Can dogs have Saccharomyces Cerevisiae?

Overview

Yes. Saccharomyces cerevisiae is a safe nutritional supplement for dogs. This yeast probiotic supports digestion, enhances nutrient absorption, and may strengthen immune response in dogs. Excessive doses may lead to bloating or GI upset. Stick to vet-recommended doses suitable for dogs.

Benefits

Saccharomyces cerevisiae is a yeast probiotic rich in B-complex vitamins (B1, B2, B3, and B6), which are important for energy metabolism, nervous system function, and skin health in dogs.
It’s also an excellent source of protein and essential amino acids for muscle repair.
Inactivated Saccharomyces cerevisiae (brewer’s yeast or nutritional yeast) can help support gut bacteria and may boost the immune system when used as a postbiotic or prebiotic.

Risks

Live or active Saccharomyces cerevisiae (e.g. baking yeast or raw dough) can expand inside a dog’s stomach, which can cause bloating or stomach swelling. In severe cases, it can lead to gastric dilatation-volvulus (GDV).
Excessive intake may cause gastrointestinal upset.
Some dogs may be sensitive or allergic to yeast, which can cause skin itching and digestive problems.

Servings

Use inactivated or nutritional yeast forms of Saccharomyces cerevisiae (not live yeast or baking yeast). These are available in tablet, powder, or flake form as dietary supplements or pet food additives. Consult a vet for the actual dosage suitable for your dog.
Brewer’s yeast is a form of inactivated Saccharomyces cerevisiae, so it can also be used as a nutritional supplement for dogs.