Yes the SaveAChick vitamins and electrolytes have the B vitamins. The plain yogurt is for probiotic cultures. I have used cottage cheese, buttermilk, and sour cream as well if I was out of yogurt. It sounds like you are taking excellent care of him. I hope that he starts to get better soon. Liver failure is the biggest danger in mold poisoning. Here is an excerpt for the Merck Manual about toxic mold poisoning:
Aflatoxin
Aflatoxicosis is one of the most common intoxications in modern poultry production systems. Certain species of Aspergillus and Penicillium can produce aflatoxins in feedstuffs. The production of aflatoxins can occur either in the field where the crops are grown or during storage. Acute aflatoxicosis is characterized by inappetence, ataxia, convulsions, opisthotonos, depression, and death. A gross lesion often seen with acute aflatoxicosis is an enlarged yellow liver. All poultry are susceptible to aflatoxicosis; however, ducks and turkeys are particularly sensitive.
Ingredients: SavAChick
Potassium chloride, sodium citrate, sodium bicarbonate,
salt, vitamin D3 supplement, ascorbic acid (vitamin C),
vitamin A supplement, vitamin E supplement, niacin
supplement (vitamin B3), magnesium sulfate, calcium
pantothenate (vitamin B5), folic acid (vitamin B9),
menadione sodium bisulfite complex (vitamin K), vitamin
B12 supplement, riboflavin supplement (vitamin B2),
pyridoxine hydrochloride (vitamin B6), thiamine
mononitrate (vitamin B1), artificial color, silicon dioxide.