Hello, Fertisure M is a combination medicine used in the treatment of nutritional deficiencies. It supplements the deficient nutrients and increases the quantity and motility of sperms in males. As you have asked about the side effects,let me tell you that like other medicines Fertisure M too has it s side effects but all these are non specific such as nausea, vomitting, stomach pain etc. You should understand that it s benefits re far more greater than it s adverse effects. Continue with this medicine as advised by your doctor. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Prabhash Verma, General & Family Physician