To the Editor.—
It is unfortunate that Koren et al1 in their interesting letter advised the mother to discontinue breast-feeding her infant. There is absolutely no evidence that Siberian ginseng (650 mg twice a day) taken orally by the mother would appear in her milk. Breast-feeding is important for all infants and should not be discouraged. The breast-fed infant would receive 10% less energy intake per day than a formula-fed infant, which might have helped slow the growth of this infant to a more normal level. Regulating the intake of ginseng is reasonable; stopping breast-feeding is not.