Original sentence: , but there is no evidence they have any effect.Mainly due to the poor quality of clinical research with the plant, there is no high-quality evidence that it provides any medicinal benefit and may cause adverse effects if taken together with prescription drugs
Edited sentence: However, it may cause adverse effects if taken together with prescription drugs.There is concrete evidence in form of randomized double-blind, placebo-controlled study that Ashwaganda have anti-anxiety and anti-stress effect