Impotence Drugs Won’t Raise Melanoma Risk, Study Suggests

TUESDAY, June 14, 2016 — Three widely used erectile dysfunction drugs — Cialis, Levitra and Viagra — aren’t likely to boost the risk of melanoma skin cancer, a new study reports.
Why the concern in the first place? Laboratory tests suggested that lower levels of an enzyme that’s inhibited by certain erectile dysfunction drugs might increase the growth of melanoma cells. Melanoma is the most deadly type of skin cancer.
But studies examining melanoma risk among men who take these drugs have had conflicting results, the researchers said.
The new study included more than 145,000 men who used either Viagra (sildenafil), Cialis (tadalafil) or Levitra (vardenafil). These impotence drugs inhibit an enzyme called phosphodiesterase type 5 (PDE5). The investigators compared the men…

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