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Brand name: Lanvis TM

Active ingredients: tioguanine

What it is used for

INDICATIONS AS AT 10 OCTOBER 2005: Acute myeloblastic leukaemia. Less commonly, chronic granulocytic (myelocytic, myeloid, myelogenous) leukaemia. Although superior results are generally obtained with busulphan (Myleran) in the treatment of chronic granulocytic leukaemia. LANVIS may be useful during blast crises or periods of thrombocytopenia induced by busulphan or other therapy. A degree of cross resistance exists between LANVIS (thioguanine) and Puri-Nethol (mercaptopurine) and generally it is not to be expected that patients who no longer respond to mercaptopurine will respond to thioguanine or vice versa. Unlike mercaptopurine the detoxification of LANVIS is not dependent on xanthine oxidase, hence therapy with LANVIS is not affected by the xanthine oxidase inhibitor, allopurinol (Zyloprim). Recent evidence suggests that LANVIS is particularly useful in concurrent or sequelist combination with other antineoplastic drugs, e.g., cytosine arabinoside. Not effective for the treatment of chronic lymphocytic leukaemia or solid tumours. The aim of therapy is to achieve normal appearance of the bone marrow and pheripheral blood. It is recognised, however, that in treating acute leukaemia, one may not always be able to achieve complete remissions and must be satisfied with partial improvement.

How to take it

The way to take this medicine is: Oral. This medicine is taken by mouth.

  • Store below 25 degrees Celsius
  • Store in a Dry Place
  • Protect from Light
  • Shelf lifetime is 4 Years.

You should seek medical advice in relation to medicines and use only as directed by a healthcare professional.

Always read the label. If symptoms persist see your healthcare professional.

Visual appearance

White to off-white tablet, round, biconvex scored and marked "T40" on one side and plain on the other

Images are the copyright of the Pharmacy Guild of Australia

Do I need a prescription?

This medicine is available from a pharmacist and requires a prescription. It is Schedule 4 : Prescription Only Medicine.

Is this medicine subsidised?

This medicine was verified as being available on the PBS (Pharmaceutical Benefits Scheme) on September 1, 2022. To learn more about this subsidy, visit the Pharmaceutical Benefits Scheme (PBS) website.

Pregnant or planning a pregnancy?

For the active ingredient tioguanine

You should seek advice from your doctor or pharmacist about taking this medicine. They can help you balance the risks and the benefits of this medicine during pregnancy.

Download leaflet

For side effects, taking other medicines and more

Download consumer medicine information leaflet (pdf) from the Therapeutic Goods Administration (TGA) website

Reporting side effects

You can help ensure medicines are safe by reporting the side effects you experience.

You can report side effects to your doctor, or directly at

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