Hello, Its good that you are recovering from pulmonary tuberculosis. You said you are gaining weight recently but Rcinex doesn’t cause weight gain as it’s a side effect. So, about the weight gain, I would suggest you consult a dietician. A diet chart made by dietician is beneficial especially when you are recovering from an illness where your body needs necessary nutrients to gain immunity and energy back. You want to lose weight so a balanced diet currently is the best option along with little exercise if your doctor permits you to do so is advisable. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr Manisha Auradkar, General & Family Physician