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Buy Lonsurf Online
(Trifluridine/Tipiracil Hydrochloride)

What is Lonsurf?

What is Lonsurf?

Lonsurf (trifluridine/tipiracil) is a medicine used for the treatment of adult patients with certain advanced colorectal cancers that have spread to other parts of the body. It is approved for the treatment of metastatic colorectal cancer (MCRC) and metastatic gastric cancer or gastroesophageal junction adenocarcinoma in patients whose disease has progressed after standard treatments. Lonsurf is taken by mouth and is used under the supervision of an oncology healthcare provider.

Lonsurf is typically prescribed when other chemotherapy or targeted therapies have not worked or are no longer effective, like fluoropyrimidine, oxaliplatin, and irinotecan‑based chemotherapy and anti-VEGF agents, and/or anti-EGFR agents. It may be used alone or alongside other cancer treatments, depending on a patient’s medical history, prior therapies, and overall health. Treatment with Lonsurf focuses on slowing cancer progression and improving overall survival rather than curing colon cancer.

Order Lonsurf online today and save!

Purchase Lonsurf from Universal Drugstore today and save!

Select your dosage:

  • All Strength's
  • 15mg/6.14mg
  • 20mg/8.19mg

Lonsurf brand

Lonsurf 
15mg/6.14mg

Prescription Required
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Prescription Required
Product of Australia

Product of Australia

Lonsurf 
20mg/8.19mg

Prescription Required
Select Quantity
Prescription Required
Product of Australia

Product of Australia

Trifluridine/Tipiracil Hydrochloride (generic Lonsurf)

What are generics?

Trifluridine/Tipiracil Hydrochloride 
15mg/6.14mg

Prescription Required
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Prescription Required
Product of India

Product of India

Marketed as Tipanat in India.

Trifluridine/Tipiracil Hydrochloride 
20mg/8.19mg

Prescription Required
Select Quantity
Prescription Required
Product of India

Product of India

Marketed as Tipanat in India.

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Important information about Lonsurf

Lonsurf works by stopping cancer cells from making new DNA, so they can’t grow and divide. It contains two drugs: trifluridine (a nucleoside analog that gets incorporated into cancer cell DNA, disrupting its function and inhibiting tumor growth), which gets built into cancer-cell DNA and disrupts it, and tipiracil (a thymidine phosphorylase inhibitor), which prevents trifluridine from breaking down too quickly so it stays active in the body longer. Together, they slow or stop the growth of cancer cells, while also affecting some healthy fast-growing cells, which is why side effects like low blood counts can occur.

Follow all directions given to you by your doctor and read all documents provided, including the full Prescribing Information, FDA-Approved Product Labeling, Instructions for Use, and Medication Guide before using Lonsurf. However, the following is a synopsis of the general guidelines for the use of Lonsurf:

  • Lonsurf is taken by mouth as tablets.
  • It is usually taken twice daily after meals.
  • Treatment is given in cycles, commonly on days 1 through 5 and days 8 through 12 of a 28-day cycle.
  • Tablets should be swallowed whole with water and should not be crushed or chewed.
  • Your dose is based on body surface area and may be adjusted based on blood cell counts and side effects.
  • If you miss a dose, do not take an extra dose to make up for it. Take the next dose at the scheduled time.
  • Blood tests are required before starting treatment and during each cycle to monitor white blood cells, red blood cells, and platelets. Your healthcare provider may delay treatment or reduce the dose if blood counts are too low.

Some mild or most common side effects of Lonsurf seen in clinical trials as compared to placebo include:

  • Tiredness or weakness.
  • Nausea or vomiting.
  • Decreased appetite.
  • Diarrhea.
  • Abdominal pain.

Some individuals may experience serious side effects while using Lonsurf. These side effects may require immediate medical attention. If you experience any of the following, contact your healthcare provider or seek emergency medical help:

  • Neutropenia is a low white blood cell count that increases infection risk.
  • Anemia, which may cause shortness of breath, dizziness, or fatigue.
  • Thrombocytopenia may increase the risk of bleeding or bruising.
  • Fever or signs of infection, such as chills or sore throat.
  • Severe weakness or unusual bleeding.
  • Fever or infection risk due to low neutrophil levels.

These are not all of the possible side effects of Lonsurf. You should always seek medical advice from your healthcare provider for any questions or concerns about your medical condition or treatment. Read all patient information, medication guides, or drug information sheets that come with this medication. You can also report adverse effects to the U.S. Food and Drug Administration at www.fda.gov/medwatch or 1-800-FDA-1088.

Before starting Lonsurf, it is crucial to discuss any existing health conditions with your healthcare provider. You should be sure that your healthcare provider is aware of all your medical conditions, including if you have:

  • A history of low blood cell counts.
  • Liver disease or abnormal liver function tests.
  • Kidney disease.
  • Active infections or frequent infections.
  • Poor performance status or significant weight loss.
  • Your healthcare provider will closely monitor blood cell counts and overall health throughout treatment. Dose delays or reductions may be necessary to reduce the risk of life-threatening complications.

Boxed Warning

Lonsurf has a boxed warning for severe and life-threatening bone marrow suppression. Treatment with Lonsurf can cause neutropenia, anemia, and thrombocytopenia. Blood cell counts must be monitored before and during treatment, and therapy should not be started unless blood counts are adequate.

There are no absolute contraindications listed for Lonsurf. However, it should not be used in patients with severe bone marrow suppression at the start of treatment. Your healthcare provider will determine if Lonsurf is appropriate based on blood test results and overall health.

Lonsurf does not work immediately. In clinical trials, benefits such as progression-free survival and overall survival were measured over months of treatment. The goal is to slow cancer growth and spread rather than produce rapid symptom relief. Your healthcare provider will assess treatment response through scans, blood tests, and clinical evaluation.

When Lonsurf is taken with other prescription drugs, over-the-counter medications, vitamins, and supplements, it may change how they work or increase the frequency or severity of side effects. Make sure that you tell your healthcare professional about anything that you are taking to avoid any negative drug interactions, including:

  • Other chemotherapy agents may increase bone marrow suppression.
  • Medications that affect blood cell production may raise the risk of infection or bleeding.
  • Supplements that may interfere with blood counts or immune function.
  • Bevacizumab.

Drug interactions mainly increase the risk of hematologic toxicity and should be managed by your oncology healthcare provider.

Lonsurf tablets are available in fixed-dose combinations containing trifluridine and tipiracil. Dosing is individualized based on body surface area and adjusted as needed according to blood test results and tolerability.

It should be stored at room temperature, away from the reach of children or pets.

Lonsurf is manufactured by Taiho Oncology.

No. There is currently no generic version of Lonsurf available.

Do not stop taking Lonsurf without speaking to your healthcare provider. Treatment may be stopped or adjusted if severe side effects occur or if the cancer no longer responds to therapy. Your oncology team will guide any changes to treatment.

Lonsurf can cause harm to an unborn baby. Effective contraception is recommended during treatment and for at least 6 months after the final dose.

Breastfeeding is not recommended during treatment with Lonsurf and for 1 day following the final dose due to the potential for serious adverse reactions in a breastfed child.

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Important information about buying Lonsurf from UniversalDrugstore™

Once you complete your order, we process, verify, and dispatch your medication. You’ll receive email updates at each stage, including tracking details once your order ships. If any additional documentation is needed (such as a valid prescription), we’ll contact you promptly. Once approved, your order is charged and delivered directly to your doorstep.

Orders are typically processed within 1–3 business days once all required documents are received and approved. Standard delivery times range from 10–18 business days, depending on your location.

Yes! Once your medication ships, you will receive an email with tracking information so you can monitor your shipment every step of the way.

Our Customer Care team is available 24/7 to assist with any order-related concerns or questions. If you experience delays, missing items, or need support, contact us using the details provided in your confirmation email.

All orders are shipped in discreet, plain packaging to protect your privacy. Medications are securely packaged to prevent damage and ensure they arrive in top condition.

Yes. We use cold-chain shipping methods to safely transport temperature-sensitive medications, ensuring they maintain proper storage conditions throughout delivery.

Shipping costs vary depending on your location and shipping method. Free shipping promotions may be available—check the checkout page for the latest offers. Orders above $100 going to a US destination will receive free shipping.

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Universal Drugstore does not bill private health insurance directly, but we provide a detailed invoice that you can submit to your insurer for possible reimbursement. Many insurers will accept Universal Drugstore’s documents, but if you have any questions, check with your insurance company prior to purchasing.

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Universal Drugstore offers many generic alternatives that provide the same active ingredients at a lower cost. Search for your medication and compare pricing for generic vs. brand-name options. Generic availability depends on the medication.

If your medication requires a prescription, you must upload it online, via email, or fax. Over-the-counter (OTC) medications do not require a prescription. All prescription medication purchases require a valid and approved prescription. The Universal Drugstore customer care team can contact your doctor directly to get your prescription, and ensure all information is up to date.

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Yes! If your prescription includes refills, you can reorder quickly by logging into your account and selecting your medication for a hassle-free refill process. Always refill your medication proactively and ontime, to ensure you do not run out of important medication.

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The information, including but not limited to, text, graphics, images and other material contained on this website are for informational purposes to increase health awareness only. No material on this site is intended to be a substitute for professional medical advice, diagnosis or treatment. 



Always seek the advice of your physician or other qualified health care provider with any questions you may have regarding a medical condition or treatment and before undertaking a new health care regimen, and never disregard professional medical advice or delay in seeking it because of something you have read on this website.