My Husband Has Aproblem.he Has Aweak Erection. Does The Colystrol

My husband has aproblem.he has aweak erection. Does the colystrol cause this problem .the colystrol is so high 680 .he is talking atrovast to dicrease the colystrol also he started take gerimax .the doctor describe for him a new medication called bo long .is this agood to treat his problem .if no tell me what I can do to help him.