Mupirocin is the most widely recommended prescription cream for impetigo and has been the first-line topical treatment for decades. For most cases of impetigo, whether in children or adults, a prescription topical antibiotic applied twice daily for five days clears the infection effectively. The specific cream your doctor recommends will depend on the extent of your sores, your age, and whether the bacteria involved might be resistant to standard treatments.
First-Line Prescription Options
Infectious disease guidelines recommend treating both bullous and nonbullous impetigo with either mupirocin or retapamulin applied twice daily for five days. Both carry strong recommendations backed by high-quality evidence. Mupirocin has been the go-to for years and is available as both a cream and an ointment. It works by blocking the bacteria’s ability to build proteins, effectively killing the staph and strep organisms that cause impetigo.
Retapamulin works through a different mechanism, targeting bacterial protein production at three separate points. This makes it less likely to trigger resistance. In clinical trials, retapamulin achieved clinical success rates around 86% to 90%, comparable to oral antibiotics taken for twice as long. It’s approved for people nine months and older, and in children the treatment area shouldn’t exceed about 2% of total body surface area.
A newer option, ozenoxacin 1% cream, is FDA-approved for adults and children as young as two months. It’s applied as a thin layer twice daily for five days, the same schedule as the other topical options. In clinical trials reviewed by the FDA, ozenoxacin outperformed placebo and showed success rates comparable to retapamulin. It belongs to a different antibiotic class, which makes it potentially useful when resistance to mupirocin is a concern.
Do Over-the-Counter Creams Work?
For very minor impetigo, a small patch that hasn’t spread, over-the-counter antibiotic ointments may be worth trying. The Mayo Clinic notes that minor infections limited to one area can sometimes respond to OTC antibiotic creams. However, impetigo is caused by bacteria that are often more aggressive than what these products are designed to handle. If you don’t see improvement within two to three days, or if sores are spreading, a prescription cream will be significantly more effective.
The gap between OTC and prescription options is meaningful. Prescription mupirocin was specifically developed to target the staph bacteria responsible for most impetigo cases. OTC antibiotic ointments were designed for minor cuts and scrapes, not active bacterial skin infections. Most doctors will go straight to a prescription topical rather than waiting for an OTC product to fail.
When You Need Oral Antibiotics Instead
Topical creams work well for localized impetigo, but oral antibiotics become the better choice in certain situations. If you have numerous sores spread across different areas of your body, a cream applied to each spot becomes impractical and less reliable. Oral treatment is also recommended during outbreaks affecting multiple people, such as in daycare settings, because it helps reduce transmission more effectively than topical therapy alone.
Ecthyma, a deeper form of impetigo that extends past the skin’s surface into underlying tissue, also requires oral antibiotics. A typical oral course runs seven days with a drug active against staph bacteria. If lab cultures show only streptococcal bacteria, penicillin is the standard oral choice.
Growing Resistance to Mupirocin
One reason newer options like ozenoxacin matter is that mupirocin resistance is climbing. A study tracking resistance trends in Berlin from 2018 to 2025 found that mupirocin-resistant staph rates reached 9.2% among staph-positive patients in the first half of 2025, up from lower levels in earlier years. Resistance rates varied by patient population, ranging from about 0.5% in general hospital patients to over 3% in patients returning from tropical regions.
These numbers are still relatively low overall, which is why mupirocin remains first-line. But if your impetigo isn’t improving after a few days on mupirocin, resistance could be the reason. Your doctor may switch you to retapamulin or ozenoxacin, which target bacteria through different pathways and remain effective against many mupirocin-resistant strains.
How to Apply Topical Impetigo Cream
Proper application makes a real difference in how quickly the infection clears. Before putting on any antibiotic cream, gently wash the affected skin with warm soapy water to remove the honey-colored crusts that form over impetigo sores. These crusts trap bacteria underneath and prevent the medication from reaching the infection. You don’t need to scrub hard. Dabbing with a warm, soapy cloth a few times a day loosens crusts and drainage effectively.
After cleaning, apply a thin layer of the prescribed cream directly to the sores. Wash your hands thoroughly before and after application to avoid spreading the infection to other parts of your body or to other people. Keep doing this twice daily for the full five days even if the sores start looking better after two or three days. Stopping early gives surviving bacteria a chance to regrow and potentially develop resistance.
Choosing the Right Cream for Children
Impetigo is most common in young children, so age limits on these medications matter. Ozenoxacin has the youngest approval, cleared for infants two months and older. Retapamulin is approved starting at nine months. Mupirocin is widely used in children as well, though specific age cutoffs vary by formulation.
For young children, keeping the treatment area limited is important. Retapamulin, for example, shouldn’t be applied to more than 2% of a child’s total body surface area. If your child has widespread sores covering a large area, your pediatrician will likely recommend oral antibiotics instead of trying to cover everything with cream. The same applies if sores keep appearing in new spots despite topical treatment, which suggests the infection is spreading faster than the cream can control it.