Question of the Month
Q:
My doctor prescribed aldactone 100mg for
me but I am worried about taking it because I read that it may cause enlargement
of the breasts and voice change. Can I also take Glucophage (metformin) with it?
A:
Many look up their drugs in the PDR, which
is a standard reference. Unfortunately the PDR has limitations as an information
source. The articles about each medication are the official "label" approved by
the FDA which the manufacturer is legally required to distribute with the
medication. As such it is a regulatory document which determines what the
manufacturer can claim about the drug and the warnings it must give. Changing
the labeling for a drug costs many millions of dollars and so manufacturers
rarely update them. In the case of Aldactone (spironolactone), a decades old
drug, much of the information is out of date. For the most complete and
up-to-date drug information, a Medline search is best but much more time
consuming than a quick look into the PDR.
With respect to spironolactone,
the breast enlargement occurs in men -- who obviously don't like it! It is
rarely, if ever, a problem for women. I am not sure why voice change is
mentioned in the PDR because I have never seen this in treating thousands of
women over more than two decades.
It is usually OK to take
spironolactone and metformin together but be sure your doctor is aware of all
the medications you are on when he or she prescribes for you.
Hope this is helpful.
Geoffrey Redmond, MD
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