Z-Stack® is one of Dr. Zelenko's premier products that he specifically designed to support your body's natural immune system.
With decades of experience as a family doctor, the knowledge Dr. Zelenko has gained over the years led to him formulating his own supplement which we now know as Z-Stack™.
Z-Stack is based on Dr. Zelenko's years of extensive published scientific research – and now made available to you.
Enjoy free shipping for all US orders.
The ingredients in each capsule of Z-Stack weren't chosen at random – they were chosen specifically for their natural ability to help support your immunse system and natural defense when you need it most
Supplementation of vitamin C has been found to improve components of the human immune system such as antimicrobial and natural killer cell activities.
Vitamin D supports a resilient immune system by fortifying your body defenses against bacteria and virsues.
Zinc is a nutrient found throughout your body, that helps your immune system and metabolism function. Evidence suggests that if zinc supplementation is started within 24 hours of cold/flu symptoms starting, the supplement can help shorten the duration of illness.
Quercetin promotes a healthy inflammatory response, while supporting sinus and upper respiratory health. This nutrient helps your body better absorb and utilize vital nutrients like Vitamin C.
Each product from Z-Stack was built from Dr. Zev Zelenko's critical research into natural immunity.
Z-Stack's immune support properties mean it's a wonderful preventative as well as a treatment for illness.
All Zelenko products feature fast, free shipping on all orders because we know how important it is to stay healthy.
Dr. Zelenko built his legacy on the same products that bear his name to this day. Zelenko Labs stands behind its products with a 100% satisfaction guarantee.
Z-Stack was forumulated to be safe, healthy, and taken by people from all walks of life.
