Get emergency medical help if you have signs of an allergic reaction to Tecentriq (hives, difficult breathing, swelling in your face or throat) or a severe skin reaction (fever, sore throat, burning eyes, skin pain, red or purple skin rash with blistering and peeling).
Some side effects may occur during the injection. Tell your caregiver right away if you feel dizzy, light-headed, chilled or feverish, itchy, tingly, or have neck or back pain, trouble breathing, or swelling in your face.
Call your doctor at once if you have:
new or worsening cough, shortness of breath;
chest pain, irregular heartbeats;
swelling in your ankles;
severe stomach pain, nausea, vomiting, diarrhea, bloody or tarry stools;
liver problems - right-sided upper stomach pain, loss of appetite, drowsiness, easy bruising or bleeding, dark urine, jaundice (yellowing of the skin or eyes);
nervous system problems - neck stiffness, increased sensitivity to light, confusion, severe muscle weakness, numbness or tingling in your hands or feet, vision problems, eye pain or redness;
signs of infection - fever, flu symptoms, cough, back pain, painful or frequent urination; or
signs of a hormonal disorder - frequent or unusual headaches, dizziness, feeling very tired, mood or behavior changes, hoarse or deepened voice, increased hunger or thirst, increased urination, constipation, hair loss, feeling cold, weight gain, or weight loss.
Your cancer treatments may be delayed or permanently discontinued if you have certain side effects.
Common Tecentriq side effects may include:
nausea, vomiting, loss of appetite;
diarrhea, constipation;
anemia, fever, infections;
cough, feeling short of breath;
liver problems;
mouth sores or swelling;
high blood pressure, abnormal blood or urine tests;
headache, tiredness, weakness
joint, muscle, or bone pain;
numbness or tingling in your hands or feet;
swelling in your legs or arms;
rash, itching, sunburn or being more sensitive to sunlight; or
hair loss.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
 Tecentriq side effects (more detail)
