PQQ (Pyrroloquinoline Quinone) vs TUDCA

Mechanism

PQQ activates PGC-1alpha via CREB phosphorylation, directly stimulating mitochondrial biogenesis — the formation of new mitochondria. It acts as a redox cycling agent capable of thousands of catalytic oxidation-reduction cycles (compared to ~4 for vitamin C), providing exceptional antioxidant capacity. PQQ also modulates NMDA receptor signaling and promotes nerve growth factor (NGF) synthesis, supporting neuronal health and cognitive function.

Standard Dosing

10-20mg daily

Timing

With breakfast. Can combine in same meal with CoQ10.

Cycle Duration

ongoing

Side Effects

• Rare: headache
• Mild GI discomfort at higher doses
• Insomnia if taken late

Contraindications

• Pregnancy/lactation (insufficient safety data)

Best Stacking Partners

Mechanism

Hydrophilic bile acid that stabilizes hepatocyte membranes, supports bile flow, and reduces endoplasmic reticulum stress. Often used in higher-load liver support and lipid-heavy protocols.

Contraindications

• Caution with active gallbladder obstruction