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Extina Foam (Generic Ketoconazole Topical)

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Why is this medication prescribed?

Extina Foam is prescribed primarily to treat fungal skin infections, particularly those caused by dermatophytes, yeasts, and other fungi. The active ingredient in Extina Foam, ketoconazole, is an antifungal medication. It works by inhibiting the growth of fungi, thereby eliminating the infection.

Some of the specific conditions that Extina Foam is commonly prescribed for include:

  • Seborrheic dermatitis: A common skin condition that causes redness, itching, and flaking, usually affecting areas rich in oil glands, such as the scalp, face, and upper chest.
  • Pityriasis (tinea) versicolor: A fungal infection of the skin that results in patches of discolored, scaly skin, often appearing on the chest, back, and upper arms.
  • Tinea corporis (ringworm): A fungal infection that affects the skin on the body, typically presenting as circular or ring-shaped rashes with red, scaly borders.
  • Tinea cruris (jock itch): A fungal infection that affects the groin and inner thighs, causing itching, redness, and discomfort.
  • Tinea pedis (athlete’s foot): A fungal infection that affects the skin between the toes and the soles of the feet, causing itching, redness, and peeling skin.

How should this medicine be used?

Extina Foam should be used according to the instructions provided by your healthcare provider or as indicated on the medication label. Here are general guidelines for using Extina Foam:

  • Wash the affected area(s) of the skin with a mild soap and water. Pat the skin dry with a clean towel before applying the foam.
  • Shake the can of Extina Foam well before each use to ensure the medication is properly mixed.
  • Hold the can upright and dispense a small amount of foam onto your fingertips. The amount needed will depend on the size of the affected area(s), as directed by your healthcare provider.
  • Gently massage the foam into the affected area(s) until it disappears. Ensure that the affected skin is completely covered with the foam.
  • Wash your hands thoroughly after applying the foam, unless the treated area is on your hands.
  • Avoid covering the treated area with bandages or dressings unless instructed otherwise by your healthcare provider.
  • Allow the foam to dry completely before dressing or applying any other skincare products to the treated area(s).
  • Use Extina Foam once daily unless otherwise directed by your healthcare provider. It’s typically applied at the same time each day for the duration of the prescribed treatment period.
  • Continue using Extina Foam for the full course of treatment, even if your symptoms improve before then. Stopping prematurely may allow the infection to return.
  • If you accidentally get Extina Foam in your eyes, nose, mouth, or on mucous membranes, rinse thoroughly with water.

If you have any questions or concerns about how to use Extina Foam, it’s important to consult your healthcare provider or pharmacist for guidance. They can provide personalized instructions based on your specific condition and medical history.

Other uses for this medicine

Extina Foam contains ketoconazole, an antifungal medication primarily used to treat fungal skin infections. While its primary use is for treating conditions like seborrheic dermatitis, pityriasis versicolor, and certain types of fungal skin infections, there may be some off-label or alternative uses for Extina Foam. However, it’s essential to use it only as prescribed by your healthcare provider.

What special precautions should I follow?

Special precautions should be taken when using Extina Foam:

  • Allergies: Inform your healthcare provider if you are allergic to ketoconazole or any other ingredients in Extina Foam. Allergic reactions can include rash, itching, swelling, severe dizziness, or trouble breathing.
  • Pregnancy and breastfeeding: Let your healthcare provider know if you are pregnant, planning to become pregnant, or breastfeeding. The safety of using ketoconazole during pregnancy and breastfeeding is not well established, and your healthcare provider will weigh the potential risks and benefits before prescribing it.
  • Medical conditions: Inform your healthcare provider about any medical conditions you have, especially liver disease. Ketoconazole may affect liver function, so caution is needed if you have liver problems.
  • Drug interactions: Ketoconazole can interact with certain medications, including some commonly used medications such as certain statins, anticoagulants, and some antidepressants. Make sure to inform your healthcare provider about all the medications you are taking, including prescription, over-the-counter, vitamins, and herbal supplements.
  • Avoid contact with eyes and mucous membranes: Avoid getting Extina Foam in your eyes, nose, mouth, or on mucous membranes. If accidental contact occurs, rinse thoroughly with water.
  • Avoid covering treated areas excessively: While it’s generally fine to apply Extina Foam to the affected skin, avoid using occlusive dressings or covering the treated area excessively, unless directed by your healthcare provider.
  • Avoid sunlight exposure: Ketoconazole may increase your skin’s sensitivity to sunlight, so it’s advisable to minimize sun exposure and use sunscreen when outdoors.

Always follow your healthcare provider’s instructions and read the medication label carefully before using Extina Foam. If you have any concerns or experience adverse effects while using Extina Foam, contact your healthcare provider promptly.

What special dietary instructions should I follow?

As for special dietary instructions, there are no specific dietary restrictions associated with Extina Foam. However, it’s always advisable to maintain a balanced diet and avoid excessive alcohol consumption, especially if you have liver disease or are taking medications that may interact with alcohol.

What should I do if I forget a dose?

If you forget to apply a dose of Extina Foam, apply it as soon as you remember. However, if it is almost time for your next scheduled dose, skip the missed dose and continue with your regular dosing schedule. Do not apply extra foam to make up for the missed dose. If you have any concerns or questions about missed doses, consult your healthcare provider or pharmacist for guidance.

What side effects can this medication cause?

Extina Foam, containing ketoconazole as its active ingredient, may cause some side effects, although not everyone experiences them. Common side effects of Extina Foam may include:

  • Skin irritation: This can manifest as redness, itching, burning, or stinging at the application site.
  • Dry skin: Some individuals may experience dryness or peeling of the skin, especially in the treated area.
  • Rash: Skin reactions such as rash or hives may occur in some people using Extina Foam.
  • Hair discoloration or loss: Ketoconazole can sometimes cause changes in hair color or texture, or rarely, temporary hair loss.
  • Eye irritation: Avoiding contact with the eyes is important, as accidental contact may cause irritation.
  • Allergic reactions: In rare cases, allergic reactions to ketoconazole may occur, leading to symptoms such as rash, itching, swelling, severe dizziness, or trouble breathing. Seek medical attention if you experience any signs of an allergic reaction.
  • Liver problems: Although less common, ketoconazole may cause liver problems in some individuals. Symptoms of liver problems may include yellowing of the skin or eyes (jaundice), dark urine, persistent nausea or vomiting, abdominal pain, or unusual tiredness. If you experience any of these symptoms, contact your healthcare provider immediately.

It’s important to note that this is not a complete list of all possible side effects of Extina Foam. If you experience any other unusual symptoms or side effects while using Extina Foam, it’s essential to consult your healthcare provider for further evaluation and guidance. They can provide personalized advice based on your individual medical history and current condition.

What should I know about storage and disposal of this medication?

Storage and disposal of Extina Foam:


  • Store Extina Foam at room temperature, away from heat, moisture, and direct sunlight.
  • Keep the container tightly closed when not in use.
  • Do not puncture or incinerate the container, even if it’s empty.
  • Keep Extina Foam out of reach of children and pets.


  • Dispose of unused or expired Extina Foam properly according to local regulations or as instructed by your healthcare provider or pharmacist.
  • Do not flush medications down the toilet unless instructed to do so. Proper disposal helps prevent environmental contamination and potential harm to others.

In case of emergency/overdose

  • In case of accidental ingestion of Extina Foam or if you suspect an overdose, seek immediate medical attention or contact a poison control center.
  • Symptoms of overdose may include nausea, vomiting, abdominal pain, dizziness, headache, and changes in heart rate or rhythm.

What other information should I know?

  • Keep all appointments with your healthcare provider for follow-up evaluations during treatment with Extina Foam.
  • Inform your healthcare provider if your condition does not improve or worsens after using Extina Foam.
  • Avoid using Extina Foam for longer than prescribed or in larger amounts than recommended by your healthcare provider.
  • Do not share Extina Foam with others, even if they have similar symptoms, as it may not be suitable for their condition.
  • If you have any questions or concerns about Extina Foam or your treatment regimen, consult your healthcare provider or pharmacist for clarification and guidance.

By following these guidelines, you can ensure the safe and effective use of Extina Foam while minimizing the risk of adverse effects and ensuring proper storage and disposal practices.

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