FDA-filed SPL labeling · retrieved through openFDA

Tirbanibulin Topical

Tirbanibulin is a topical microtubule inhibitor used to treat actinic keratosis on the face or scalp.

Brand name Klisyri
Drug class Microtubule Inhibitor
Rx Form 1 Route Topical
Dr. Brian Staiger, PharmD, BCPS
Reviewed by Last reviewed Jul 10, 2026
🧬 Where this information comes from Click to expand

The clinical label records used on this page are FDA-filed Structured Product Labeling (SPL) retrieved through openFDA. We identified 1 clinical label set within the page’s selected clinical scope after exact ingredient or ingredient-combination matching and applicable route/form matching. Forms, routes, brands, labelers, strengths, and NDC product-record counts are built separately from matching FDA National Drug Code Directory records. The linked DailyMed document is a representative official source for verification, not the page’s only clinical source. View the linked label on DailyMed →

At a glance
Linked label effectiveJun 24, 2026
AvailabilityRx
Earliest approval/marketing year 2020
FDA-listed product records 4
Boxed warningNone found in compared labels
How we combine label and product data →
No current FDA shortage listed · checked Sep 15, 2026
Tirbanibulin Topical at a glance The quick version — the full detail is in the Patient Information Guide below.
💊
HelloPharmacist Editorial Team Bottom Line
Klisyri (tirbanibulin) is a once-daily topical ointment applied for just 5 days to treat sun-damaged skin patches (actinic keratosis) on the face or scalp. Local skin reactions like redness, flaking, and crusting are common and expected during treatment. Keep it away from your eyes, wash your hands after every use, and let your doctor know if skin reactions become severe.

📖 Tirbanibulin Topical: Patient Information Guide

A plain-language walkthrough of Tirbanibulin Topical — what it treats, how it works, how it’s taken, side effects, warnings and interactions. Tap any section to expand it.

🎯What it's used for

Tirbanibulin topical is approved to treat actinic keratosis — sun-damaged skin patches that have a risk of progressing to skin cancer.

  • Klisyri is indicated for the topical field treatment of actinic keratosis on the face or scalp in adults — applied across the full treatment area, not just individual spots
⚙️How it works

Tirbanibulin works as a microtubule inhibitor — it targets tiny tube-like structures inside cells that help them divide and replicate. By disrupting these structures, it interferes with the abnormal cell growth that makes up actinic keratosis lesions. The precise chain of events that leads to clearing of the skin patches is not yet fully understood.

💊How it's taken

Klisyri is applied to the skin once a day for 5 days in a row. Use one single-dose packet per application and spread the ointment evenly across the treatment area on your face or scalp.

  • Apply only to the face or scalp — not to other body areas
  • Wash hands with soap and water right after every application
  • Avoid washing or touching the treated area for about 8 hours after applying; after that, a mild soap is fine
  • Do not cover the treated area with bandages or dressings after application

Follow your prescriber's specific instructions, and do not use more or less than directed.

🤒Side effects — in detail

The most common reactions with Klisyri happen right at the treatment site and are usually mild to moderate.

  • Skin redness (erythema)
  • Flaking and scaling
  • Crusting
  • Swelling
  • Itching at the application site
  • Pain or discomfort at the application site
  • Blistering or pustules
  • Skin erosion or open sores

Severe skin reactions — such as deep sores or widespread blistering — are less common but do occur. Contact your doctor if you notice severe or worsening skin changes in the treated area.

⚠️Warnings & precautions
  • Eye irritation: Klisyri can cause eye irritation if transferred to the eyes or the area around the eyes. Wash your hands right after every application. If it gets in your eyes, flush immediately with water and seek medical care.
  • Local skin reactions: Reactions such as redness, scaling, crusting, swelling, blistering, and skin erosion can occur. Severe reactions are possible. Do not start Klisyri if the skin hasn't healed from a previous treatment, procedure, or surgery.
  • Avoid occlusion: Covering the treated area with a dressing or bandage after application increases the risk of irritation.
  • Avoid mouth and lip area: Do not apply near the mouth or lips.
🔀What it interacts with

Based on laboratory studies, Klisyri is not expected to have clinically meaningful interactions with most common medications. No clinical drug interaction studies have been conducted with Klisyri.

  • Lab studies suggest tirbanibulin does not meaningfully affect the levels of drugs processed by common liver enzymes (CYP1A2, 2B6, 2C8, 2C9, 2C19, 2D6, 3A4), so significant interactions through this pathway are not anticipated
  • Similarly, tirbanibulin is not expected to meaningfully affect drugs that rely on common drug transport proteins in the body

This is not a complete list of interactions. Always talk with your doctor or pharmacist before starting, stopping, or changing any medication.

📋Before taking it
  • Pregnancy: There are no safety data in pregnant people. Animal studies showed fetal harm (deaths and malformations) at exposures higher than the recommended human dose. Discuss the risks with your doctor if you are pregnant or planning to become pregnant.
  • Breastfeeding: It is unknown whether tirbanibulin passes into breast milk or affects a nursing infant. Talk to your doctor about the risks and benefits.
  • Children under 18: Safety and effectiveness in pediatric patients have not been established. Actinic keratosis is rarely seen in children.
  • Older adults (65+): Most study participants were 65 or older, and no meaningful differences in safety or effectiveness were observed compared to younger adults, though some older individuals may be more sensitive.
  • Healing skin: Do not use Klisyri if the treatment area is still healing from a previous drug treatment, procedure, or surgery — wait until the skin has fully recovered.
🔬Pharmacokinetics — how your body processes it

When Klisyri is applied to the face or scalp once daily for 5 days, a small amount of tirbanibulin is absorbed through the skin into the bloodstream — but systemic (whole-body) levels remain very low. Peak blood concentrations are typically reached around 6 hours after application. Once in the bloodstream, about 88% of tirbanibulin binds to proteins in the blood. The drug is broken down mainly by liver enzymes (primarily CYP3A4) into inactive metabolites; how the body fully eliminates tirbanibulin has not been completely characterized.

📦How to store it

Store at 20°C-25°C (68°F-77°F), excursions permitted to 15°C-30°C (59°F-86°F) . Do not refrigerate or freeze.

📄 Written from Tirbanibulin Topical’s FDA-approved label information, summarized in plain language with AI, and reviewed by our pharmacy team before publication. Every point is grounded in that labeling — nothing is invented. How we use AI →

3

Supplements & herbs that interact with Tirbanibulin Topical

3 supplements and herbal products have documented interactions with Tirbanibulin Topical in the licensed clinical database we use. Most are manageable — but your pharmacist should know about everything you take, including vitamins and herbals.

Severity mix
  • Moderate · 2
  • Minor · 1
Every supplement checked against Tirbanibulin Topical — ranked by severity The full interaction hub: 2 moderate · 1 minor · every one linked to its full report. Check Tirbanibulin Topical against your exact supplements

Educational information from a licensed clinical database (Natural Medicines) — see our data sources & update cadence. Not medical advice: an interaction being documented does not mean it will happen to you; do not start or stop medications or supplements without professional guidance.

🩺 Pharmacist Counseling Corner

Quick, plain-English answers to the questions patients ask most about Tirbanibulin Topical — the kind of thing our pharmacy team would talk through with you at the counter.

What exactly is actinic keratosis, and why does it need to be treated?
Actinic keratosis (AK) is a rough, scaly patch on the skin caused by years of sun damage. It's not skin cancer itself, but it has the potential to develop into a type of skin cancer called squamous cell carcinoma if left untreated. Treating AK lesions early — with something like Klisyri — helps reduce that risk. Your dermatologist or doctor determined that treating the area is the right step for you.
I only use it for 5 days — is that really enough?
Yes, the approved treatment course for Klisyri is just 5 days of once-daily application. It's applied across the whole affected area of the face or scalp, not just one spot at a time — this is called field treatment. Even though it's a short course, the treatment works on the broader sun-damaged area. Follow the full 5-day course exactly as prescribed, even if your skin looks better (or more irritated) before you finish.
My skin is getting really red and flaky — is that normal?
Yes, local skin reactions like redness, flaking, scaling, and crusting are actually very common with Klisyri and are part of how the treatment affects the area. These reactions are usually mild to moderate and tend to improve after the 5-day course ends. That said, if you develop severe blistering, deep sores, or open skin breaks that concern you, call your doctor — those reactions are less common and should be checked.
Do I need to be careful about getting this near my eyes?
Absolutely — keeping Klisyri away from your eyes and the skin right around your eyes is really important. The ointment can cause eye irritation, and the area around the eyes is particularly sensitive. Always wash your hands thoroughly with soap and water immediately after applying. If you do accidentally get it in your eyes, flush them well with water right away and get medical attention as soon as possible.
Can I use Klisyri if I'm pregnant or breastfeeding?
This is definitely worth discussing with your doctor before using Klisyri. There's no human safety data in pregnancy, and animal studies did show potential harm to developing fetuses at higher doses. For breastfeeding, it's unknown whether the drug passes into breast milk or affects a nursing baby. Your doctor can help you weigh the benefits of treating the actinic keratosis against any potential risks given your situation.
Are there any medications I need to avoid while using Klisyri?
Based on laboratory studies, Klisyri isn't expected to have significant interactions with most common medications — it doesn't meaningfully affect the way your body processes other drugs. That said, no clinical interaction studies have been done in real patients, so it's always a good idea to let your doctor and pharmacist know everything you're taking, just to be safe.
Is Tirbanibulin Topical available over the counter?
Tirbanibulin Topical is dispensed by prescription according to its FDA labeling, so it isn't sold over the counter. Your prescriber and pharmacist will determine if it's appropriate for you.
When was Tirbanibulin Topical first available?
Tirbanibulin Topical has been available in the United States since at least 2020, based on FDA approval history (Drugs@FDA) and product marketing records.

💬 Answers drafted from Tirbanibulin Topical’s FDA-approved label information, summarized in plain language with AI, and reviewed by our pharmacy team before publication. Grounded in that labeling — nothing is made up. How we use AI →

🧰 Keep exploring

💊 How Tirbanibulin Topical comes

Tirbanibulin Topical is available in 1 form. Different forms and brands can have different approved uses, doses, schedules, and directions. Follow the instructions for your exact product, and do not switch forms without guidance from your prescriber or pharmacist.

Topical cream, ointment or gel

On the skin
Brands Klisyri
How this form is used
What it may be used for
  • Klisyri is used for the topical field treatment of actinic keratosis on the face or scalp in adults
Important instructions
  • Klisyri is applied once daily for 5 consecutive days using one unit-dose packet per application
  • Klisyri should be spread evenly to cover the entire treatment area (up to 100 cm²) on the face or balding scalp
  • Wash hands immediately with soap and water after applying Klisyri, and avoid washing or touching the treated area for about 8 hours
  • Keep Klisyri away from the eyes, the skin around the eyes, and the area around the mouth and lips
Available strengths 1 strength
4 FDA-listed product records

📊 Tirbanibulin Topical across the U.S. market

How Tirbanibulin Topical appears in the FDA’s National Drug Code Directory — including its dosage forms, strengths, brand names, manufacturers, and FDA-listed product records. These are directory records, not sales or prescription volume.

1
Dose forms
1
Manufacturers
1
Brand names
4
FDA-listed product records
2020
First marketed

🔍 Compare Tirbanibulin Topical products

A representative set of FDA-listed product records for Tirbanibulin Topical — across manufacturers, strengths, and dosage forms, grouped by form with each product’s manufacturer and how the FDA approved it. The same medicine may be made and packaged by different companies, so a single drug can have many directory entries. (It’s also why a refill can look different — a new shape, color, or box — even though it contains the same medication.)

Strength Route Manufacturer / Labeler Category Details
💊Topical cream, ointment or gel
10 mg/g Topical Almirall, LLC × 4 listings NDA View NDC →

Showing 4 of 4 products — FDA National Drug Code Directory. See every product, package size and price: browse all 4 Tirbanibulin Topical NDCs →

RxNorm Concept Web — From Ingredient to Every Form and Strength

This page starts with one ingredient concept (IN). The branches below show its dose-form concepts (SCDF), then the available clinical drug and strength concepts (SCD). Combination products remain separate concepts with their own pages.

Ingredient (IN) Tirbanibulin Topical RxCUI 2471078 1 dose form · 1 strength
  1. Dose form (SCDF) Topical Ointment RxCUI 2471094 In current FDA listings
    Clinical drug / strength (SCD) 0.01 MG/MG RxCUI 2471095

Look up RxCUI 2471078 in the RxCUI Atlas →

RxNorm is the U.S. National Library of Medicine’s normalized drug vocabulary. Its concept hierarchy can include forms that are not currently marketed; the status on each branch compares that concept with current FDA listings. RxCUIs identify vocabulary concepts, not individual packages or manufacturers.

🏷️ Sold under these brand names

Klisyri

🏭 Manufacturers & labelers

Almirall, LLC 4

RxNorm drug class

Tirbanibulin Topical belongs to the Microtubule Inhibitor class.

Pharmacologic class Microtubule Inhibitor
Drug family (ATC) Other chemotherapeutics

Classified by RxNorm RxClass — the U.S. National Library of Medicine's standardized drug-classification service (Established Pharmacologic Class from the FDA, the ATC drug family from the WHO, and mechanism of action). Reference only, not medical advice.

🔬 Where this comes from

Core label, product, RxNorm, safety, and utilization data on this page come from the sources identified below. AI-written, editorial, and licensed sections are labeled separately.

📄
FDA-filed drug labels (SPL) Uses, dosing, warnings & side effects from SPL records retrieved through openFDA; the linked representative set can be verified on DailyMed. ✓ Linked label effective Jun 24, 2026
🏭
Forms, brands & labelersAggregated from ingredient-matched FDA National Drug Code Directory product records for Tirbanibulin Topical.
📈
Real-world reportsThe FDA Adverse Event Reporting System (FAERS), served through openFDA.
🚨
Recalls & shortagesopenFDA drug-enforcement reports and the FDA drug-shortage database.
🧾 Clinical label set — FDA-filed SPL labels retained for Tirbanibulin Topical after exact ingredient or ingredient-combination matching and applicable route/form matching
Clinical labels in scope
1
NDC products indexed
4
Distinct labelers/manufacturers represented
1
Linked representative label
Almirall, LLC
Linked label effective
Jun 24, 2026
Composite sections available
20
Linked SPL Set ID
589c8de8-b773-4d47-b60c-48471806cccc
Linked SPL Document ID
f94fb2ea-6246-4279-8819-f9b6d038e47c
Open the linked representative label on DailyMed ↗

How we combine label and product data

HelloPharmacist combines public FDA and NLM records; we don’t author the underlying clinical facts. We identified 1 FDA-filed SPL label set within the page’s selected clinical scope after exact ingredient or ingredient-combination matching and applicable route/form matching. The representative label is the starting point for the displayed reference monograph; the 12 largest stored in-scope SPL records, which may include that representative, are compared section by section, and the longest available version of each section is retained. Forms, routes, brands, labelers, product-listed strengths, and product-record counts are aggregated separately from ingredient-matched FDA NDC Directory records; package records listed above are associated with the linked SPL; and the normalized concept hierarchy comes from NLM RxNorm.

Where a section is identified as AI-written, its plain-language text is generated from bounded label evidence. New draft drug pages remain in the admin review queue before first publication. Almirall, LLC is the representative DailyMed label linked for verification and dates; it is not the sole source used for the page.

This is general education, not medical advice — always consult your doctor or pharmacist about your medications and any medical condition. For the exact wording of the linked representative label, view that label on DailyMed; some displayed composite sections may come from other in-scope SPL labels. Learn how we use AI and our data sources & update cadence.