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Pycnogenol for diabetic retinopathy. A review
1Institute of Pharmaceutical Chemistry, Westfälische Wilhelms Universität Münster, Germany.
International Ophthalmology
|December 25, 2002
Summary
Pycnogenol, a pine bark extract, effectively treats diabetic retinopathy by improving vision and preventing disease progression. Studies show it
Area of Science:
- Ophthalmology
- Diabetology
- Pharmacology
Background:
- Diabetic retinopathy is a leading cause of vision loss in diabetes mellitus patients.
- Retinal microangiopathy involves vascular lesions, exudates, and hemorrhages.
- Pycnogenol, derived from French maritime pine bark, enhances capillary resistance.
Purpose of the Study:
- To review five clinical trials on Pycnogenol for diabetic retinopathy treatment and prevention.
- To assess Pycnogenol's efficacy and safety compared to existing treatments.
Main Methods:
- Analysis of five clinical trials (two open, two double-blind, one multi-center field study) involving 1289 patients.
- Studies included comparisons against placebo and calcium dobesilate.
- Data synthesis from accessible French and German reports.
Main Results:
- Pycnogenol demonstrated efficacy in halting retinopathy progression and partially restoring visual acuity.
- Treatment outcomes were comparable to calcium dobesilate.
- Improved capillary resistance and reduced retinal leakage were observed.
- Pycnogenol exhibited good tolerance with rare gastric side effects.
Conclusions:
- Pycnogenol is a safe and effective treatment for diabetic retinopathy.
- It offers a favorable outcome for the majority of patients.
- Further accessibility of study data supports its clinical application.