Absolutley, my friend. Dr. Marc Swanepoel (the naturopathic PhD who formulated the SOPC oleander based supplement line) and myself both recommend large doses of daily curcumin - 2500 mg or more - for people with brain tumors to help prevent swelling as well as fight the cancer.
Other items which may help with edema are potassium and bromelain. Also, herbal teas - especially parsley tea. Herbal teas are slightly diuretic and parsley has the advantage of also helping remove toxic heavy metals.
I take curcumin (LEF's SuperBio Curcumin) regularly, and it is one of the main things Luella reaches for, after vanilla extract, to ward off or beat migraines.