The investigators performed a 4-week, randomized, double-blind, placebo-controlled human trial to evaluate the efficacy and safety of Heme-Iron Polypeptide on Improvement of Anemia. The investigators measured Improvement of Anemia parameters , including hemoglobin, transferrin saturation, serum iron, and ferritin, and monitored their blood pressure.

Inclusion Criteria:

• Males and females 19-60 years old
• Hemoglobin concentration less than 13g/dL(men), 12g/dL(women)
• Able to give informed consent

Exclusion Criteria:

• 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
• Participation in any other clinical trials within past 2 months
• History of alcohol or substance abuse
• Laboratory test, medical or psychological conditions deemed by the investigators to interfere with successful participation in the study
• Pregnant or lactating women etc.