“…A new combination of AML, IND and PRN, with complementary activities, is used to control blood pressure in patients with arterial hypertension (Nedogoda & Stojanov, 2017; Scheen, Lancellotti, & Krzesinski, 2014). Several analytical methods have been described for simultaneous determination of AML, IND and PRN in pharmaceutical formulations (El‐Bagary, Elkady, Mowaka, & Attallah, 2017; Karadurmus, Gümüştaş, Kurbanoğlu, Uslu, & Özkan, 2018; Patel et al, 2020). Determination of AML in plasma alone or with other drugs was done by LC–MS/MS methods (Chen, Luan, Zhong, & Zong Min, 2001; Sathe, Venitz, & Lesko, 1999; Shah et al, 2017; Sirikatitham, Panrat, & Tanmanee, 2008; Streel, Lainé, Zimmer, Sibenaler, & Ceccato, 2002; B. Wang, Sheng, & Li, 2015; L. Wang, Liu, Zhang, & Tian, 2018; Wei, Yang, Qi, & Chen, 2009; Yacoub, Awwad, Alawi, & Arafat, 2013; Zheng, Wu, & Shao, 2006; Zou, Zhan, Ge, Wei, & Ouyang, 2009).…”