What Is MetroGel? Uses, Dosage, and What You Need to Know in 2026

MetroGel is one of the most prescribed topical treatments for rosacea in the United States. If you or someone you know has recently been prescribed it — or if you're researching rosacea treatments — here's everything you need to know about MetroGel in 2026.

What Is MetroGel?

MetroGel is the brand name for metronidazole topical gel, an antibiotic medication applied directly to the skin. It comes in two concentrations: 0.75% (applied twice daily) and 1% (applied once daily). The 1% formulation is the original brand-name MetroGel product marketed by Galderma.

Metronidazole belongs to a class of drugs called nitroimidazoles. While it has antibiotic and antiprotozoal properties when taken orally, the mechanism by which it works for rosacea when applied topically is actually unclear — it's thought to work primarily through anti-inflammatory effects rather than as an antibiotic in this context.

What Does MetroGel Treat?

MetroGel (1% topical gel) is FDA-approved for one indication:

Rosacea (papulopustular type): Specifically, the inflammatory lesions (papules and pustules) associated with rosacea. MetroGel can help reduce the number, size, and severity of these bumps, and may help with associated redness.

Rosacea is a chronic inflammatory skin condition that primarily affects the face. It is sometimes described as "adult acne" because of the red, pimple-like bumps it causes — but it is a distinct condition from acne vulgaris. Rosacea affects an estimated 16 million Americans and tends to affect fair-skinned adults, especially those between the ages of 30 and 60.

The 0.75% formulation has also been used for vaginal bacterial infections in its vaginal gel form (MetroGel-Vaginal), though that is a separate product from MetroGel skin gel and has its own indication.

MetroGel Dosage and How to Use It

Application instructions depend on which strength you've been prescribed:

MetroGel 1%: Apply a thin film once daily to affected areas of the face after cleansing. Wait at least 5 minutes before applying cosmetics.

Metronidazole 0.75% gel: Apply a thin film twice daily (morning and evening) to affected areas after cleansing.

General application tips:

Clean and dry the treatment area before applying MetroGel.

Apply a thin layer — rubbing in gently. Using more does not speed results and increases irritation risk.

Avoid contact with eyes. If eye contact occurs, rinse with water.

Wash hands before and after application.

You may apply cosmetics after waiting 5 minutes.

How Long Does MetroGel Take to Work?

Don't expect overnight results. Most patients begin to see noticeable improvement in their rosacea symptoms after 3–4 weeks of consistent daily use. Maximum results are typically seen at 10–12 weeks. In the pivotal clinical trial for MetroGel 1%, patients treated for 10 weeks experienced a mean reduction of 9.4 inflammatory lesions from baseline, compared to minimal change in the placebo group.

Consistency is key — MetroGel works only as long as you use it. Many patients use it indefinitely for ongoing rosacea control, since rosacea is a chronic condition that may flare when treatment is stopped.

What Comes in a MetroGel Package?

MetroGel 1% comes in 45g and 60g aluminum tubes. A 45g or 60g tube typically lasts one to two months depending on how much of the face is affected and how much product is used per application. Store at room temperature (68–77°F / 20–25°C) away from direct sunlight.

Is MetroGel a Controlled Substance?

No. MetroGel (metronidazole topical gel) is not a controlled substance. It has no DEA scheduling. Any licensed prescriber — including primary care physicians, dermatologists, nurse practitioners, and physician assistants — can prescribe it. It is also available via telehealth without special restrictions.

Brand vs. Generic: Is There a Difference?

Generic metronidazole topical gel is FDA-approved as bioequivalent to brand-name MetroGel. This means the active ingredient (metronidazole) is the same concentration and is therapeutically equivalent. The inactive ingredients (binders, preservatives, etc.) may differ slightly between formulations — this is rarely clinically significant, but some patients with sensitive skin may notice a difference.

If you can't find MetroGel at your pharmacy, medfinder can help you locate it. Also see our guide on MetroGel side effects to know what to expect when you start treatment.