MY SON 25 YEARS HEIGHT 5 . 8, WEIGHT 78, WAS DETECTED WITH LUNG t.b 5 yars back. he does not smoke.Zeed 4 was prescribed. I doubt whether he continued without fail for the 9 months prescribed. Later HE HAD TO UNDERGO A STOMACH SURGERY AND HIS COLON HAD TO BE CUT SINCE THERE WAS A MASS WHICH ON BIOPSY WAS DETECTED AS HEALED t.b. again after 5 years he coughed on taking hot tea in the morning . sputum was tinged with blood. and later mouth full of blood came on coughing. xray was clear. but on ct scan a small cavity 8 mm was detected in the upperlobe exactly in the same positio where he had had t.b formerly.so doctor started akt 4. when he had t.b before there was considerable weight loss and was had no immunity. but now he has good weight perhaps overweight and is not sick at all. But doctor stated anti t.b to avoid risk. i think doctors are divided on dosage. when one doctor says he can reduce the dosage after 3 months the doctor who knows the prior history better is of opinion that he shuld take the medicine intensive course for 5-6 months and then continuing course for another 6 months. any side effect? also i came across a different opinion that he is not having T.B AND THE BLEEDING MAY HAVE BEEN DUE TO SOME CAPILLERY BRAK FROM THE PREVIOUSLY AFFECTED PART. I AM CONFUSED CAN U HELP?