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.
However, homeopathic preparations are not held to the same safety and effectiveness standards as conventional medicines. Oscillococcinum is used for symptoms of influenza infections (the flu ) and H1N1 (swine) flu. However, in people with flu symptoms, there is some evidence that oscillococcinum might help people get over the flu faster, but only by 6 or 7 hours. 2  This may not be of much importance. 3  The reliability of this finding is also questionable due to flaws in the study design.