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Sappan wood and red ginger rhizome have been utilized as herbal medicine due to their anti-inflammatory, anti-oxidant, anti-microbial, analgesic, and immunomodulatory activities. Previous study revealed that sappan wood and red ginger rhizome showed good anti-inflammatory activity. However, the studies are focused on single extract. There are no research about combining the sappan wood extract and red ginger rhizome extract for antiinflammatory agent. Therefore, this study was conducted to determine the anti-inflammatory activity of the combination of sappan wood and red ginger rhizome ethanol extracts for antiinflammatory properties using red blood cell (RBC) membrane stabilization test. The tested samples consisted of sappan wood ethanol extract, red ginger rhizome ethanol extract, combination formulas (F1, F2, and F3), and positive control (diclofenac sodium). F1 comprises a 1:1 mixture of ethanol extract of sappan wood and red ginger rhizome, while F2 and F3 are composed of 2:1 and 1:2, respectively. The IC50 values for sappan wood ethanol extract, red ginger rhizome ethanol extract, and formulas F1, F2, and F3 were 47.63, 181.26, 101.93, 94.98, and 104.98 ppm, respectively. Statistical analysis using the one-way Anova followed by the Games-Howell post-hoc test revealed a statistically significant difference (p < 0.05) in the IC50 of each sample. For single extracts, sappan wood is better as an anti-inflammatory. Meanwhile, in the formulations, Formula F2 is superior as an anti-inflammatory agent
Tukiran et al. (Sun,) studied this question.