Lenvatinib (Lenvima, Lenvanix): — The Complete Patient Guide

Most foods are fine, and lenvatinib can be taken with or without a meal. Grapefruit and grapefruit juice can affect how the body processes certain targeted therapies, so ask your pharmacist whether this applies to your specific regimen. Herbal supplements — including high-dose turmeric, ashwagandha and St John's Wort — can interact with lenvatinib. Tell your team everything you are taking, including Ayurvedic preparations, before you start and whenever anything changes.

Blocking the VEGFR pathway — which is how lenvatinib works — also reduces the flexibility of blood vessel walls as a side effect, and this raises blood pressure. Very high blood pressure that is not managed can cause serious events including stroke or damage to the heart or kidneys. This is not a reason to be alarmed, because your team monitors it from day one. It is a reason to take blood pressure readings seriously, record them consistently, and report any reading your team has flagged as too high rather than waiting for your next appointment.

Hair thinning affects some people on lenvatinib, but it is different from the hair loss that chemotherapy causes. You are unlikely to lose all your hair. Thinning tends to be patchy or diffuse rather than complete, and it often stabilises once your body has adjusted to the drug. If it is affecting your confidence or daily life, mention it at your next review. Your team should know about anything that is making treatment harder to live with, because some practical steps can help.

Yes, and this is important to plan for early. Lenvatinib impairs wound healing and can increase the risk of complications after any surgical procedure, including dental surgery. NCCN guidance recommends stopping lenvatinib for an appropriate period before planned surgery and not restarting it until the wound has healed adequately. The exact timing depends on the nature of the procedure. Tell your surgeon that you are taking lenvatinib before any procedure is booked, and inform your oncologist as soon as surgery is planned so the two teams can coordinate.

Lenvatinib is not safe during pregnancy. Animal studies have shown harm to the developing foetus, and both men and women taking it are advised to use effective contraception throughout treatment and for a defined period after the last dose. If you are planning a pregnancy, or think you may already be pregnant, tell your oncologist immediately before taking any dose. Breastfeeding is also not recommended during treatment. These requirements are part of the prescribing guidance from CDSCO and are not optional or open to individual interpretation.

Lenvatinib is typically taken for as long as it continues to control the cancer and the side effects remain acceptable. It is not a fixed course in the way many chemotherapy regimens are. Your oncologist will assess response through regular imaging — usually a CT or PET-CT arranged through partner imaging centres — and through blood tests at intervals. If the cancer progresses despite treatment, or the side effects become unmanageable, your oncologist will discuss what the next options are. There is no expectation that you continue if the balance of benefit and burden has shifted.