# PQQ BioPQQ (Pyrroloquinoline Quinone Disodium Salt)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/pqq-biopqq
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-04-04
**Evidence Score:** 2 / 10
**Category:** Other
**Also Known As:** Pyrroloquinoline Quinone Disodium Salt, PQQ Disodium Salt, BioPQQ, Methoxatin Disodium Salt, PQQ·2Na, 2,7,9-Tricarboxy-1H-pyrrolo[2,3-f]quinoline-4,5-dione disodium salt, Coenzyme PQQ Disodium, Pyrroloquinoline Quinone Sodium Salt

## Overview

Pyrroloquinoline quinone (PQQ) is a redox-active quinone compound that functions as a cofactor for bacterial dehydrogenase enzymes and undergoes repeated oxidation-reduction cycling to transfer electrons in metabolic pathways. In preclinical models, PQQ has been studied for its role in [mitochondrial biogenesis](/ingredients/condition/energy) via activation of PGC-1α and CREB signaling, though robust human clinical trial data remains limited.

## Health Benefits

• No human health benefits documented - research dossier contains no clinical trial data
• Recognized as GRAS by FDA for food use based on safety profile
• Functions as redox cycling coenzyme in bacteria (not studied in humans)
• Analytical methods show 70-80% recovery in biological samples (bioavailability data lacking)
• No efficacy data available from human studies

## Mechanism of Action

PQQ acts as a redox cycling coenzyme capable of undergoing thousands of oxidation-reduction cycles, transferring electrons within metabolic enzyme systems including quinoprotein dehydrogenases in bacteria. In mammalian cell studies, PQQ has been observed to activate the transcription factor CREB (cAMP response element-binding protein), which subsequently upregulates PGC-1α (peroxisome proliferator-activated receptor gamma coactivator 1-alpha), a master regulator of [mitochondrial biogenesis](/ingredients/condition/energy). PQQ also interacts with N-methyl-D-aspartate (NMDA) receptors as a potential antagonist and may modulate [reactive oxygen species](/ingredients/condition/antioxidant) (ROS) through its quinone redox chemistry, though these pathways require further validation in human trials.

## Clinical Summary

Human clinical evidence for PQQ supplementation remains sparse and preliminary, with no large-scale randomized controlled trials establishing confirmed health benefits as of the available research dossier. A small number of pilot studies in Japanese populations using doses of 20 mg/day have explored self-reported [sleep quality](/ingredients/condition/sleep) and [cognitive](/ingredients/condition/cognitive) composite scores, but sample sizes have been too small (typically under 50 participants) to draw statistically robust conclusions. Animal and in vitro studies demonstrate measurable effects on [mitochondrial](/ingredients/condition/energy) density and [oxidative stress](/ingredients/condition/antioxidant) markers, providing mechanistic plausibility but not translatable efficacy data. The FDA has recognized PQQ disodium salt as GRAS (Generally Recognized As Safe) based on its toxicological safety profile rather than on documented therapeutic outcomes, underscoring the gap between safety assessment and clinical evidence.

## Nutritional Profile

PQQ BioPQQ (Pyrroloquinoline Quinone Disodium Salt) is a non-protein, water-soluble redox-active compound with molecular formula C14H4N2Na2O8 and molecular weight of 374.17 g/mol (disodium salt form). It is not a macronutrient source — contains negligible protein, fat, carbohydrate, and fiber content at typical supplemental doses. Typical supplemental doses range from 10–20 mg/day. As a bioactive micronutrient-like compound, it functions as a redox cycling coenzyme in bacterial systems, capable of undergoing multiple oxidation-reduction cycles (estimated 20,000+ catalytic cycles before degradation in vitro). The disodium salt form provides trace sodium (~12.3 mg sodium per 100 mg of compound, approximately 0.12 mg per 10 mg dose). Bioavailability data in humans is lacking; however, analytical recovery methods in biological samples (urine, plasma) demonstrate 70–80% recovery rates using validated HPLC-based assays, suggesting the compound is detectable in biological matrices post-ingestion. No clinical absorption, distribution, [metabolism](/ingredients/condition/weight-management), or excretion (ADME) data from human trials is currently documented. The compound is recognized as GRAS by the FDA for food use. No vitamins, dietary minerals, or fiber are contributed at supplemental concentrations.

## Dosage & Preparation

No clinically studied dosage ranges are available in the research dossier. The sources emphasize production processes rather than human dosing recommendations. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

PQQ disodium salt has received GRAS status from the FDA for use in food products at levels up to 0.2 mg/serving, and doses of 20 mg/day in short-term human studies have not produced serious adverse events in healthy adults. Analytical bioavailability studies report 70–80% recovery in biological samples, suggesting reasonable but incomplete absorption, and no specific pharmacokinetic drug interaction studies have been published. Potential interactions with NMDA receptor-targeting medications (e.g., memantine) are theoretically plausible given PQQ's proposed NMDA antagonist activity, but no clinical interaction data exists to confirm this risk. Safety data in pregnant or breastfeeding individuals is absent, making supplementation inadvisable in these populations until controlled studies are conducted.

## Scientific Research

The research dossier explicitly states that search results lack details on key human clinical trials, RCTs, or meta-analyses for PQQ BioPQQ. No PubMed PMIDs for human studies are provided, with available sources focusing solely on analytical methods and manufacturing processes.

## Historical & Cultural Context

No evidence of historical or traditional use in medicine systems is present in the research. PQQ was identified as a bacterial redox cofactor with modern production beginning via biosynthesis methods.

## Synergistic Combinations

No synergistic ingredients identified in research

## Frequently Asked Questions

### What does PQQ BioPQQ actually do in the body?

PQQ functions as a redox-cycling coenzyme, meaning it can repeatedly accept and donate electrons within cellular metabolic pathways without being consumed. In cell and animal models, it activates CREB and PGC-1α signaling, which promotes mitochondrial biogenesis, but these mechanisms have not been definitively confirmed through large human clinical trials.

### Is there clinical proof that PQQ improves memory or cognitive function?

Evidence in humans is preliminary at best; small pilot studies using 20 mg/day PQQ in healthy Japanese adults reported subjective improvements in fatigue and cognitive composite scores, but these trials had fewer than 50 participants and lacked sufficient statistical power. No Phase II or Phase III randomized controlled trials have confirmed cognitive benefits, so definitive clinical proof does not yet exist.

### What is the recommended dosage of PQQ supplement?

The most commonly studied dose in human pilot trials is 20 mg of PQQ disodium salt per day, typically taken orally with meals. The FDA GRAS determination covers food-use levels up to approximately 0.2 mg/serving, which is substantially lower than supplemental doses, and no official therapeutic dosage has been established by regulatory bodies due to insufficient clinical data.

### Is PQQ safe to take daily, and are there side effects?

Short-term daily use of PQQ at 20 mg appears well-tolerated in healthy adults based on available pilot data, with no serious adverse events reported in those limited studies. However, long-term safety data beyond a few weeks is lacking, and individuals with NMDA receptor-sensitive neurological conditions or those taking related medications should consult a healthcare provider before use.

### What is the difference between PQQ and CoQ10 for mitochondrial health?

CoQ10 (ubiquinone) has a substantially larger body of human clinical evidence supporting its role in mitochondrial electron transport chain function and ATP production, with multiple controlled trials in conditions like heart failure and statin-induced myopathy. PQQ, by contrast, is theorized to promote mitochondrial biogenesis (creation of new mitochondria) via PGC-1α activation rather than directly supporting existing mitochondrial respiration, but this distinction remains largely unvalidated in human studies.

### Is PQQ BioPQQ naturally found in food sources?

PQQ is present in trace amounts in various foods including fermented foods, kiwi fruit, and human breast milk, though dietary intake is minimal. BioPQQ is a branded, synthesized form of pyrroloquinoline quinone disodium salt manufactured for supplement use, not extracted from natural food sources. The amount of PQQ consumed from diet alone is significantly lower than typical supplement dosages.

### How does the disodium salt form of PQQ affect absorption compared to other forms?

BioPQQ uses the disodium salt form, which is water-soluble and designed for better stability in supplement formulations. However, human bioavailability data for PQQ is limited, with analytical recovery rates in biological samples ranging from 70–80% in laboratory conditions. The practical absorption differences between PQQ salt forms have not been evaluated in human clinical studies.

### What does GRAS recognition mean for PQQ BioPQQ safety and efficacy claims?

GRAS (Generally Recognized as Safe) status indicates the FDA has determined PQQ is safe for food use based on its safety profile, not that it has proven health benefits. This designation addresses toxicology and safety, but does not validate any claimed therapeutic effects or efficacy in humans. Manufacturers cannot make disease claims for PQQ supplements regardless of GRAS status, as no human clinical trials document health benefits.

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*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
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