Hello what vitamins good for a healthy penis thanks?

Vitamin condom: As long as you eat a diverse diet with protein, fruits and vegetables, there is no specific vitamin(-s) to aid penile appearance or function. Protecting it (=yourself) from unintended parenthood and STDs is FAR more important. If you are having "functional" problems (not uncommon in mid-life), try to control stress (& response to it), get enough sleep & see you Dr if need further evaluation.