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.
Side effects of inhaled corticosteroids are uncommon at the usual dose. Side effects (many of which occur only with high doses) may include: 1  Sore mouth, sore throat, or hoarseness. 2  Cough and spasms of the large airways (bronchi). 3  Fungus infection in the mouth (thrush). 4  Very slight reduction in growth. 5  Decreased bone thickness in adults.