This is not required for safety but smooths the transition
However, whether it is harmful or beneficial for subjects with mild cardiovascular diseases or even those without clinical manifestations is still controversial, likely because of the following reasons: (i) similar strains of mice in different studies from different suppliers differ in baseline bacterial gut microbiome, diet (e.g., different choline levels), age of the mice, animal housing conditions, and duration of the experiment
H.FrydlandM.Winther-JensenM.et al (2018)
News Release May 10, 2018 Big Differences Found Among Green Teas -- ConsumerLab Tests Identify Best Green Tea in Bags, Matcha, Supplements, and Bottles -- White Plains, New York, May 10, 2018 The benefits of green tea use are associated with the presence of natural polyphenols known as catechins, such as EGCG
As of November 2025, Lillys Mounjaro held 86% of the market share in doses, while Wegovy held the rest