So glad you said NO to her food choices!!! ;-)
*Not a fan of either food but if I had to choose one it would be the Wellness as it has better quality ingredients than the Exclusive.
*You can add some canned pumpkin (NO spices) to his food to help with the diarrhea. If he is really bad, IMHO, I think the boiled, boneless, skinless chicken breast mixed with equal parts of canned pumpkin works better than the "hamburger and rice" recipe.
*Every time a dog gets an antibiotic he should get a probiotic. Your pup probably needs a digestive enzyme and a probiotic added daily to his food to keep his gut healthy. Wholistic Digest All Plus is a great one (human grade ingredients) that has both: The Wholistic Pet
*For a couple of weeks/days, you could also add an herbal called "Slippery Elm" to sooth his stomach. Purchased at a health food store.
*You can put the coconut oil into his food. Coconut Oil is anti-fungal, anti-bacterial and anti-viral. 1 teaspoon per 10-20 pounds but start with small amount and increase SLOWLY. It should be Organic, raw, cold pressed, NO hexane.
*For the infected rash/sores:
You can try a few things. Vitamin E or 99% Aloe Vera Gel or Manuka Honey (but it's messy)or one of the following treatments:
Povidone Iodine purchased from the drug store: in a small bowl, pour a little of the povidone iodine into a small bowl and dilute it with warm purified water until it is the color of iced-tea. Use a clean cloth each time and bath the infected spots with this. Don’t rinse off, just pat dry. Do this at least 2 to 3 times daily.
OR you could try the following. It’s a little more hands on intense.
Oregano Oil: to be used at a topical: “is made of carvacrol, which is a compound that is nearly 93 percent pure oregano oil. It's this compound that the researchers at the East West School of Herbology believe can treat the antibiotic-resistant bacteria. According to research done by the University of the West of England, a small amount of carvacrol was found to be a more effective treatment than the top 18 pharmaceutical antibiotics that were tested along with it. Prior to the use of modern antibiotics, infections such as Staph/MRSA were treated with heat-clearing herbs. These are herbs thought to fight off bacteria as well as increase the body's immune system to viral infections. **Mix 6 drops of Oregano oil into 2 tablespoons of Olive Oil and apply it topically 10 times per day”. The health food store would have the Oregano Oil.
Hope this helps!