Dandelion can be taken in tablet, tea, or tincture form. Dandelion may cause increased stomach acidity and ulcer pain. If you have gallstones or biliary tract obstructions, you should avoid this herb. Dandelion should not be used as a substitute for pharmaceutical diuretics for hypertension. Read more about dandelion. From Prescription for Herbal Healing by Phyllis Balch, Copyright © January, 2002, Avery Books, a member of Penguin Putnam, Inc., used by permission.