If suffering from a thyroid illness, take only under professional supervision. It is possible to froth at the mouth to death. External use is safe. Ephedrine-type alkaloids strongly stimulate the central nervous system. Khat produce an effect somewhat similar to that of coca leaves.
Withdrawal can produce lethargy.
In Africa, it is taken in old age, stimulating and improving mental function. Khat is used in Germany to counter obesity. Khat may cause headaches, raised blood pressure, and general over-stimulation if used more than a few weeks at a time. Do not take during pregnancy. Super Dieter's Tea, found in most grocery stores, suppresses the appetite and has a diuretic effect which purges the body through the intestinal tract.