Hi, Welcome to the forum. Your symptoms are indicative of the side effects of Rimthree ( ethambutol, isoniazid, rifampicin). This is a strong medication. While you take this medicine you should keep heed of your diet. Keep well hydrated, take a lot of soups, juice, pure hygienic water to flush out the side effects of the medicine. You should maintain the dosage prescribed by your doctor. You should also take the medicine after having a full meal. Medicine should not be taken in empty stomach. You should take high protein diet, meat, fish, legumes, nuts, dairy products balance it with fruits, veggies, berries, cereals. Rest adequately to help your digestion. Sleep well ( 7-8 hours) for better recovery. Yes, you can take bifilac tabs for support. It contains streptococcus faecalis, clostridium butyricum, lactic acid bacillus, bacilicus mesentericus. It will help to cope up with your indigestion problems. Consult your treating doctor before taking the medicine. Popping in medicines is not always helpful. Eat boiled and blanched home made food that is less oily and more nutritious. Exercise and sleep well to get faster recovery. Have a nice day, take care.