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.
For some infections it is used in addition to other antibiotics. It can be taken by mouth or used intravenously. Common side effects include nausea, vomiting, diarrhea, and rash. Ciprofloxacin increases the risk of tendon rupture and worsening muscle weakness in people with the neurological disorder myasthenia gravis. Rates of side effects appear to be higher than some groups of antibiotics such as cephalosporins but lower than others such as clindamycin.