Fusidic Acid – What It Is and How It Works

Fusidic acid is a cheap, locally‑acting antibiotic that comes from a fungus that lives on Staphylococcus bacteria. It stops the bacteria from making proteins, which means they can’t grow or spread. Because it stays on the skin and doesn’t get into the bloodstream much, it’s perfect for treating shallow infections without a lot of side effects.

Common Uses and Application Tips

Most people use fusidic acid as a cream or ointment (usually 2 % strength) for things like impetigo, infected eczema, minor cuts, and facial acne that’s turned red and pus‑filled. Apply a thin layer to clean, dry skin two to three times a day and cover with a bandage if the wound is open. For eye drops, only a few drops in the affected eye are needed, but follow the doctor’s schedule exactly.

Off‑label, some dermatologists recommend fusidic acid for stubborn acne or for early‑stage MRSA skin infections when other options aren’t available. The key is to start treatment early, keep the area clean, and finish the full course – even if the rash looks better after a couple of days.

Safety, Side Effects, and Resistance

Side effects are usually mild: a little burning, itching, or redness where you put the cream. If you notice a rash that spreads or gets worse, you might be allergic, so stop using it and see a pharmacist or doctor. Systemic problems are rare because the drug doesn’t absorb well through intact skin.

Resistance can happen if you use fusidic acid too often or for the wrong condition. Bacteria learn to pump the drug out of their cells, making it useless. To keep it working, only use it when a healthcare professional says it’s needed, and don’t share your tube with anyone else.

When buying fusidic acid, look for products that list the concentration (2 % is standard) and check the expiration date. Store the cream in a cool, dry place and keep the lid tightly closed. If the cream changes color or smells weird, throw it away – it might have broken down.

Bottom line: fusidic acid is a simple, effective tool for everyday skin infections, but it works best when you follow the directions, watch for irritation, and avoid over‑use. Use it responsibly and it will stay a handy option in your medicine cabinet for years to come.