I was diagnosed with SIBO in September after taking a very strong or broad acting antibiotic for a UTI. I took two rounds of Flagyl and one of another expensive antibiotic called Alinia. They all helped temporarily but I kept relapsing after a week. What has ultimately helped me is to follow a Low FODMAP diet, low in complex carbs, sugar, no gluten, no lactose, etc. I tried it on my own at first and it was a total disaster until I went to a nutritionist. To start out, cut out gluten and milk products from your diet. No wheat and no grains or many of the foods they tell you to eat when your tummy is upset. No rice or potatoes or pears or apples or apple sauce and no Jello. You can start to slowly reintroduce foods once you feel better. I have now been fairly symptom free for nearly two months. In my case, I had diarrhea multiple times per day, gas and cramping and lost 20 pounds. Please read about low FODMAP diet and SCD diet. Much information is available over the internet. It has literally saved me from misery.