Levitra is a popular medication for erectile dysfunction, but a growing number of studies suggest it could increase the risk of melanoma (skin cancer).
Levitra contains vardenafil, a drug that is nearly identical to Viagra. Both drugs treat erectile dysfunction by inhibiting the enzyme PDE5, which increases blood-flow to the penis.
Erectile Dysfunction Drugs and Melanoma
In 2014, Harvard researchers published a study linking Viagra with an 84% increased risk of melanoma. Other studies have found that PDE5-inhibitors speed up the development of melanoma and make it more invasive.
As of mid-2016, 80 melanoma lawsuits were centralized in federal court against Pfizer. Drug-makers are facing a growing number of lawsuits for failing to warn about melanoma. If patients are unaware of the risk, it could delay diagnosis and increase the risk of death.