FRCSC stands for Fellow of the Royal College of Surgeons of Canada. Suggest new definition. This definition appears very rarely and is found in the following Acronym Finder categories: 1  Organizations, NGOs, schools, universities, etc.
Naproxen Side Effects. Several different side effects can occur with the use of naproxen. Those that were most commonly reported in clinical trials included stomach pain, constipation, and drowsiness. People who use this pain-relief medicine may also have a higher risk of heart attack or stroke.
Long-Term Effects of Painkillers. There are a number of unpleasant side effects associated with painkiller abuse. Mild side effects include nausea, vomiting, and diarrhea, usually caused by the way the drug interacts with opioid receptors along the digestive tract.he long-term effects also depend on how the drug is taken. Crushing and injecting the tablet into the bloodstream can cause long-term heart damage and other cardiovascular issues, and can increase the likelihood of a heart attack.