Is Canine Frontline Combo effective in treating sarcoptic mange?

I am not sure if my Bernese mountain dog, STARDUST, has fleas or sarcoptic mange. So I was going to treat her sudden constant scratching at her elbows, ears and neck with FRONTLINE COMBO. But I can’t find any information on pack about whether it is any good for the treatment of sarcoptic mange. Anyone out there know if it is? Of course I will go to the vet but just wanted to try to immediately ease her obvious itching. Any help gratefully received. Love Robbie and itchy Stardust x x

take your dog to the vet to get a proper diagnosis and proper treatment