• PROBULIN® | The Next Generation of Probiotics

    All Probulin® products are formulated by Board-Certified Gastroenterologist Dr. Shekhar Challa and Board-Certified Naturopathic Doctor Jason Mitchell. We at Probulin® pride ourselves in producing the highest quality probiotic supplements on the market. Probulin®represents “The Next Generation in Probiotics.”
    Click to Learn More

  • Your Digestive
    Health Authority

    Dr. Challa is passionate about quality digestive health and wellness. He has researched and focused closely on acid reflux disease, hepatitis C, and probiotics delivering promising solutions in a well understood way.

    About Dr. Challa

    Dr. Challa
  • Knowledge is Power!

    Learn more about digestive health and become your own health advocate today!
    Download your FREE Digestive Education sheets on a wide range of digestive health topics, including Colon Cancer, Gastro Reflux Disease, IBD, IBS, Crohn’s Disease, and many more…

    FREE Educational PDFs

    Educational PDFs
  • Free Online Digestive Health Quizzes

    DrChalla.com offers four FREE online quizzes designed to test your basic understanding of common gastrointestinal conditions.

    Test Your Digestive Health IQ!

  • Download Your FREE E-Books Now!

    Three new e-books from award-winning author, Dr. Shekhar Challa, are now available for you to download FREE.  Just click on the button below, send us your email, and we’ll send you a link to download your FREE e-books!

    Download Now



Dr. Challa believes knowledge is power and quality healthcare starts with you.

NOW AVAILABLE – Order your full paperback version of “Probiotics For Dummies” at 30% off retail price. Available April 2012.
Learn more about Probiotics for Dummies

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