are not the same answer.
Those three sentences travel with the response itself, so no screen can present the result as more than it is.
Platform
None of these sell a demo. All of them are the difference between software that works for a month and software a pharmacy can still trust in year three.
Every query runs inside a transaction that sets the tenant with SET LOCAL, so the value reverts on commit and cannot leak onto the next request that borrows that pooled connection.
Amounts stay numeric(14,2) and come out of Postgres as strings. The conversion happens once, at the display boundary, where precision no longer matters.
Supplier delivery notes and uploaded prescriptions are read into structured lines. A person confirms them before any stock moves or anything is dispensed.
The console hides what you cannot use, and the API independently re-checks every request. A redirect is an affordance; the 403 is the control.
Who changed a price, who reversed a sale, who edited a batch — recorded, with the tenant it happened in, and readable from the console.
Customers order online against the same inventory the counter sells from. Light-themed on purpose: retail is read on a phone, outdoors, in daylight.
Reorder suggestions come from what actually sold and what is close to expiry, not from a reorder level someone typed in once and never revisited.
A 50×25mm thermal label sheet and a 76mm receipt, each on its own print path, so printing an invoice never emits a blank page from the label roll.
Fourteen screens, one login: the till, stock and batches, purchasing, prescriptions, online orders, clinical reference, and the reports that come out of all of it.
