serious side effects could include increased risk of prostate cancer, worsening prostate symptoms, decreased sperm count, ankle, feet or body swelling, enlarged or painful breasts, problems breathing while sleeping and blood clots in the legs. common side effects include skin redness or irritation where applied, increased red blood cell count, headache, diarrhea, vomiting, and increase in psa. ask your doctor about axiron. this is the first power plant in the country to combine solar and natural gas at the same location.