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The prevalence of gastritis in South Korea is rapidly increasing owing to the prevalence of  Helicobacter pylori  infection and fast eating habit. The usual treatment for acute gastritis following a long intake of non-steroidal anti-inflammatory drugs (NSAIDs) or alcohol is to stop the causal factors. Metronidazole and lansoprazole are recommended for the treatment of  H .  pylori  infection gastritis. Omeprazole a proton pump inhibitor, is used to decrease gastric acid production. However, owing to the side effects and refractoriness of the drug, a safe and efficient treatment is required. Plant-derived phytochemicals have emerged as novel agents against chronic disorders. In this study, firstly, to explore the potential of pharmacological activities, including efficacy and mechanisms of  Cinnamomum cassia  against gastritis, a literature review was performed based on 20 studies out of a total of 749 records obtained using a search strategy. From the literature review, the therapeutic targets of  C. cassia  extract and cinnamaldehyde, a compound of  C. cassia,  were found to be related with NFκB activity, and their signaling pathway were verified by experiments.  C. cassia  extract plays a role in protection of gastric ulcers induced in four ways (immersion stress-induced, ethanol-induced, hydrochloric acid-induced, or NSAIDs-induced ulcer). None of the clinical studies on  C. cassia  extracts or compounds met our criteria. When the standardized extract of  C. cassia  (ECC) was orally administered repeatedly to Beagle Dog for 4 weeks, no toxicologically harmful changes were observed. Therefore, under the test condition, the no observed adverse effect level (NOAEL) of ECC was judged to be 1000 mg/kg/day for both sexes, and no toxic target organ was observed. Administration of ECC in the Sprague–Dawley rat model of acute gastric injury caused by indomethacin administration significantly increased gastric mucus volume. Administration of ECC in the acute gastric injury model caused by indomethacin administration is considered effective in improving gastric injury. However, research and efforts to develop a reliable ‘standardization of natural drugs’ by establishing the best quality evaluation system are limited. Despite the pharmacological potential of ECC, further well-designed experimental studies such as in vitro, in vivo, and clinical trials are required to validate these findings and the underlying mechanisms of ECC.

Potential and beneficial effects of Cinnamomum cassia on gastritis and safety: Literature review and analysis of standard extract