The investigators performed a 4-week, randomized, double-blind, placebo-controlled human trial to evaluate the efficacy and safety of InSan Bamboo Salt on improvement of Helicobacter pylori infection. The investigators measured improvement of Helicobacter pylori infection parameters , including 14C-UBT(Urea breath test), and subjects' symptoms, and monitored their blood pressure.

Inclusion Criteria:

• Males and females 19-65 years old
• 14C-UBT test ≥ 100 cpm
• Endoscopy results showing gastritis
• Able to give informed consent

Exclusion Criteria:

• Diagnosed of gastrointestinal disease such as ulcer, cancer, more than 10 erosions
• Taken antibiotics and stomach medicines such as steroid, bismuth compound, H2-receptor antagonist and proton pump inhibitor within 2 weeks
• Allergic or hypersensitive to any of the ingredients in the test products
• History of reaction to any of the test products or of gastrointestinal diseases such as Crohn's disease or gastrointestinal surgery
• History of alcohol or substance abuse
• Participation in any other clinical trials within past 2 months
• Laboratory test, medical or psychological conditions deemed by the investigators to interfere with successful participation in the study
• Pregnant or lactating women etc.