B5 and Zinc works for me, and if you go to any acne forum you will see it has worked for countless others. Some people need as much as 10 grams a day for it to work. Probably best to cycle it though as it will give you a deficiency in other B-vitamins. A B-complex would be helpful while taking it too.
It hasnt done anything for me. I think scrubbing your body and showering a lot works best. There is always Accutane, but I wouldnt advise it unless the acne is horrendous.
ALA has done more for me at 3-4g/day dosages than b-5, but there are also other factors involved so I suppose I shouldnt say conclusively the ALA is better. I will be using both on my upcoming cycle.