My dog had pustules all over his snout...I applied goldenseal tea compresses (soothing and kills bacteria)
Internally ~ natural B-complex supplement...B's work together - you can suppliment additional B3 along w/b-complex - look for a "No-flush" version and the B-complex in natural form will have B12 in the form of "methylcobalamin" NOT "cyanocobalamin" (sythetic version)
I use New Roots ultra B50 and was all I needed for my dog w/o additional B3
Knowing the Benefits of Niacin and Niacinamide for Your Dog - Yahoo! Voices - voices.yahoo.com
Niacinamide is commonly used to treat certain autoimmune or immune mediated skin problems in dogs. It may help a greater lowering of blood pressure as well. It can also be very helpful to treat ocular diseases like conjunctivitis which is also known as pink eye.
Niacinamide for use in canines, along with tetracycline, can help in the relief of pemphigus complex. This is a condition that affects your dogs' skin, in the form of skin blisters.
Vitamin B3 may help in fight against staph infections, ?superbugs? | News & Research Communications | Oregon State University
Also a great supplement for overall health (GI, immune, skin, etc.) is Bovine Colostrum
I am using AOR (brand) 1-500mg. 2x/day 1/2 hr or mare before meals
Grinding up some raw organic pumpkin seeds and adding to food will also provide zinc/copper - also good for immune support and skin and hair health
Pumpkin Seeds: A Natural Solution For Worms | Dogs Naturally Magazine