Tavaborole is a boron-based pharmaceutical agent indicated for the topical treatment of toenail onychomycosis, a fungal infection of the nail and nail bed due to Trichophyton rubrum or Trichophyton mentagrophytes infection. Tavaborole acts by inhibiting an aminoacyl-transfer ribonucleic acid (tRNA) synthetase (AARS) - Leucyl-tRNA synthetase. Leucyl-tRNA synthetase is an essential fungal enzyme required for protein synthesis and for the catalysis of ATP-dependent ligation of L-leucine to tRNA(Leu). Tavaborole’s low molecular weight (approximately half of most antifungals, such as terbinafine and efinaconazole) permits optimal nail plate penetration, superior to that of existing topical antifungal medications.