As you have rheumatoid arthritis[RA] since 13 years and have developed rheumatoid lung; you have been prescribed these drugs. Out of above drugs, only Defza is steroid
. This steroid will take care of your lung problems due to RA.
So you can not stop it. It will not cause you other harm, but rather will protect you.
is to reduce inflammation due to RA and Razo
is to prevent acidity caused by above 2 drugs.
So you need not worry as these drugs will not harm you and needs to continue for RA care.