So long as the red blood cells are not transporting oxygen, there will probably be no major improvement in health. Therefore, time and safety have to be weighed against tissue breakdown, fermentation and toxicity, and growth of the cancer. Nettles or yellow dock are additional alternatives, but they, too, are usually slower in action. When the weaknesses related to blood deficiency are mild, these simpler herbs can probably be used effectively. When, however, the blood has been massively destroyed by cytotoxic drugs, it may be expedient to go with something swift.
Research indicates that yellow dock improves the assimilation of iron.