Sapienic acid sodium is a fatty acid commonly found on the skin and in mucosa. Sapienic acid sodium has variable antimicrobial activities against Gram-positive and Gram-negative bacteria found on the skin and in the oral cavity. Sapienic acid sodium is active against Streptococcus sanguinis, Streptococcus mitis and Fusobacterium nucleatum with MBC values of 31.3 μg/mL, 375.0 μg/mL and 93.8 μg/mL, respectively.