<s>[INST] Am having irregular periods for the past one year. Last month my endometrium was thickened and i underwent a DNC. After that ,my doctor gave me REGESTORNE tablet through which i got my periods this month. Now my doctor has given me NOVELON tablets for 3 cycles to regularise my periods. Is it safe to use Novelon tablet? Am scared whether i ll put weight if i take the tablet. Will i not get my periods regularly without using Novelon tablets? [/INST] Hello, Any medication have little side effects. Same as the drug navelon may cause: 1.Spotting between periods (breakthrough bleeding). 2.Possible weight gain or fluid retention. 3.Breast swelling or tenderness. 4.Nausea or upset stomach 5.Mood changes. So don't worry if you observe above side-effects then you may consult treating doctor she may change or treat with alternative medication. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr. Penchila Prasad Kandikattu </s>