Can BuSpar Affect Estrogen Levels?

QUESTION:

Dear Dr. Heller,

Very informative web site.  I have a question about BuSpar.  Is it possible that it can effect your estrogen levels?  I am presently taking Sam-e (400mg) along with 10mg of BuSpar.  I am experiencing painful breast tenderness (normally only usually happens pre-menstruation).  Any information would be helpful.

Thanks.

 

ANSWER:

There’s nothing in the package insert (or PDR) about it, and I’ve never encountered a patient complaining of breast tenderness with BuSpar. There are concerns about Sam-e, particularly with drug interactions.  That would be the more likely explanation, along with some other GYN problem unrelated to either medication.