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Pharmaceutical Services Negotiating Committee

Drug Tariff News

Shortage of Isosorbide Mononitrate Tablets 10mg, 20mg and 40mg

Chief Pharmaceutical Officer Keith Ridge issued a letter on 14th February regarding significant shortages relating to all strengths of Isosorbide Mononitrate tablets (10mg, 20mg and 40mg).

In his letter Keith Ridge advises:-

  • The shortage of this medicine may last for several months and current information indicates that normal supply is unlikely to resume before the end of April 2013. 
  • In the absence of normal release isosorbide mononitrate tablets being available, clinicians are advised to consider substitution with a slow release mononitrate preparation (which are not affected by this supply problem).
  • Limited data exists regarding switching from normal release to modified release tablets but initially a mg per mg substitution would be appropriate (i.e. same daily dose overall) in most patients, and where available formulations allow. 
  • Community pharmacists presented with prescriptions for the normal release presentations, who are unable to obtain stock, should refer patients back to their prescriber so that an appropriate alternative can be prescribed.

For access to the full letter please click here

PSNC has confirmed with the Department of Health that contractors will be reimbursed for dispensing an unlicensed medicine against prescriptions for all strengths of Isosorbide Mononitrate (10mg, 20mg and 40mg) Tablets.  However; contractors will need to ensure that such prescriptions have been clearly prescribed as “unlicensed” and then endorsed with the actual price paid minus rebates and discounts (for further guidance on endorsement of specials and unlicensed imports please click here). These prescriptions should be submitted for payment by placing in the red separator.

Posted 28 February 2013

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