Ginkgo Biloba, the maidenhair tree, is not recommended for women before menopause as it increases bloodflow and can result in heavy periods as the lining of the uterus becomes enlarged. In later years it is considered beneficial for assisting bloodflow to the brain, and presumably anywhere else where it might be lacking.
I take a small amount as it has helped my feet since the Astra Zeneca Covid jab resulted in my lower legs and feet swelling rather alarmingly and becoming a nasty purplish colour. I don't take it all the time, but when my shoes start to feel tight I remind myself about it. In a day or so the swelling subsides.
As I do no t know if the extra bloodflow is due to relaxation of the bloodvessels or an increase in the pressure, it would be wise to seek further information of the exact nature of its effect, particularly if background retinopathy is involved.