Cupronickel or copper-nickel is an alloy of copper that contains nickel and strengthening elements, such as iron and manganese.
Despite the low risk of side effects, it's important to take caution when using Oscillococcinum in treatment of the flu. Because the flu virus can lead to complications like pneumonia (a potentially life-threatening condition), you should seek medical attention if you experience flu symptoms such as coughing, sore throat, muscle aches, fatigue, headache, and high fever.
Here is a specific list of the most likely side effects you may experience after the colonoscopy in (more or less) chronological order: 1  Severe dehydration. 2  Intoxication and food poisoning. 3  Esophageal, gastric, duodenal, and intestinal obstructions. 4  Colorectal bleeding. 5  Diarrhea. 6  Small, hard stools. 7  Flatulence, bloating, abdominal cramps.