<s>[INST] Have been trying to conceive since last 1 year. Periods were always very irregular. M taking metformin sr 500 and also having thayroid .Are these medicines safe? Are there any side effects afterwards? Though I dont have diabeties still I am taking this medicine, will it increase chances of such disease in future? I am worried about me getting pregnant as well as about the future consequences of such medication [/INST] Hi, Metformin is an insulin sensitizers. It produces acidity problem which can be prevented by taking it after food. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. S.T. Balamurali, General & Family Physician </s>