— broccoli sprout extract is the primary supplement source of sulforaphane (or its precursor glucoraphanin). 3-day-old broccoli sprouts contain 20-50x more glucoraphanin than mature broccoli. Avmacol® and Prostaphane® are standardized broccoli sprout extracts. --- *Reviewed by the Dose AI Research Team and Clinical Advisory Board* *Last updated: 2026-04-06*
Reviewed by the Scan Dose Research Team and Clinical Advisory Board | Last updated:
Not medical advice. Based on published clinical research and systematic reviews.