PQQ
TL;DR
Unique molecule (Pyrroloquinoline quinone) that stimulates 'mitochondrial biogenesis'
Moderate evidence for improving memory and processing speed
Moderate evidence for reducing inflammation and improving sleep
Synergizes exceptionally well with CoQ10
Relatively expensive: ~$25-40/month
Best for: Mitochondrial health, 'cellular aging' prevention
What it is
PQQ is a vitamin-like compound found in trace amounts in soil and some foods (like kiwi and green peppers). Its 'superpower' is its ability to trigger the growth of new mitochondria in aging cells. Since mitochondrial decline is a hallmark of aging, PQQ is a popular longevity supplement.
What the research says
PQQ is a 'neuro-regenerative' agent. Evidence. A double-blind trial showed that 20mg of PQQ improved memory and attention in middle-aged and elderly adults. The CoQ10 Combo. When PQQ is taken with CoQ10, the cognitive benefits are significantly amplified, as PQQ builds new mitochondria while CoQ10 helps the existing ones work better.
Mitochondrial support may benefit cardiac energy production. Very limited cardiovascular-specific data.
PQQ on Amazon
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Safety
Generally safe at standard supplemental doses. Long-term human data is still accumulating, but current studies show no toxicity.
Interactions
None significant.
Dosing
Standard Dose: 10-20 mg daily. Timing: Take with a fat-containing meal.
Cost
Moderate-to-high. $25-40 per month.
The bottom line
PQQ is a high-tech longevity tool. If you are already taking CoQ10, adding PQQ is the logical next step for optimizing your cellular energy.
Sources for this page include published meta-analyses, systematic reviews, and NIH dietary supplement fact sheets. All claims reflect the evidence as of early 2026.
This is not medical advice. Consult your healthcare provider before starting any supplement, especially if you take medications.