Mesuol has antioxidant activity, it shows very high scavenging activity against DPPH radical; it also has immunomodulatory activity, can potentiate percentage neutrophil adhesion in neutrophil adhesion test in rats and phagocytosis in carbon clearance assay. Mesuol can suppress HIV-1 replication in Jurkat T cells, it inhibits TNFα-induced HIV-1-LTR transcriptional activity by targeting the nuclear factor-κB (NF-κB) pathway.