Potential Pharmacokinetics and Pharmacodynamics (PK-PD) Drug-Herbs Interactions (DHI) from Metformin and Traditional Medicines: A Literature Review, Pramesthi, Asri Dwi Endah, Lukitaningsih Endang, and Nugroho Agung Endro , Pharmacognosy Journal, February 2022, Volume 14, Issue 1, p.235-244, (2022)