The FDA does not approve this for hair loss specifically, but this “water pill” has been shown to be effective as an anti-androgen (androgens cause hair loss). It also reduces fluid retention, swelling, high blood pressure and hyperaldosteronism (a hormonal disorder).
It’s REALLY important to mention that the company that makes the drug, Sandoz, recommends that it not be used unless absolutely necessary. I’m not sure what other sites say about it, but that alone was enough for me to say, “uh, I wouldn’t recommend it.”
Depending on where you live, it might be called Aldactone, Novo-Spiroton, Aldactazide, Spiractin, Spirotone, Verospiron or Berlactone. It’s all the same stuff, just generic Spironolactone.
If for some reason, your doctor wants you to take this medication, here’s a link to buy Generic Spironolactone at a reasonable price. As always, I think generic versions are fine and to listen to your doctor. Just be aware of the risks. If you want to know more about the study:
Pitt B, Zannad F, Remme W, Cody R, Castaigne A, Perez A, Palensky J, Wittes J (1999). “The effect of spironolactone on morbidity and mortality in patients with severe heart failure. Randomized Aldactone Evaluation Study Investigators”. N Engl J Med 341 (10): 709–17. doi:10.1056/NEJM199909023411001. PMID 10471456. http://content.nejm.org/cgi/content/full/341/10/709.