The raw ingredients in Z-Stack

Vitamin C has been shown to play a complex, protective role against toxic compounds formed from oxidized lipids and may support overall immune health.

Quercetin supports a healthy inflammatory response and functions as a zinc ionophore, helping shuttle zinc into cells so your body can better absorb and utilize it.

Vitamin D3 has been shown to increase intestinal calcium and phosphate absorption, helping maintain strong bones.

Zinc is a nutrient found throughout your body that may support your immune system and metabolic function.

What This Bundle Delivers

  • Supports a balanced stress response 
  • Promotes focus, relaxation, and mental clarity
  • Clinically dosed to support immune defence
  • Helps regulate nervous system activity 
  • Daily routine for calm, resilient, all-day support
Lady with blue shirt and glasses, very calm with headphones on head Lady with blue shirt and glasses, very calm with headphones on head

Why It Works

Your body responds to stress all day long.

Z-Stack® supports daily immune defense, helping your system stay strong and resilient.

Z-Calm™ helps regulate your stress response – so you stay balanced, focused, and in control.

Less Stress = Better Function = Stronger Immunity

Questions Customers Ask Most

Z-Stack® is an all-in-one immune support formula designed to provide key nutrients your body relies on for daily immune defense. Each serving combines vitamin C, vitamin D3, zinc, and quercetin, ingredients selected to work together to support immune function, antioxidant protection, and healthy cellular activity.

Unlike many standard vitamin blends, Z-Stack® was developed from the research and clinical insights of Dr. Vladimir “Zev” Zelenko. Each component was carefully selected to work synergistically, helping support immune function and overall wellness in a single, convenient daily formula.

The ingredients in Z-Stack® are designed to work synergistically. Quercetin acts as a zinc ionophore, helping transport zinc into cells, while vitamins C and D3 support immune response and antioxidant protection—helping your body maintain strong natural defenses.

Z-Stack® is typically taken once daily as a two-capsule serving, making it a convenient way to support immune health with multiple nutrients in one formula rather than taking separate supplements.

Z-Calm™ is a physician-formulated supplement developed by Dr. Vladimir Zelenko to support mental clarity, emotional balance, and a healthy stress response. It combines plant-based ingredients and antioxidants that help the body naturally adapt to everyday stress and promote a sense of calm.

Z-Calm™ includes ingredients traditionally used to support mood balance and relaxation by promoting healthy neurotransmitter activity and antioxidant support. This helps your body maintain emotional balance and stay resilient during periods of stress.

Z-Calm™ is ideal for individuals experiencing daily stress, mental fatigue, or mood imbalances, or anyone looking to support focus and emotional wellness as part of a daily routine. It’s especially helpful in today’s fast-paced, high-stress environments.

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Trusted Wellness, Real Feedback

“I am incredibly grateful for Z-Calm supplement! After just ten days, my daughter's anxiety and overthinking have significantly improved. It's been a gamechanger for her, and I just want to say thank you so much!”

Julia N. 🇺🇸

"I am not a medical lab technician. I take several different items I have chosen to use in order to maintain my health. I literally cannot tell you what each one is specifically doing for me inside my body. I can say that since I have been using Z-Stack, and others, I have been very healthy on a constant basis. Thank you."

Brian H. 🇺🇸

"Just started taking this supplement. It’s great!!! I do take a prescription but it alone does not help enough. Both? Much better result."

Marlene R. 🇺🇸