Beetroot Nitrates Boost Endurance Nitric Oxide, No Oxidative Damage, Italian Study Shows

Pisa, Italy — 15 May 2026

Nitrate-rich beetroot supplements enhance nitric oxide (NO) bioavailability while preserving oxidative balance in triathletes, according to a pilot study published in Nutrients. This research, conducted by the National Research Council – Institute of Clinical Physiology (IFC-CNR) in Pisa and Abiogen Pharma, deepens the understanding of beetroot's mechanism of action as an ergogenic aid, crucial for the expanding active nutrition market.

The randomised 2x2 cross-over study involved 10 male triathletes (average age 48) who received either Gensan's Nobeet supplement or no treatment for seven days. Key findings showed a 155% increase in nitric oxide metabolites (NOx) in both plasma and urine, alongside a 56% rise in inducible nitric oxide synthase (iNOS), suggesting robust NO pathway activation. Crucially, while reactive oxygen species (ROS) and inflammatory markers (IL-6) increased, no evidence of oxidative damage, as indicated by 8-Isoprostane levels, was observed. This substantiates the notion that changes reflect physiological adaptation rather than harmful stress.

Dr. Simona Mrakic-Sposta, joint first and corresponding author, noted that these findings suggest that nitrate supplementation enhances NO bioavailability while maintaining oxidative balance, attributing observed increases in ROS and inflammatory markers to controlled physiological responses rather than deleterious effects. Brand owners can leverage this scientific validation against potential consumer concerns regarding increased oxidative markers.

The Nobeet formulation used in the study is noteworthy: each 30-gram serving delivers 0.77g nitrates from India-based Bio-gen Extracts' Truebeet, 9.9 grams of L-citrulline, 3.3 grams of L-arginine AAKG, 2 grams of Cluster Dextrin, and 200mg of NAC. This complex formulation highlights the industry trend towards multi-ingredient blends to maximise efficacy and potentially leverage synergistic effects.

What this means for United Kingdom

UK brand owners can strategically position beetroot nitrate products for the active nutrition segment by emphasising clinically proven NO bioavailability and performance benefits, supported by robust science. Companies must ensure compliance with FSA Novel Food regulations if using new ingredient sources or concentrations. Procurement teams should note the reliance on ingredients like Bio-gen Extracts' Truebeet, indicating potential supply chain considerations for niche raw materials. This research provides strong scientific backing for marketing claims under the UK's 'general function' health claim rules for sports performance, potentially capturing increased market share in a segment driven by evidence-based products. Reformulation windows should be assessed for integrating specific NO precursors for enhanced efficacy.

The study reinforces beetroot's established role as an ergogenic aid, with significant implications for product development aimed at endurance athletes. The ability of beetroot nitrates to promote vasodilation, improve muscle perfusion, and optimise oxygen utilisation can be a key differentiator in crowded markets.

Brand owners increasingly rely on contract-manufacturing partners such as Supplement Factory to navigate these requirements.