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UNIPEN INJECTION PWS 500MG/VIAL 500 MG — DIN 02043785

NAFCILLIN (NAFCILLIN SODIUM) : 500 MG · WYETH-AYERST CANADA INC. · POWDER FOR SOLUTION · wholesale supply in Canada

Health Canada status: CANCELLED POST MARKET

What is UNIPEN INJECTION PWS 500MG/VIAL?

UNIPEN INJECTION PWS 500MG/VIAL 500 MG contains NAFCILLIN (NAFCILLIN SODIUM) : 500 MG. It is listed in the Health Canada Drug Product Database under DIN 02043785, held by WYETH-AYERST CANADA INC., supplied as POWDER FOR SOLUTION for INTRAMUSCULAR ; INTRAVENOUS administration. Health Canada currently lists it as cancelled post market, status dated 13-Aug-1998. This Drug Identification Number is no longer authorized for sale in Canada, so Nexara does not supply it. The record is kept here because buyers still meet the number on old formularies, purchase orders and tender documents; Nexara can help identify an authorized alternative.

How is it supplied and stored?

Pack configuration, storage class and the handling constraints that drive cold-chain planning. One DIN can cover more than one pack size, and the pack — not the DIN — is what gets priced, shipped and invoiced.

Strength on the label500 MG
Dosage formPOWDER FOR SOLUTION
RouteINTRAMUSCULAR ; INTRAVENOUS

Pack detail is kept as a regulatory record. This DIN is no longer authorized for sale in Canada, so Nexara does not quote this pack.

Substance and classification

Active substanceBeta-Lactamase Resistant Penicillins
ATC codeJ01CF
AHFS class08:12.16.12
Biosimilar biologicNo

Health Canada record and identifiers

The regulatory facts straight from the Drug Product Database, plus every identifier form Nexara accepts on a purchase order. A DIN written without its leading zeros is the commonest reason an order line fails to match.

DIN (8-digit, as used in ordering)02043785
DIN (unpadded, as printed on some documents)2043785
Brand nameUNIPEN INJECTION PWS 500MG/VIAL
Generic / active ingredientNAFCILLIN (NAFCILLIN SODIUM) : 500 MG
Market authorization holderWYETH-AYERST CANADA INC.
Health Canada schedulePrescription
ATC codeJ01CF
ATC anatomical main groupJ — Anti-infectives for systemic use
ATC therapeutic subgroupJ01CF
Current statusCANCELLED POST MARKET
Status date13-Aug-1998
Original market date1994-12-31 00:00:00
Status sourceLive Health Canada DPD sync

Verify on the primary sources

Health Canada DPD record

What can be used instead?

Alternatives on every axis a buyer actually considers — the same molecule in another presentation, the same class, an adjacent class, or a fixed-dose combination. Every row is led by the marketed DIN count, because that is what can be bought this week.

2 · Same class — other molecules in ATC J01CF

MoleculeCanadian brandsDINsMarketedSourceable
CloxacillinAPO CLOXI CAP 250MG · APO CLOXI CAP 500MG · APO CLOXI FOR ORAL SOLN 125MG/5ML · CLOXACILLIN · +24 more369Yes
FlucloxacillinFLUCLOX 250 · FLUCLOX 250 CAP 250MG · FLUCLOX 500 CAP 500MG · FLUCLOX-125 PWS 125MG/5ML · +1 more50Not in Canada
Beta-Lactamase Resistant PenicillinsUNIPEN INJECTION PWS 500MG/VIAL10Not in Canada

A molecule with zero marketed DINs cannot be sourced domestically, however many approvals it holds — if one of these sits on a formulary or in an older protocol, that is the line to check.

3 · Adjacent classes in ATC J01C

ATC subgroupMoleculesDINsMarketed
J01CAAmoxicillin · Ampicillin · Ampicillin, Combinations · Bacampicillin · Piperacillin · +3 more20147
J01CRAmoxicillin And Beta-Lactamase Inhibitor · Piperacillin And Beta-Lactamase Inhibitor · Ticarcillin And Beta-Lactamase Inhibitor11344
J01CEBenzathine Benzylpenicillin · Benzathine Phenoxymethylpenicillin · Benzylpenicillin · Combinations · Phenoxymethylpenicillin · +1 more694

Not clinical advice. These tables describe what can be supplied in Canada, not what should be prescribed. Substitution within or across classes is a prescriber and pharmacist decision, and interchangeability is determined provincially.

Can this still be bought in Canada?

No. This Drug Identification Number is cancelled post market in Health Canada's Drug Product Database, so the product is no longer authorized for sale in Canada and Nexara does not supply it. This page is kept as a regulatory record.

If you are looking for a current equivalent, the alternatives above list every product sharing this therapeutic class, with the marketed ones first. Ask us to source an alternative

Ordering questions

Who can buy this from Nexara?

Licensed entities only. Nexara holds Health Canada establishment licence DEL 3-002896-A and ships only to a licensed address. Patients and unlicensed buyers are routed to a partner pharmacy.

Is there a minimum order?

Yes, set per product line and per pack multiple rather than on the order total, so you are never asked to buy a part-pack. The minimum for this line is confirmed with your quote.

What is the lead time?

Confirmed per order at quotation, and it depends on current stock position and whether the product is in shortage.

Why is there no price on this page?

Nexara quotes a delivered Canadian price per order, against a verified licence. Foreign list prices are published on incompatible bases and are not a guide to what any buyer can obtain here, so this page shows which markets list the molecule and on what basis, and nothing more.

Can Nexara supply this for a clinical trial?

Yes — comparator and background-therapy supply, including sourcing from other markets where a Canadian pack will not satisfy the protocol. Clinical trial supply.

Sources and disclaimer

Product data sourced from the Health Canada Drug Product Database. Health Canada status reconciled against the live DPD sync. Last reviewed 10 Sep 2026.

Nothing on this page is medical advice. Nexara Health is a licensed wholesale distributor and supplies licensed entities only; consumer orders are routed to a partner pharmacy. Alternatives tables describe supply, not clinical equivalence.

Health Canada Drug Product Database (DPD), DIN 02043785. Last reviewed 2026-09-10. Nexara Health is a licensed wholesaler and supplies licensed entities only; consumer orders are routed to a partner pharmacy.