Z-Stack Canada

Dr Zelenko M.D. was a board certified physician with a busy family practice in New York State. He was described as a 'family member' by thousands of his patients, and was a devoted father and husband. Dr. Zelenko is best-known for developing his 'Zelenko Protocol,' which earned him a Nobel Prize nomination and recognition worldwide. Zelenko Labs proudly continues his legacy in Canada, the USA, and around the world.

+ Click here to read more about Dr Zelenko

Yes, it is proudly made in Canada for our Canadian customers when purchased through our .ca website (the official Zelenko Canada site!). We are partnered with a top Canadian lab that is NSF Gold Certified, GMP Certified and Health Canada approved.

Yes, we provide FREE shipping coast to coast to anywhere in Canada via Expedited Parcel provided by Canada Post.

A Kosher certification guarantees that a product's ingredients and facility are free of non-kosher substances and cross-contamination. Z-Stack® is proudly Kosher Certified.

Yes! Z-Stack® contains an all-natural blend of vitamin C, vitamin D, zinc and quercetin. To ensure the highest of standards in both ingredients and manufacturing processes, we are partnered with a top Canadian lab that is NSF Gold Certified, GMP Certified (Good Manufacturing Practices) and Health Canada-approved.

Z-Stack® helps to strengthen the immune system, fight infection at the cellular level, and keep chronic illness at bay through Dr Zelenko's balanced formulation of vitamin C, vitamin C, zinc and quercetin. The FDA and Health Canada have not evaluated this product to treat or prevent COVID-19.  Please see peer reviewed journals, scientific data and clinical trials data for more information.

Medical Disclaimer: Always consult with your physician before using this product especially if nursing, pregnant, have medical condition(s) and/or are taking medication).