“…Apparently, the free radical scavenging property of drugs may contribute to reduce the progression of such oxidative damage to gastric mucosa (Bhattacharya, Chaudhuri, Chattopadhyay, & Bandyopadhyay, 2007; Oyagi et al., 2010). It has been accepted that free radical scavengers exert protective functions on mucosal damage triggered by excessive production of free radicals (Ahn et al., 2001; Cantürk, Cantürk, Ozbilim, & Yenisey, 2000; La Casa, Villegas, Alarcón de la Lastra, Motilva, & Martín Calero, 2000; Yoshinaga, Ohtani, Harada, Fukuda, & Nawata, 2001). Therefore, potent antiulcer agents derived from natural herbs, such as Artemisia asiatica (DA‐9601; Stillen ™ , Dong‐A Pharmaceuticals, Yongin, Korea), are being sold in markets based on their potent antioxidant effects (Baek et al., 2011).…”