PaulJ on this forum introduced the idea of the ketogenic diet
I find this works well for me
Here is his post
practice a ketogenic diet in which you provide your body with sufficient ketone precursors every day. Your neurons are starved of glucose by the bacteria and need an alternative. Ketones can be made from short-chain fats and from certain amino acids, e.g. leucine and lysine. The most important step is taking 6 fluid ounces (12 tbsp) of coconut oil per day, a little every hour or two, while keeping carb intake down. (About 200-400 calories per day from starches such as white rice, sweet potato, potato, or taro is optimal. Avoid fructose - no sugar, fructose should come from berries and limited fruit only.)
Here is the brand of coconut oil I buy: http://www.amazon.com/Nutiva-Organic-Virgin-Coconut-54-Ounce/dp/B000GAT6NG/
Some other therapeutic steps:
Vitamin Di is important. If you haven't been tested you need 25OHD to be at least 40 ng/ml. I take 2500-5000 IU/day depending on season and strive to get as mid-day sun exposure on as much skin as possible. Supplement vitamin K2 with it.
Regular ketogenic fasts -- meaning that you con't eat carbs or protein other than the ketogenic amino acids, but do eat fats (especially the ketogenic short-chain fats in coconut oil) and fiber (e.g. vegetables). You can do a fast all day once a week or every day for 16 hours (e.g. confine carb/protein intake to 8 hour period each day).
Paleo dieting -- cut out all grains, legumes, and omega-6 fats as much as possible. Use saturated fat rich oils like butter or coconut oil. Eat low omega-6 meats like fish, beef, or lamb. Eat a fat-rich diet. Buy fatty cuts of meat, use plenty of oil or fat on your plant foods. (E.g. make mashed potatoes with butter or coconut oil, add egg yolks to food.) You want to keep carbs and protein together down to 20-35% of calories.
Iodine & selenium supplementation are important. High-dose iodine, working gradually up to 50 mg/day, is important for extracellular immunity. It won't fix brain infectionsi but it will stop many co-infections, heal the gut, and prevent the further spread of your infection. Start at 1 mg/day iodine, double it every 2 weeks, wait longer to increase the dose if there are side effects. It took me 4 months to get up to 50 mg/day but it was worth it. Over the course of a year or two it might be key to fixing the CFS.
Stay on the antibiotics (if you feel worse on them it means they're working, if you had no infections you wouldn't notice them). Fix your diet and supplementsi, and be patient. Here are the most important practices summarized at my blog: http://perfecthealthdiet.com/?p=134.