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Why Do We Recommend This Product?

Dr. Dressler recommends using transfer factor alongside medicinal mushrooms to boost the immune system. Transfer factor is fractionated from colostrum.

While there are many brands that sell transfer factor, Source Naturals is a brand we trust.

Check chapter 14 in Dr. Dressler’s book The Dog Cancer Survival Guide to learn more about medicinal mushrooms and how they might support your dog, including doses and precautions.

Product Features

From the Manufacturer:

  • Supports Immune System Response
  • Low molecular weight fraction of bovine colostrum
  • Transfer factors are chemical messengers that enhance immune system response
  • Gluten free
  • Corn free