Clotrimazole, insert one 500mg pessary at night as a single dose

or

Fluconazole* oral 150mg as a single dose

Consider genital herpes before making diagnosis of Candida infection. All topical and oral azoles give 80-95% cure. In pregnancy avoid oral azoles.

Refer to Sandyford if multiple attacks or not improving.

*Fluconazole - QTc prolongation risk. Also see BNF for drug interactions.