Treating the yeast is one of the most important parts of treating CFS/FMS, chronic sinusitis, or spastic colon. Though it takes 5 months to restore balance, you'll be feeling much better after 1 month on the Diflucan anti-fungal medication. If your physician won't prescribe it, see a Fibromyalgia and Fatigue Center physician or a Board Certified Holistic Physician. You'll be glad you did!