Mupirocin, a brand name for a formulation containing essential Mupirocin, is widely used for various health benefits. This guide provides comprehensive information on the uses, dosage, side effects, and mechanism of action of Mupirocin, as well as insights into how long it takes to work. Understanding these aspects can help you make informed decisions about its use and effectiveness.



Mupirocin is an antibiotic approved for topical and systemic use in humans.

Uses For

Mupirocin is commonly used to treat and prevent skin infections caused by bacteria, such as Staphylococcus aureus (MRSA). It is also used to treat superficial, cutaneous, and impetigo bacterial infections, as well as being used in the eradication of nasal carriage of methicillin-resistant organisms.

Mechanism of Action

Mupirocin works by inhibiting bacterial protein synthesis. It affects bacterial cells by binding to bacterial isoleucyl transfer RNA synthetase, resulting in the suppression of protein synthesis by bacterial ribosomes.

How Long Does It Take to Work?

Mupirocin typically begins to work within several days. For skin infections, topical treatment may take up to 2 weeks for infection to fully resolve.


Mupirocin is partially absorbed through the skin into the bloodstream following topical application. The rate and amount of absorption are variable and dependent on the area of application.

Route of Elimination

Mupirocin is primarily eliminated through the bile. It is also metabolized by the liver and excreted in the feces.


The dosage of mupirocin cream or ointment depends on the severity of the skin infection. Adults should typically apply a thin layer of the product to the affected area every 3 to 4 hours, and not exceed 8 doses per day. For nasal application, adults and children over 12 years should apply a single dose of mupirocin cream to the nostrils, not exceeding 4 times daily.


Mupirocin cream or ointment should be applied to the affected area of the skin or inside the nostrils. It should be applied in a thin layer, gently massaged in, and not be bandaged or covered. For treating impetigo, the affected area should also be washed with warm water and soap twice a day.

Side Effects

Common side effects of mupirocin include stinging, burning, itching, and redness at the application site. More serious reactions, such as severe allergic reactions, are possible, but rare. If any of these occur, ask a doctor for advice.


The topical administration of mupirocin is well-tolerated in humans, with side effects generally being limited to localized effects such as skin irritation. While systemic absorption is possible, it is very low and unlikely to result in toxicity.

Precautions & Warnings

Mupirocin should not be used if allergic to any of its components, or if infections that are not caused by bacteria are present. In addition, people who are immunocompromised or taking antibiotics should use caution when applying mupirocin.


Mupirocin has no reported drug interactions, however, other medications may interact with mupirocin. If using any other medicines, it is best to consult with a doctor before using mupirocin.

Disease Interactions

Patients with a history of hypersensitivity reactions to other topical antibiotics may have an increased risk of developing an allergic reaction to mupirocin. Therefore, caution should be exercised when using mupirocin in patients with a known history of sensitivity.

Drug Interactions

Mupirocin has no known drug interactions.

Food Interactions

Mupirocin does not interact with food.

Pregnancy Use

Mupirocin has been classified as category B by the Food and Drugs Administration (FDA) and is generally believed to be safe for use during pregnancy. Although there have been no reported adverse effects in humans used during pregnancy, it is best to consult with a doctor before using during pregnancy.

Lactation Use

Mupirocin is not known to be harmful during lactation, but it is not known if it passes into breast milk and may have an effect on a nursing infant. Therefore, caution should be used when using mupirocin while breastfeeding.

Acute Overdose

The symptoms of an acute overdose from topical administration of mupirocin are not reported. In general, an oral ingestion of mupirocin can lead to gastrointestinal irritation or an allergic reaction.


Mupirocin is contraindicated in individuals who have a known hypersensitivity to any of the components of mupirocin ointment.

Use Direction

Mupirocin ointment or cream should be applied as a thin layer to a clean and dry skin area, and gently massaged into the skin in the direction of hair growth. It should not be put over a bandage or covered. The area should be washed with soap and warm water twice daily if treating impetigo.

Storage Condition

Mupirocin should be stored at room temperature between 15°C to 25°C (59°F to 77°F). It should be kept away from light, heat, and moisture.

Volume of Distribution

The volume of distribution of mupirocin is not known.


The half-life of mupirocin is not known.


The clearance of mupirocin is not known.

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