Collinsonia appears to be a "natural remedy" derived from a plant "collinsonia canadensis L." a.k.a. stone-root, knobroot, horsebalm, richweed. It contains resin, saponin, tannin, mucilage; the usual stuff in plants. I too have been put on a diuretic in an attempt to control Menieres symptoms. The diuretic is called Diamox -- a drug which has found use in controlling the intraocular pressure of the eye in glaucoma cases. I have only been taking it for one week and still do not know if it will control my
acute symptoms. In addition, I am taking an antihistamine better known as antivert (meclazine) to control acute episodes of dizzyness (sometimes the drug does not work), that's why a combination of it and diamox is being tried. Hopefully the diamox will lower the fluid pressure in the semicircular canals as it does in the eye. Take Care.