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Extina Warnings and Precautions

Although many people with seborrhea may benefit from using Extina, this prescription medication may not be appropriate for people who have certain allergies. Other precautions for using Extina safely include warnings for women who are pregnant or breastfeeding. If you develop skin reactions, including reactions to the sun, contact your healthcare provider.

What Should I Tell My Healthcare Provider?

You should talk with your healthcare provider prior to using Extina® (ketoconazole foam) if you:
  • Are pregnant or thinking of becoming pregnant
  • Are breastfeeding
  • Have any allergies, including to foods, dyes, or preservatives.
You should also tell your healthcare provider about all other medications you are taking, including prescription and nonprescription medicines, vitamins, and herbal supplements.

Specific Precautions and Warnings for Extina

Some warnings and precautions to be aware of prior to using this drug include the following:
  • Extina can cause allergic reactions or other skin reactions, including reactions to the sun. Let your healthcare provider know if you have new or different skin problems while using this medication.
  • The foam is flammable. Avoid flames or smoking while applying the medication and immediately afterwards. Do not puncture the can or expose it to high temperatures.
  • Large oral doses of ketoconazole (the active ingredient in Extina) can cause liver problems and hormonal imbalances, although these problems have not been seen with ketoconazole products applied to the skin like Extina.



  • Extina is a pregnancy Category C medication. This means that it may not be safe for use during pregnancy, although the full risks are currently unknown (see Extina and Pregnancy).
  • It is unknown if Extina is safe for use while breastfeeding. Therefore, if you are breastfeeding or plan to start, discuss this with your healthcare provider prior to using this product (see Extina and Breastfeeding).

Extina Drug Information

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