Dear friend, did you do the analysis to look if maybe you suffer cause celiac disease? Usually, it's a particular blood analysis. If it doesn't work, endoscopy detects celiac disease. And calprotectin analysis should detect if it's Crohn disease. As your children suffer from the same allergies/intolerances, it looks like inherited disease. Do pre and probiotics help? I purchase pre and probiotic made of kefir and they work (well, I'm constantly in power down mode to purchase my drugs).