NAC vs PQQ
A side-by-side research comparison of NAC and PQQ across mechanism, dosing, half-life, benefits, side effects and research status.
Comparison table
| Attribute | NAC | PQQ |
|---|---|---|
| Full name | N-Acetyl Cysteine | Pyrroloquinoline Quinone (BioPQQ) |
| Category | Detox & Antioxidant | Detox & Antioxidant |
| Status | Dietary supplement / FDA-approved (Mucomyst) | Dietary supplement (GRAS) |
| Mechanism | Provides cysteine for glutathione synthesis (rate-limiting step). Directly scavenges free radicals via sulfhydryl group. Chelates mercury, lead, and arsenic. Modulates glutamate via system Xc- transporter for neuropsychiatric effects. | Activates PGC-1α (master mitochondrial biogenesis regulator) via CREB phosphorylation. Catalytic antioxidant that undergoes 20,000+ redox cycles vs one-time use of vitamin C. Stimulates NGF synthesis for neuroprotection. |
| Molecular weight | 163.19 Da | 330.21 Da |
| Half-life | ~5.6 hours | ~3-5 hours |
| Bioavailability | ~6-10% oral (poor but effective due to GSH replenishment) | ~60% oral |
| Typical dose | 600-1800 mg | 10-20 mg |
| Frequency | 1-2x daily | Daily |
| Route | Oral capsule or IV (hospital) | Oral capsule |
NAC reported benefits
- Glutathione replenishment
- Liver protection (acetaminophen, alcohol)
- Heavy metal chelation
- Mucus thinning (respiratory)
- OCD/addiction support
- Anti-inflammatory
PQQ reported benefits
- Mitochondrial biogenesis (new mitochondria)
- Potent antioxidant (catalytic)
- Nerve growth factor stimulation
- Improved sleep quality
- Enhanced cognitive function
- Cellular energy optimization
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Research and educational reference only. Not medical advice.