Canesten Thrush Duo Oral Capsule & External Cream Canesten Thrush Duo Oral Capsule & External Cream is a complete & convenient treatment for vaginal or penile thrush, containing a single dose treatment to clear the infection & a cream to provide fast, effective relief from the external symptoms. Both products contain antifungal agents to fight the cause of infections such as thrush: Canesten Oral Capsule: contains fluconazole 150mg. Canesten Thrush Cream: contains clotrimazole 2%. Canesten Thrush Duo Oral Capsule & External Cream should only be used if you have been previously diagnosed by your doctor as having thrush.