Highest Concentration of Nitrate From a Food Source.

One clean and clinically studied ingredient
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What Is Red Spinach?

Red spinach (Amaranthus dubius, Amaranthus tricolour) is a flowering leafy plant naturally rich in dietary nitrate. We work exclusively with an overseas partner to harvest and process select red spinach crops.

The leaves are carefully concentrated into a ready-to-use red spinach extract powder, allowing for consistent composition and reliable nitrate delivery.

Why Red Spinach is Special.

Red spinach is an exceptionally nitrate-dense plant that supports healthy circulation and nitric oxide production. By concentrating select red spinach leaves into a standardized powder, we’re able to deliver meaningful nitrate levels in a small, clean serving.

That concentration makes it a predictable option for daily use, especially when consistency and tolerance matter. The result is functional support you can rely on, without unnecessary ingredients, fillers, or digestive side effects.

Key advantages

  • The highest nitrate in a food source
  • Transparent, measured nitrate levels per serving
  • Oxalate-free for clean nutrient intake
  • No added sugar, chemicals, or flavors
  • No bloating or digestive side effects
  • Safe for daily use and easy to mix

New Clinical Study

Significantly higher plasma nitrate/nitrite concentrations compared to placebo.

Two needs. One studied ingredient.

400mg nitrate for athletic performance.
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240mg nitrate for daily vitality.
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What Our Customers Say

"Highest concentration of nitrate from a food source! Great product for use in juices and smoothies to ramp up natural nitric oxide production!"

Norman G. Hord, Professor and Department Head, Oklahoma State University

"I used RS400 for training and during a marathon. It was a game changer! Definitely recommended!"

Jeff Watts, Associate Minister, Beaverton, Oregon

"This is AMAZING stuff. VitaSpinach has helped control my blood pressure. I recommend this if you want to improve health and feel good." 

Greg Andruk, CPA, Logan, UT

"I'm a 62-year-old female who often lacks energy for my workouts or just for daily living. I've been using Vitaspinach daily for about a week, and I can already feel a difference, both when I exercise and when I'm working through mental tasks at work."

Susan Barney, Caregiver, Wyoming