In cell-based assays, two compounds─dexlansoprazole and citalopram─disrupted the G3BP1-N interaction with minimal cytotoxicity. Both compounds showed antiviral activity in human lung epithelial cells infected with either the WA strain or an Omicron (BA.1) strain of SARS-CoV-2. This work establishes a strategy to modulate SGs by targeting a host-virus PPI, highlighting G3BP1 as a potential therapeutic node for antiviral intervention.