Herbal teas with galactogoge effects have been used extensively in recent years in order to increase the amount of breast milk in lactating mothers. Mothers of premature babies often have problems in breastfeeding and this study was designed to investigate if such herbal teas has any effect on the increasing of breast milk in mothers of premature babies. We also investigated whether a sleep-induced herbal tea (Still-Tee; Mamsel®) was effective in regulating the sleep of these mothers. Plain water was used as placebo.