Hello, The medication is called Fluconazole. Diflucan is the US brand name of a tablet that is swallowed . The medication is available by prescription. Dosage and length of use is determined by your doctor. This can vary and must be confirmed for your circumstances. Fluconazole may be given as a liquid, tablet or capsule. For oral thrush, popular alternative rinses or lozenges, are Clotrimazole, Nystatin, Itraconazole and Ketoconazole. There are combination solutions called magic mouth that vary in composition with an anti-fungal medicine, anti-inflammatory medicine and possibly pain medication to help treat thrush and provide symptom relief. Concerns with other medications you may be taking must be considered. I see you have a condition with cancer. You must confer with your doctor to follow the medication as directed. The pharmacy can clarify all details with the doctor and will clearly label the medication with instructions. Thank you for contacting HealthcareMagic. I am glad to offer further assistance and hope you will be able to fill your prescription soon. I hope you find my information useful. Iam sorry, but I do not know your location to make recommendations on cost saving locations for this medicine.