Stopping tamoxifen after 2 years

Tamoxifen blocks oestrogen signals in certain breast cancer cells. It may be prescribed after treatment to lower the chance of recurrence, or to reduce risk in a person who has not had breast cancer. The intended duration depends on the diagnosis, age, menopausal status, other treatments, family history, and side effects. Stopping at 2 years may leave the original treatment plan incomplete, but persistent adverse effects can justify a careful review rather than silent suffering.

Tell your oncology or prescribing team what is prompting the change, including hot flushes, mood changes, vaginal bleeding, leg symptoms, or difficulty taking tablets. Keep a record of missed doses and all medicines, including hormonal products and supplements. Ask whether a different endocrine plan is appropriate and how monitoring would work. You can read more about Tamoxifen, Risk-Reducing Endocrine Therapy, and Hormone Therapy for Cancer through the linked pages.

Seek urgent care for chest pain, sudden breathlessness, coughing blood, one-sided leg swelling or pain, sudden weakness, or heavy or unexpected vaginal bleeding. These symptoms need assessment even if you are thinking about stopping tamoxifen for another reason.

Ask what benefit the planned course provides, what alternatives are available, and whether your symptoms can be treated while continuing. Ask which bleeding or clot-related symptoms need urgent help, what monitoring is needed, and how follow-up changes if tamoxifen is stopped.