What are the 10 contraindications of povidone-iodine?

Generally speaking, there is no such thing as "ten major contraindications" for povidone-iodine. However, the following precautions should be observed during use: avoid internal administration, exposure to sunlight, contraindicated for individuals allergic to iodine, should not be used simultaneously with mercuric bromide red solution, use with caution on open wounds, etc. Detailed explanations are as follows:

1. Do not ingest: Povidone-iodine is an antiseptic medication specifically designed for external use and must never be ingested. Accidental ingestion may cause adverse reactions, such as damage to the digestive system or other serious health problems.

2. Avoid exposure to sunlight: Povidone-iodine should be stored in a cool, dark place, away from direct sunlight. Exposure to sunlight may cause chemical reactions in the solution, thereby reducing or eliminating its disinfecting effectiveness.

3. Contraindicated for those allergic to iodine: Individuals who are allergic to povidone-iodine or iodine-containing substances should avoid using it. Application may cause allergic reactions, such as redness, itching of the skin, or even skin inflammation or more severe allergic responses.

4. Should not be used simultaneously with mercuric bromide red solution: Combining povidone-iodine with mercuric bromide red solution may produce toxic mercuric iodide, which not only affects the disinfecting effectiveness but may also damage the skin and mucous membranes. Therefore, these two disinfectants should not be used together.

5. Use with caution on open wounds: Using povidone-iodine to disinfect large open wounds may irritate the wound and affect the healing process. In such cases, consult a doctor to select a more appropriate disinfection method, such as cleaning the wound with normal saline, and using other suitable disinfectants or medications as appropriate.

When using povidone-iodine, follow medical advice or instructions provided with the product to ensure safe and effective disinfection.