There is no standard recommended dosage for eleuthero. How the herb is used depends on the formula, form, and the benefit being sought.
The herb is not considered safe for use in children. For people over the age of 18, typical dosage and other recommendations include:
take between 300- and 1,200-mg daily, not exceeding 3- to 6-grams
take in the morning to avoid disrupting the sleep cycle
take doses between meals
take the supplement for no more than 6 weeks continuously followed by at least a 2-3 week break
It is important to talk with a doctor before taking herbal supplements. It can be helpful to take the bottle or product packaging for reference.