Supply Issue - Isosorbide mononitrate (Ismo 40 Retard) 40mg

Due to an increase in demand and shipping delays because of the conflict in the Middle East, stock of Ismo 40 Retard is running low.

Resupply of Isosorbide mononitrate 40 mg (Ismo 40 Retard) is expected by the end of April; once stock is released it can take a further 1-2 weeks for stock to distribute through the supply chain. If pharmacies are unable to obtain additional stock before then, affected patients may require a new prescription for an alternative treatment.

We have clinical advice that the isosorbide mononitrate 60 mg long-acting tablet (Duride), 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. 

Further information will be added to our webpage as updates become available – see isosorbide mononitrate (Ismo 40 Retard) 40 mg: Supply issue.

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If you have any questions regarding this supply issue, please contact enquiry@pharmac.govt.nz.

Ngā mihi,

Felicity | Senior Advisor Implementation

Pharmac | Te Pātaka Whaioranga

PO Box 10-254, Wellington 6140 | Level 9, 40 Mercer Street, Wellington 6011P: 0800 660 050 | www.pharmac.govt.nz