Irregular period

I have been on Glivec 400mg for the last 4months. My period had all along been puntual until I
started medication. My last period was a week late, but now its overdue for almost 3 weeks. I am
46  so may not likely be running into menopause. My question is whether Giivec could be causing
me this problem.
agnesC

[Dennis MD]

Hi Agnes.
Your menstrual irregularity can be caused by the intake of imatinib (Glivec).  Patients on chemotherapy do occasionally complain of menstrual irregularities, either in the interval of menstruation, or in the duration of menstruation.  However, you are already 46 years old and in the perimenopausal age.  This can also be the cause of your menstrual irregularity.  
You may continue to observe your symptom, or consult your doctor especially if you notice worsening of the symptom.
Good luck.