How long are such herbal supplements usually taken, and when should results be expected? — Evening drazheed N 120 (Вечернее с пустирником)

The card does not state the duration of use or when an effect appears. Regimen: adults 3 dragees 3 times a day with meals in the second half of the day. The short description promises a calming effect and help with falling asleep, but gives no confirming data.

General information (not a manufacturer's instruction): if sleep problems or stress persist, a doctor's consultation is needed.