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Drug Safety-related Labeling Changes (SrLC)

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POTIGA (NDA-022345)

(EZOGABINE)

Safety-related Labeling Changes Approved by FDA Center for Drug Evaluation and Research (CDER)

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05/20/2016 (SUPPL-11)

Approved Drug Label (PDF)

Boxed Warning

  • damage to the photoreceptors and vision loss… Macular abnormalities characterized as vitelliform lesions have also been observed.
  • their reversibility are unknown… Reversibility of retinal pigmentary abnormalities and partial resolution of vitelliform lesions has been reported after iscontinuation of ezogabine in some patients.
  • dilated fundus photography,… and optical coherence tomography…

5 Warnings and Precautions

Retinal Abnormalities and Potential Vision Loss

  • photoreceptors and vision loss… In addition, macular abnormalities characterized as vitelliform lesions have been observed; such lesions may also be seen in macular degenerative and dystrophic disorders. These lesions have been identified most consistently with optical coherence tomography imaging. reversibility after drug discontinuation are unknown...
  • Reversibility of retinal pigmentary abnormalities and partial resolution of vitelliform lesions has been reported after discontinuation of ezogabine in some patients.
  • should include visual acuity testing, dilated fundus photography,… and optical coherence tomography. Additional testing may include fluorescein angiograms, perimetry, and electroretinograms.

6 Adverse Reactions

Postmarketing Experience

  • In addition to adverse reactions reported from clinical trials, the following adverse reactions have been identified during postapproval use of POTIGA. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.
  • Acquired vitelliform lesions.