I bought this supplement for a husband. It takes a week. Because to achieve a positive effect requires prolonged use of not less than 5 months, about the results too early. From pluses: 300 capsules are designed for 5 months of continuous use, ie to receive a course - profitable volume capsules are quite large (some may have a problem if swallowed), there are no side effects from the gastrointestinal tract (when receiving a similar domestic product there is a serious disorder). Due to the lack of tangible benefits, and side effects are well appreciate.