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Adverse drug events

Study suggests fluoroquinolones do not cause seizures

Researchers conclude that seizures are caused by original infection as opposed to treatment.

MRI scan of a brain suffering from seizure

Source: Shutterstock.com

The increased risk of seizure observed in patients treated with fluoroquinolones is related to the infection rather than treatment, finds new research

Case reports have suggested that fluoroquinolone antibiotics might be associated with seizures, but population-based studies have so far been lacking.

In a study published in Neurology[1] (online, 6 April 2016), researchers conducted a self-controlled case series using data from 6,385 patients in the UK and Hong Kong who were treated with oral fluoroquinolones and experienced seizures between 2001 and 2013.

The results show that the risk of seizure increased by 57% during fluoroquinolone treatment compared with non-exposure periods. But the risk also significantly increased during the 14 days prior to fluoroquinolone exposure.

The researchers, led by Ian Wong from University College London’s School of Pharmacy, say the results show that the increased risk of seizure was related to infection rather than fluoroquinolone treatment. Use of fluoroquinolones should therefore not be precluded in patients with an appropriate indication, they add.

Citation: Clinical Pharmacist DOI: 10.1211/CP.2016.20201039

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Supplementary images

  • MRI scan of a brain suffering from seizure

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