How long does CBD take to take effect?

As documented in current literature, the fastest effect is achieved through inhalation (5-10 minutes), while with oral administration, there is an increase in CBD plasma concentration after about 1 hour (likely onset of CBD effects), reaching its peak around 3 hours. Subsequently, elimination via feces and urine begins. In a research study, the peak of CBD in urine after oral administration of >150mg was recorded after 6 hours. Therefore, it can be inferred that CBD effects last at least 6 hours.