Radioiodine (I131) Treatment for Thyroid Cancer

Family Planning

Men   If you are considering have a family in the future please tell your doctor as this treatment can sometimes make some men infertile.

If your partner is of childbearing age we would advise that you use contraceptives for four months after your treatment as I131 may harm a developing baby.

Women   As I131 may harm a developing baby, if you are of childbearing age we would advise that you use contraceptives before and for six months after your treatment.

You should inform your hospital doctor if your period is late and you think you may be pregnant either before or within six months of having had your treatment..

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