Top U.S. Veterinarian:
"Do This If Your Dog Can't Stop
Itching, Licking And Scratching.."

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Dr. Shelby Drew

America's Most Recognized Veterinarian

Dr. Shelby Drew

Dr. Shelby Drew is one of America's most recognized veterinarians. An Ivy League graduate from UPenn, the top vet school in America, Dr. Shelby has spent 35 years caring for dogs and supporting their long-term health and vitality.

Through her call-in radio talk show, Dr. Shelby has educated dog parents across the country for over a decade. Her television appearances have shown millions of dog parents how to support their dogs' everyday wellness naturally.

Her unique discoveries have been published in hundreds of leading publications, read and studied by thousands of vets across America.

Dr. Shelby's gift is seeing the big picture — caring for the whole animal, not simply treating symptoms — supporting healthy digestion, comfortable skin, and overall wellness in not just her patients, but her own dogs, her children's dogs, her grandchildren's dogs, and thousands of other dogs across the country.

Dr. Shelby Drew
Ivy League Graduate, UPenn

Dr. Shelby Drew

20 Comments
  • Danielle P.

    Danielle P.

    I had no idea a dog's gut lining was only one cell thick. The part explaining how "gut holes" even form caught me completely off guard. Stick around for that section.

  • Greg M.

    Greg M.

    The stat about how much old poop is just stuck in there stopped me cold. Never thought about where it all actually goes. Didn't look away once.

  • Tyler S.

    Tyler S.

    Almost scrolled past, so glad I didn't. The conveyor-belt explanation of how a healthy gut is supposed to work finally made it click for me.

  • Rachel W.

    Rachel W.

    Went in skeptical and couldn't stop watching. The way she explains "Disrupted Gut" connected dots I didn't know were connected.

  • Megan F.

    Megan F.

    The spiky-toxins part is wild. Watch through to where she explains why our dogs get hit way harder than we do — way more lightbulb moments than I expected.

  • Aaron B.

    Aaron B.

    Real eye-opener. Started the daily sprinkle with my bulldog this week — curious to see how his coat and energy come along.

  • Kayla D.

    Kayla D.

    The postbiotics-vs-probiotics part really landed. Finally someone explaining why most of what I'd been giving my dog might not even reach where it needs to go.

  • Steve R.

    Steve R.

    Every minute held me. The deeper it got into how the gut lining tears, the more it sounded like it was describing my own dog.

  • Paul G.

    Paul G.

    Sent it to my brother — he wrote back asking why he'd never heard the "trapped meals" thing before. Really makes you think.

  • Olivia H.

    Olivia H.

    The swiss-cheese gut lining visual genuinely surprised me. If your dog has messy digestion, it's worth hearing the explanation.

  • Derek N.

    Derek N.

    Had to pause partway just to process the toxic-poop part. First time the digestion-and-skin connection actually made sense to me.

  • Sofia V.

    Sofia V.

    I've watched a lot of these and this one stood apart. The glyphosate/ground-toxin angle really stuck with me.

  • Nathan C.

    Nathan C.

    Not sure how I found this, but glad I did. It raised questions about my shepherd's digestion I hadn't thought to ask.

  • Hannah K.

    Hannah K.

    The gut-lining section pulled it all together for me — the digestion, the itching, the dull coat, all one picture. Wait for that part.

  • Kevin T.

    Kevin T.

    Was doubtful about the sprinkle at first. By the end I was sending the link to every dog owner I know.

  • Christine A.

    Christine A.

    Wish more people understood what's actually being described here. The "conveyor belt" idea reframed how I think about my dog's meals.

  • Ryan J.

    Ryan J.

    Passed it to my parents — their cocker spaniel's had a rough coat forever and this gave them a whole new lens on it.

  • Vanessa L.

    Vanessa L.

    Endless supplement pitches out there, but this felt different — especially the part about how a lot of chews may work against the gut instead of for it.

  • Josh E.

    Josh E.

    Reassuring to know other people see the same things I do. The trapped-poop explanation finally gave it context for me.

  • Marcus D.

    Marcus D.

    Didn't expect to watch the whole thing but I did. The part where she explains where the gut holes come from is worth sticking around for.

Supportive Clinical Studies:

  1. Reisinger, A., Stübing, H., Ishii, P. E., Suchodolski, J. S., Lidbury, J. A., Busch, K., & Unterer, S. (2024). Evaluation of intestinal barrier dysfunction with serum iohexol concentration in dogs with acute hemorrhagic diarrhea syndrome. Animals, 14(6), 963. https://doi.org/10.3390/ani14060963
  2. Rutgers, H. C., Batt, R. M., Proud, F. J., Sørensen, S. H., Elwood, C. M., Petrie, G., Matthewman, L. A., Forster-van Hijfte, M. A., Boswood, A., Entwistle, M., & Fensome, R. H. (1996). Intestinal permeability and function in dogs with small intestinal bacterial overgrowth. Journal of Small Animal Practice, 37(9), 428–434. https://doi.org/10.1111/j.1748-5827.1996.tb02443.x
  3. Weber, M. P., Martin, L. J., Dumon, H. J., Biourge, V. C., & Nguyen, P. G. (2002). Influence of age and body size on intestinal permeability and absorption in healthy dogs. American Journal of Veterinary Research, 63(9), 1323–1328. https://doi.org/10.2460/ajvr.2002.63.1323
  4. Hagman, R., Rosberg, P., Al-Saffar, A., & Luc-Webb, D. (2015). A new test for canine intestinal mucosa permeability. Acta Veterinaria Scandinavica, 57(Suppl 1), O16. https://doi.org/10.1186/1751-0147-57-S1-O16
  5. Health Research Institute. (2023). HRI glyphosate testing: Pets and GMOs. Institute for Responsible Technology. https://petsandgmos.com/hri-glyphosate-testing/
  6. Jones, A. (2024). Is your pet's food contaminated with Roundup (glyphosate)? Veterinary Secrets. https://veterinarysecrets.com/is-your-pets-food-contaminated-with-roundup-glyphosate/
  7. USA Today. (2013, May 7). Pet longevity by state linked to spaying and neutering. USA Today. https://www.usatoday.com/story/news/nation/2013/05/07/pet-longevity-states-spay-neuter/2130813/
  8. Banfield Pet Hospital. (2013). State of pet health 2013 report. Banfield Pet Hospital. https://www.banfield.com/-/media/Project/Banfield/Main/en/general/SOPH-Infographic/PDFs/Banfield-State-of-Pet-Health-Report_2013.pdf
  9. The states that use the most glyphosate [Reference report]. (2019). https://drive.google.com/file/d/163gzNoywN5jRpJPTOT-7DORy5U0Ubb-s/view
  10. Glyphosate in pet food [Supporting reference document]. https://drive.google.com/file/d/11-65WUh8rW3K57OW_HoyEvHnTu9ZL8pR/view
  11. Yi, C., Nicolas, C. S., Sun, Z., Wang, Q., Dong, T., & Wu, Y. (2026). Effects of a novel prebiotic and postbiotic dietary supplement on gut microbiota, intestinal barrier markers, and inflammation in healthy dogs. Veterinary Sciences, 13(5), 417. https://doi.org/10.3390/vetsci13050417
  12. Prasad, S., Patel, B., Kumar, P., & Lall, R. (2025). Postbiotics: Multifunctional microbial products transforming animal health and performance. Veterinary Sciences, 12(12), 1191. https://doi.org/10.3390/vetsci12121191
  13. Coupe, P. (2023, February 24). What is the impact of dietary fibre and prebiotics on the microbiome and gastrointestinal health? Improve Veterinary Education. https://improveinternational.com/uk/clinical-library/dietary-fibre-nutritional-management