Isosorbide mononitrate (Ismo 40 Retard) 40 mg: Supply issue

Affected product

Healthcare Logistics, the supplier, advised that a shipment of this product was delayed because of issues at the factory. This followed a separate supply issue affecting this product earlier in the year.

Chemical: Isosorbide mononitrate

• Presentation: Tab long-acting 40 mg
• Brand: Ismo 40 Retard
• Pharmacode: 2447355
• Subsidy: $9.80
• Measure / Qty: per 30

Schedule listing for isosorbide mononitrate(external link)

Alternative option: 60 mg long-acting Duride

We have clinical advice that the 60 mg long-acting tablet, either whole or broken in two for a 30 mg dose, may be an appropriate alternative. The 60 mg Duride tablet is scored and dividable.

Half-tablet doses (30mg) can be taken without affecting the modified release properties of Duride, as long as they are not crushed or chewed. 

Medsafe datasheet for Duride 60 mg long-acting [PDF](external link)

This requires a new prescription.

• Presentation: Tab long-acting 60 mg
• Brand: Duride
• Pharmacode: 2202964
• Subsidy: $13.50
• Measure / Qty: per 90 

Resupplied end October 2026

The supplier advises that the next shipment of this product arrived and was released to wholesalers at the end of October 2026. It can take another 2 or 3 weeks to reach pharmacies around the country.

Who to contact

If you have questions about this issue, email enquiry@pharmac.govt.nz

Please include as much information as you can about the product (presentation, brand, Pharmacode) and who your wholesaler is.

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