What is Oligomeric Procyanthocyanidins (OPC)?

Category: Supplements

Most popular types: Terry Naturally Clinical OPC


Oligomeric Procyanthocyanidins (OPC) are derived commercially from grape seeds and the bark of pine trees, is a mixture of antioxidant molecules. It is one of the most potent antioxidants known that increases the structural strength of weakened blood vessels.

Reported purpose & perceived effectiveness
Purpose Patients Evaluations Perceived Effectiveness
Amyotrophic lateral sclerosis 1 0
General health 1 0
Increase effect of another treatment 1 0
Inflammation 1 0

  • Major
  • Moderate
  • Slight
  • None
  • Can't tell


Stopped taking Oligomeric Procyanthocyanidins (OPC)

Duration Patients
1 - 6 months 1
Last updated:
There are no evaluations for Oligomeric Procyanthocyanidins (OPC).