Gardasil is a VLP (Virus Like Partials) vaccine (so it is safe) protecting
against infection by HPV types 16, 18, 6,
and 11. GARDASIL was approved by the Food
and Drug Administration (FDA) for use in boys and young men ages 9 to 26. So it could b used "off label" in an older male. Again, I think the Infectious disease doctors could make a recommendation here.
Hope this helps.