What is the recommended dosage for PQQ (Pyrroloquinoline Quinone)?

General: 10-20 mg/day; Cardiovascular Support: 20 mg/day

What are the side effects of PQQ (Pyrroloquinoline Quinone)?

Potential side effects include: Generally well-tolerated, Mild headache (rare), Mild gastrointestinal discomfort (rare).

What is PQQ and how may it relate to cardiovascular health?

Pyrroloquinoline quinone (PQQ) is a compound involved in mitochondrial biogenesis and antioxidant defense. Preliminary research suggests PQQ may support mitochondrial function in cardiac cells and reduce markers of inflammation and oxidative stress. Human clinical evidence for cardiovascular outcomes is still in early stages.

What dosage of PQQ has been studied in clinical trials?

Limited human studies have used 10–20 mg of PQQ per day. Most research on cardiovascular effects comes from animal and cell culture studies. Human trials have primarily measured inflammatory markers and mitochondrial function biomarkers rather than cardiovascular endpoints. More research is needed.

What are the potential side effects of PQQ supplements?

PQQ is generally well tolerated at studied doses of 10–20 mg daily. Headache, drowsiness, and mild fatigue have been reported rarely. Long-term safety data in humans is limited. There is insufficient data on interactions with cardiovascular medications. Consult a healthcare provider before use.

PQQ (Pyrroloquinoline Quinone)

coenzyme

Also known as: Pyrroloquinoline Quinone, BioPQQ, Methoxatin

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About

PQQ is a redox cofactor that stimulates mitochondrial biogenesis and acts as an exceptionally potent antioxidant (5,000 catalytic cycles vs. 4 for vitamin C). A small RCT found PQQ at 20 mg/day significantly reduced LDL cholesterol and CRP, but larger cardiovascular-specific human trials are needed.

How It Works

Redox cofactor that stimulates mitochondrial biogenesis through PGC-1alpha/SIRT1/AMPK signaling pathways; acts as an exceptionally potent antioxidant protecting mitochondrial membranes and reducing oxidative stress-induced endothelial damage; supports NAD+ synthesis indirectly by enhancing cellular energy metabolism; modulates NF-kB reducing vascular inflammation.

Evidence For Conditions

Condition	Grade	Studies	Participants
Oxidative Stress (Cardiovascular)	C	2	100	View →
Heart Failure	D	0	--	View →

Side Effects

Generally well-tolerated
Mild headache (rare)
Mild gastrointestinal discomfort (rare)

Drug & Supplement Interactions

May enhance effects of CoQ10 (synergistic mitochondrial support)
Theoretical interaction with anticoagulants

Always inform your healthcare provider about all supplements you take.

Related Ingredients

Coenzyme Q10 (CoQ10) NMN (Nicotinamide Mononucleotide)

Quick Facts

Dosage: General: 10-20 mg/day; Cardiovascular_Support: 20 mg/day
Forms: capsule tablet
Natural Sources: Natto, Green tea, Green peppers, Kiwi, Papaya, Parsley
Upper Limit: Not formally established; up to 60 mg/day used in short-term studies
Best Time: With or without food

Evidence Summary

Oxidative Stress (Cardiovascular) C

Heart Failure D

FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.