Very commonly reported side effects (at least 1 in every 10 patients): irritation or redness at the site of injection, headache, tired feeling, shaking chills, fever, flu-like symptoms, cough, weakness, loss of weight, dizziness, nausea, loss of appetite, diarrhoea, stomach pain, vomiting, dry mouth, muscle aches, pain in joints and muscles, feeling depressed or irritable, trouble falling asleep or staying asleep, feeling anxious or nervous, difficulty concentrating, mood swings, virus infection, hair loss, itching, dry skin, rash, pharyngitis (sore throat), shortness of breath, and decreases in the number of red blood cells or certain white blood cells called neutrophils that fight infection.