Clean Athlete's Guide to Nitric Oxide + Lactic Buffering

Drug-tested athletes face two questions that most supplement brands do not answer honestly: Is this product actually clean? And is it actually effective?

This guide answers both.

Part 1: What Clean Sport Credentials Actually Mean

Before you put anything in your body pre-competition, you need to understand what supplement certifications do and do not guarantee. The certification landscape is fragmented, the marketing language is often aspirational rather than precise, and the differences between credential tiers matter enormously for athletes subject to testing.

cGMP Certified Manufacturing (Current Good Manufacturing Practice) cGMP certification means the manufacturing facility follows FDA-mandated standards for identity testing, potency, sanitation, equipment calibration, and batch records. It guarantees the product is what the label says it is, manufactured consistently. Both Beetroot Pro and Endurance360 are made in a cGMP certified US facility.

ISO/IEC 17025 Lab Testing ISO 17025 is the international standard for calibration and testing laboratories. An ISO 17025 accredited lab has been audited for technical competence: its equipment is calibrated, its methods are validated, and its results are traceable. Beetroot Pro and Endurance360 undergo ISO 17025 testing for identity, potency, and purity screening.

NSF Certified for Sport and Informed Sport These are the gold standard for anti-doping assurance. They test finished product batches specifically for WADA prohibited substances (290+ in NSF's program) and issue lot-level certificates. Beetroot Pro and Endurance360 are NOT currently certified by these programs.

Credentials at a glance

Credential	Scope	What it tests	What it does NOT guarantee
cGMP	Manufacturing facility	Identity, strength, quality, purity of ingredients	That the finished product was batch-tested for banned substances
ISO/IEC 17025	Testing laboratory	The lab's own competence to produce valid analytical results	That every batch of the product was tested against WADA prohibited list
NSF Certified for Sport	Finished product	Lot-level screening for 290+ WADA prohibited substances	Nothing relevant to performance; only identity + absence of banned substances
Informed Sport	Finished product	Lot-level screening for banned substances, plus quality audit	Same as NSF; orthogonal to performance claims
USP Verified	Finished product	Identity, strength, ingredient composition, and absence of contaminants	Not a sport-specific certification; primarily consumer trust

The honest bottom line: cGMP + ISO 17025 lab testing is rigorous and meaningful. It is not a substitute for NSF or Informed Sport lot-level testing for athletes in elite drug-tested competition. Many athletes at the amateur, masters, collegiate, and age-group level use Beetroot Pro with confidence. Elite professional athletes in programs with zero tolerance for risk should weigh the distinction and may want to seek out NSF/Informed Sport certified alternatives for the most conservative possible approach.