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PQQ Disodium Salt

Also known as: PQQ disodium salt, PQQ, BioPQQ™, Pyrroloquinoline quinone disodium salt

Overview

Pyrroloquinoline quinone disodium salt (PQQ disodium salt) is a stable, water-soluble derivative of PQQ, a redox cofactor found naturally in various foods like fermented soybeans, green tea, and spinach. It is also produced through bacterial fermentation. PQQ is primarily recognized for its potent antioxidant properties and its potential to enhance mitochondrial function, which is crucial for cellular energy production. This makes it a popular dietary supplement aimed at supporting cognitive health and reducing fat accumulation. While research on PQQ is ongoing, including animal, cell culture, and some human studies, large-scale randomized controlled trials are still limited. Regulatory bodies like EFSA have evaluated its safety, supporting its use in healthy adults at doses up to 20 mg/day, though it is not recommended for pregnant or lactating women due to insufficient data.

Benefits

PQQ offers several potential benefits, primarily centered around its role in mitochondrial health and antioxidant activity. Its most significant effect is the enhancement of mitochondrial biogenesis and function, which can improve energy metabolism and reduce oxidative stress, as supported by preclinical studies and reviews. This mechanism also contributes to its potential to reduce visceral and hepatic fat accumulation, observed in animal models, suggesting anti-obesity properties. Secondary benefits include protection against exercise-induced fatigue and support for bone health by promoting osteoblast activity and inhibiting osteoclasts, also demonstrated in animal models. Furthermore, preclinical studies indicate PQQ's promise in attenuating mitochondrial dysfunction-related disorders like Parkinson’s disease and reproductive aging. While human data are limited, they suggest potential cognitive and metabolic benefits. However, quantitative human data with precise effect sizes and confidence intervals are scarce, with most findings stemming from preclinical or small-scale human studies.

How it works

PQQ functions primarily as a redox cofactor and a powerful antioxidant, effectively scavenging reactive oxygen species and mitigating oxidative stress. A key mechanism involves its ability to stimulate mitochondrial biogenesis, the process of creating new mitochondria, by activating crucial signaling pathways such as PGC-1α. This leads to an increased number and improved function of mitochondria, thereby enhancing cellular energy production. Additionally, PQQ modulates cellular energy metabolism, reduces inflammation, and suppresses lipogenesis (fat synthesis), contributing to its observed effects on fat reduction. The disodium salt form ensures adequate absorption and bioavailability for oral supplementation, being water-soluble and stable.

Side effects

PQQ disodium salt is generally considered safe for consumption at recommended doses. Based on safety assessments, including animal studies, a large margin of safety has been established, with a No Observed Adverse Effect Level (NOAEL) of 100 mg/kg body weight per day in rats. This supports its safe use in humans at doses up to 20 mg/day. Common side effects are not well-documented and appear to be minimal at these recommended dosages. Currently, there are no significant drug interactions or contraindications reported in the scientific literature. However, due to a lack of specific safety data, PQQ is not recommended for pregnant or lactating women. Users should adhere to the suggested dosage to maintain its favorable safety profile.

Dosage

The minimum effective dose of PQQ in humans has not been definitively established, but typical supplement dosages range from 10 to 20 mg per day. The European Food Safety Authority (EFSA) supports a daily intake of up to 20 mg as safe for healthy adults. While higher doses have been tested in animal studies without adverse effects, human safety at doses exceeding 20 mg per day remains unconfirmed. PQQ is typically taken orally in its disodium salt form, which is standard for supplementation. There are no specific recommendations regarding the timing of supplementation, allowing for flexibility in daily intake. Adherence to the recommended dosage is important to ensure safety and potential efficacy.

FAQs

Is PQQ safe?

Yes, PQQ is considered safe at recommended doses of up to 20 mg/day for healthy adults, supported by a strong safety margin from animal studies and regulatory assessments.

Does PQQ improve energy or cognition?

Preclinical evidence suggests PQQ's mitochondrial benefits may support energy and cognitive function. Human clinical data are limited but indicate potential in these areas.

How quickly do benefits appear?

Animal studies show effects after weeks of supplementation. However, the precise timeline for observing benefits in humans is currently unclear and requires further research.

Can PQQ cause side effects?

No significant side effects have been reported at the recommended dosages of PQQ. It generally has a favorable safety profile when used as directed.

Research Sources

https://www.efsa.europa.eu/en/efsajournal/pub/5058 – This EFSA Panel scientific opinion provides a safety assessment of Pyrroloquinoline quinone disodium salt (PQQ) as a novel food. Based on a 90-day toxicity study in rats, a NOAEL of 100 mg/kg body weight per day was established, supporting the safety of PQQ at a maximum daily intake of 20 mg for healthy adults, excluding pregnant and lactating women.
https://pmc.ncbi.nlm.nih.gov/articles/PMC8533503/ – This review article highlights PQQ's role in stimulating mitochondrial biogenesis and its antioxidant effects. It summarizes preclinical and some human data, concluding that PQQ is safe in animals and humans, but notes the need for more extensive human clinical trials to confirm efficacy.
https://pmc.ncbi.nlm.nih.gov/articles/PMC10196175/ – This review, primarily based on animal and cell studies, suggests that PQQ can reduce visceral and hepatic fat accumulation and improve mitochondrial metabolism. It proposes PQQ as a potential therapeutic agent for obesity, while acknowledging the current lack of human randomized controlled trials.
https://journals.sagepub.com/doi/10.1177/1934578X221080929 – This narrative review, focusing on animal models, discusses PQQ's protective effects against exercise-induced fatigue, bone loss, and mitochondrial dysfunction. It emphasizes the promising preclinical findings but underscores the absence of human randomized controlled trial data to validate these effects.