When taking Kava Kava start with a dose of 70 to 200 mg per day. Its best to take in the evening since it can cause drowsiness. The actual amount you need to take will depend on the amount of Kavalactones in the brand you purchased. Most common brands in the US have between 30% and 70% concentrations of Kavalactones.
It is important to take time off from using Kava. Its recommended to use Kava four times per week and take one week off every month to prevent building up a tolerance. Discontinue use if any adverse side effects from Kava arise.