The duration of effects depends on the method of consumption and the amount consumed. It has been reported lasting from about 15 minutes to over 3 hours. Generally, smoked salvia effects come on quickly, peak for 5-20 minutes, and then begin to subside. The oral and sublingual methods take longer to begin effects and last longer. Although there are a small number of people who report effects lasting over 4 hours from oral/quid use, the large majority of people find most effects taper off before 2 hours.