Within each system organ class, the adverse drug reactions ranked by frequency, with the most frequent reactions first. Within each frequency grouping, adverse drug reactions are presented in order of decreasing seriousness. In addition, the corresponding frequency category for each adverse drug reaction is based on the following convention (CIOMS III): very common (>1/10); common (≥1/100 to <1/10); uncommon (≥1/1,000 to <1/100); rare (≥1/10,000 to <1/1,000); very rare (<1/10,000).
The following undesirable effects include those reported with Almiral tablets and/or other pharmaceutical forms of diclofenac, with either short-term or long-term use. (See table.)
![](https://mpfshstrg.blob.core.windows.net/mpf-uat-common-resources/Images/monograph/table.gif)
Description of selected adverse drug reactions: Arteriothrombotic events: Meta-analysis and pharmacoepidemiological data point towards a small increased risk of arteriothrombotic events (for example myocardial infarction) associated with the use of diclofenac, particularly at a high dose (150 mg daily) and during long-term treatment (see PRECAUTIONS).
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