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.
Serious side effects of budesonide include but are not limited to: 1  Cushing's syndrome (more likely with long-term use) 2  Decreased function of adrenal glands (more likely with long-term use and higher doses) 3  Pressure in the space between the skull and the brain.