An incomplete list of generic Fenoglide side effects would include the following: abnormal liver function tests, respiratory problems, abdominal pain, back pain, headaches, constipation, nausea, runny or stuffy nose, signs of liver damage, (for example: yellowing of the whites of the eyes or skin, upper-right abdominal pain, dark urine, high liver enzymes), muscle pain, tenderness, or weakness, signs of gallbladder or pancreas problems (for instance: abdominal pain, nausea, vomiting), significant, unexplained changes in the amount of urine produced, easy bruising or bleeding, frequent infections, signs of a blood clot in the legs, signs of a blood clot in the lungs, signs of an allergic reaction, like an unexplained rash, itching, hives, wheezing or difficulty breathing, swelling of the mouth, tongue, or throat.