Like IBS Problem. What shoud i do.

3 years back My misses sufferred with a stomoch irritation&admitted in kamineni hospital..they given pan injctn but same day evening she got unbearable irritation and 9 to 10 times motions.i approached gastro specialist poorna chandar rao in guntur..he told that it is reflux and given 3 months medication.after medication she was ok for about 5 months.again same problem occurred.went to asian institute there they have done endoacopy colonoscopy and biopsy and said that no prblm like reflux only and agin medication for 3 months..again 4 to 5 mnths same prblm..after which one mid night we visited local doctor he told that it is ibs and avoid the foods which makes uncomfortable but irrespective of those precation problem getting more tedious we have done many allergy tests but no use they are normal..finally by seeing reviews we approached dr anand kumar who has given enormous confidense and she was recovered..but when she is using other medicine problem getting repeating.what shoud i do..