Dr. Grey AI

Pyritinol

Pyritinol is two vitamin B6 molecules linked by disulfide bridge. Used in Europe (Encephabol) for dementia and cognitive decline in elderly. NOT vitamin B6 - different pharmacology, crosses BBB better. Marketed as nootropic but NO studies in healthy young adults. Some evidence in elderly cognitive impairment and rheumatoid arthritis (anti-inflammatory). NOTABLE SIDE EFFECTS: hepatotoxicity, cholestatic hepatitis, skin reactions. The risk-benefit ratio is questionable for nootropic use given side effect profile.

Quick Answer

What it is

Pyritinol is two vitamin B6 molecules linked by disulfide bridge. Used in Europe (Encephabol) for dementia and cognitive decline in elderly.

Key findings

  • Grade C: Cognitive Function in Elderly
  • Grade C: Rheumatoid Arthritis Symptoms
  • Grade D: Hangover Symptoms

Safety

  • The risk-benefit ratio is questionable for nootropic use given side effect profile.
ℹ️ Quick Facts: Pyritinol

Quick Facts: Pyritinol

  • Best Evidence:Grade C
  • Conditions Studied:2
  • Research Outcomes:4
  • Key Effect:Age-Associated Memory Impairment and Cognitive Decline (AAMCD)
Outcomes by grade:
A0
B0
C2
D2
2 conditions · 4 outcomes

Detailed Outcomes

|
C
Cognitive Function in Elderly
Several European clinical studies in elderly patients with cognitive decline or dementia suggest modest improvements in cognitive function with pyritinol (Encephabol). However, study methodologies are often weak, sample sizes are small, and many trials are older. No studies have been conducted in healthy young adults despite nootropic marketing claims.
5 studies
small↑Improves
C
Rheumatoid Arthritis Symptoms
Multiple human RCTs have investigated pyritinol's anti-inflammatory effects in rheumatoid arthritis, an unusual indication for a compound marketed as a nootropic. Some trials report modest reductions in inflammatory markers and symptom scores, though the evidence base remains limited and this use has not been widely adopted.
3 studies
small↓Improves
D
Hangover Symptoms
One older study suggested pyritinol may reduce hangover symptoms, and it has been marketed for this purpose. However, the evidence is extremely weak, the mechanism of action is unclear, and no modern replication studies exist.
1 study
small↓Improves
D
Reaction Time
Very limited evidence suggests pyritinol may improve reaction time. However, data are sparse, study details are lacking, and the clinical significance of any observed effect is uncertain.
1 study
small↑Improves

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