Hi.. Can understand your concern.. As per your query Tramadol is a Narcotic painkiller used to control moderate to severe pain conditions. There are few common side effects of tramadol like nausea, dizziness, lethargy, anxiety, confusions, rashes. There are few other less common side effects like Swelling on face and mouth, seizures, severe rashes,excessive weakness,breathing problems etc. In case you have any you should immediately stop the medicine and consult your doctor. But as you have the query about side effects after stopping the drug, so i would like to tell you that tramadol comes under a group of NARCOTIC painkillers so long term intake of tramadol can lead to ADDICTION Other thing is that excessive intake of tramadol above the recommended dosage can lead to OVERDOSAGE and even death. So tramadol should be taken cautiously by following the prescription given by the doctor and for a short specified time span. Hope your query is solved.. Thanks and regards.. Dr.Honey Nandwai Arora.