Flush Factor Plus® Official (en)
Fluid balance is managed by the kidneys, hormones such as arginine vasopressin, blood vessels and the heart working together. A supplement is a small input into a large system, so the sensible way to read this product is as an optional wellness purchase, not a treatment.
It is not a medicine and it is not FDA approved. The information supplied does not show that the finished blend reduces swelling, so any benefit should be treated as unproven for you personally.