Is it ok to take grapefruit seed extract daily for a few month's in a row?

Grape or grapefruit?: Grape seed extract may help with chronic venous insufficiency, high cholesterol, reduces swelling caused by injury, helps with eye disease related to diabetes, and contains antioxidants. Grapefruit Seed Extract (GSE) is a substance derived from the seeds, membranes, and the pulp of grapefruit and is used as a broad-spectrum, non-toxic, antimicrobial product. What's the goals of therapy in UR case?