10 nutritious herbs you should add to your diet now Parsley. Touted for its natural diuretic properties, parsley is useful in treating fluid retention and edema, noted Sharon Zarabi, RD, CDN, CPT, bariatric program director, Lenox Hill Hospital, New York City, NY. ... Peppermint. ... Oregano. ... Basil. ... Thyme. ... Dill. ... Chamomile. ... Sage. More items... Oct 5, 2020