HTB Activ™ is Big Bold Health's proprietary ingredient—a rare, heirloom strain of Himalayan Tartary Buckwheat, sourced and grown exclusively with US farming partners. Evolved in harsh, high-altitude climates, this plant developed an extraordinary concentration of natural defense compounds, including over 100 diverse polyphenols confirmed through clinical testing.

What sets HTB Activ™ apart is the process behind it. Seeds are grown in a living, regenerative soil microbiome, sprouted at peak nutritional potency, then gently dried and milled to preserve their bioavailability. The result is an ingredient unlike anything else on the market—one that Big Bold Health owns from farm to formula.

Sprouting is the moment a dormant seed comes to life, activating its plant intelligence in ways that become directly available to your body when consumed. As the seed sprouts, it ramps up production of protective compounds including polyphenols, flavonoids, phenolic acids, and antioxidants—reaching levels nearly 3x higher than unsprouted flour and over 15x higher than common buckwheat.

Through enzymatic activity, your body doesn't just receive more nutrients—it receives them in forms it can recognize, absorb, and utilize. Sprouting breaks down compounds into more bioavailable forms, enhances nutrient solubility, improves interaction with your digestive system, and reduces antinutrients that can interfere with absorption.

This article provides a more in-depth explanation.

Despite its name, buckwheat is classified as a pseudocereal (or "false grain") because it is used in the same culinary and nutritional ways as true grains. Buckwheat is actually a seed harvested from a broad-leafed flowering plant that is closely related to rhubarb and sorrel. Himalayan Tartary Buckwheat is an often overlooked ancient superfood that is biologically distinct, with an unusually rich polyphenol profile. Gluten-free, grain-free, and vegetarian.

This article discusses Himalayan Tartary Buckwheat further.

HTB Sprout Powder (as HTB Activ™) in its clinically studied form allows personalized servings to taste. Its toasted nutty flavor pairs well with both sweet and savory dishes, as a topper or mixed into your favorite recipes. Ready to eat, no preparation required. 

Suggested Serving: Start with 1 tsp (6G) per serving, increase up to 3 tsp (18G) per day for the clinically recommended dose.

HTB Flour can be used as a replacement for traditional flour for baking, cooking, and thickening to supercharge your recipes with polyphenol power. Minimal processing preserves the full spectrum of phytonutrients and inherent earthy notes.

1/4 cup of flour contains ~280MG of pure organic Himalayan Tartary Buckwheat.

Explore our chef's creations for inspiration.

What you eat sends information your body acts on at a cellular level, the quality of those signals is instrumental. The immune system lives within every system of the body, when properly nourished, this directly shapes your healthspan.

HTB Activ™ delivers over 100 diverse polyphenols that build resilience from within, supporting:

• Vital organ integrity
• Metabolic efficiency
• Microbiome diversity
• Cellular rejuvenation
• Cognitive resilience
• Inflammatory balance

In this article, Dr. Jeff Bland discusses how the immune system powers longevity, and how food is the medicine that nourishes this connection.

Big Bold Health has completed the largest randomized, placebo-controlled clinical trial ever conducted on a single food—with 850 enrolled participants given a clinical dose of HTB Activ™. Results are anticipated by the end of 2026. View Press Release

Outside of our own study, there is extensive research supporting buckwheat:

1) Variation of rutin and quercetin contents in Tartary buckwheat germplasm. Fagopyrum 2019. Je Hyeok Yu et al. Source

2) A review: The nutrition components, active substances and flavonoid accumulation of tartary buckwheat sprouts and innovative physical technology for seeds germinating. Frontiers in Nutrition. 2023. Yulu Dong et al. Source

3) Treasure from garden: Bioactive compounds of buckwheat. Food Chem 2021. Huda MN et al. Source

4) Buckwheat bioactive compounds, their derived phenolic metabolites and their health benefits. Mol Nutr Food Res 2017. Giménez-Bastida JA et al. Source