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Imfinzi

Imfinzi Dosage

Julia Lee, PharmD, BCOPDaisy Chau, PharmD
Reviewed by Julia Lee, PharmD, BCOP, Daisy Chau, PharmD
Last reviewed on May 5, 2026

Typical dosage for Imfinzi

Your oncology team will determine your dose and how often you receive it based on your type of cancer. You might also get other medications, like Imjudo (tremelimumab) or chemotherapy as part of your treatment.

In general, for adults weighing 66 lbs or more:

  • Non-small cell lung cancer (NSCLC)
    • That can be removed by surgery: The typical dose is 1,500 mg infused through a vein every 3 to 4 weeks.
    • That can't be removed by surgery: The typical dose is 10 mg/kg every 2 weeks OR 1,500 mg infused through a vein every 4 weeks.
    • Metastatic NSCLC: The typical dose is 1,500 mg infused through a vein every 3 weeks for 4 cycles, then 1,500 mg every 4 weeks.
  • Small cell lung cancer (SCLC): The typical dose is 1,500 mg infused through a vein every 3 weeks to 4 weeks
  • Bile duct cancer: The typical dose is 1,500 mg infused through a vein every 3 weeks for up to 8 cycles, then 1,500 mg every 4 weeks.
  • Liver cancers: The typical dose is 1,500 mg infused through a vein every 4 weeks.
  • Endometrial cancer: The typical dose is 1,120 mg infused through a vein every 3 weeks for 6 cycles, then 1,500 mg every 4 weeks.
  • Bladder cancer
    • Before surgery: The typical dose is 1,500 mg infused through a vein every 3 weeks for 4 cycles.
    • After surgery: The typical dose is 1,500 mg infused through a vein every 8 weeks.
  • Stomach cancer
    • Before surgery: The typical dose is 1,500 mg infused through a vein every 4 weeks for up to 2 cycles.
    • After surgery: The typical dose is 1,500 mg infused through a vein every 4 weeks for up to 2 cycles, then 1,500 mg every 4 weeks.

Your dose will be different if you weigh less than 66 lbs.

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