"Kratom is one of the most effective and pleasurable psychoactive herbs available. The effects last for 4 to 6 hours. When large doses are taken, some residual effects may linger for several hours longer. In low doses it induces mild euphoria and reduces fatigue. Low doses do not interfere with most ordinary activities, however, one should not drive or perform other activities that require full attention. The effects are profoundly euphoric and immensely pleasurable.