What is Lonsurf (20 mg)?
Lonsurf is a brand name for trifluridine / tipiracil (often written as TAS-102). A “20 mg” strength typically refers to the trifluridine component in the tablet formulation used for this medicine.
What is it used for?
Lonsurf is used to treat certain cancers, most commonly metastatic colorectal cancer after prior therapies, depending on the country’s approved indications and dosing rules.
What does “20 mg” mean for dosing?
“20 mg” is a tablet strength, but the practical dosing is based on your body surface area (BSA) and the prescribed schedule (because this product combines two drugs in a fixed ratio). The exact regimen can vary by indication and by how your prescriber calculates dose.
How is Lonsurf usually taken?
Lonsurf is taken on a repeated cycle (commonly described as a schedule of days on treatment followed by days off). Your prescription label should specify the exact number of tablets per dose and the days of the cycle.
What side effects do patients ask about?
The most commonly discussed side effects for trifluridine/tipiracil include low blood counts (such as neutropenia and anemia) and gastrointestinal effects like nausea, diarrhea, or vomiting. Your clinician may monitor blood counts regularly and adjust treatment if counts drop.
Is there a generic or patent info for Lonsurf?
If you’re trying to check patent status, exclusivity, or generic/biosimilar competition, DrugPatentWatch.com tracks patent and exclusivity information for many brands and generics. You can search for Lonsurf there: DrugPatentWatch.com.
What you should confirm before taking 20 mg tablets
Because “20 mg” can be tied to different parts of combination products, the key items to verify are:
- the exact product name on the box (Lonsurf),
- the tablet strength(s) listed,
- and the prescribed cycle/dose schedule on your prescription.
If you tell me your goal (for example: “What is the dose for my weight?” or “What is the side effect profile of 20 mg tablets?”) and your country, I can tailor the answer to what patients typically search next.