Since we're talking about Colonscopies I'll throw this subject in since MANY men will face prostate issues in their lives.

https://pubmed.ncbi.nlm.nih.gov/21244239/#:~:text=Grape%20seed%20extract%20(GSE)%20has,%25%20in%20vitro%20(P%20%3C%20.


https://www.medicalnewstoday.com/articles/269775


As always do your own research, I have been doing mine for decades and I purely offer information.

Disclaimer: Those taking drug blood thinners can't as a rule take both.