Carvacrol administration with different doses (25, 50 and 75 mg/kg) exerts a cardio‐protective role against cardiac‐hypertrophy of male Wistar rats via increasing catalase and mRNA expression (Jamhiri et al., 2019; de Souza Polli et al., 2019; Shahrokhi Raeini et al., 2018). The gene discussed is CAT; the disease is cardiac hypertrophy.