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Generic name: sotorasib [ soe-TOR-a-sib ]
Brand name: Lumakras
Dosage form: oral tablet (120 mg)
Drug class: Miscellaneous antineoplastics

Medically reviewed by on Jul 13, 2021. Written by Cerner Multum.

What is sotorasib?

Sotorasib is used to treat non-small cell lung cancer that is advanced or has spread to other parts of the body (metastatic) after treatment with at least one cancer medicine.

Your doctor will make sure you have the correct tumor type to be treated with sotorasib.

Sotorasib may also be used for purposes not listed in this medication guide.


Follow all directions on the label and package. Use exactly as directed.

Before taking this medicine

Tell your doctor if you have ever had:

It is not known if sotorasib will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant.

Do not breastfeed while using sotorasib, and for at least 1 week after your last dose.

How should I take sotorasib?

Follow all directions on your prescription label and read all medication guides or instruction sheets. Use the medicine exactly as directed.

Take the medicine at the same time each day, with or without food.

You may need to use up to 8 tablets for your entire dose. Follow your doctor's dosing instructions very carefully.

Swallow the tablet whole and do not crush, chew, or break it.

If you cannot swallow a tablet whole, place it into a glass with 4 ounces of plain water. Stir until the tablet is dispersed (it will not dissolve completely) and drink this mixture right away or stir it again and drink it within 2 hours. Do not chew the tablet pieces. Add 4 ounces more water to the glass, swirl gently and drink right away.

If you vomit shortly after taking sotorasib, do not take another dose. Take your next dose as scheduled.

You will need frequent blood tests to check your liver function. Your dose or medication schedule may be changed based on the results.

Store at room temperature away from moisture and heat.

What happens if I miss a dose?

Use the medicine as soon as you can, but skip the missed dose if you are more than 6 hours late for the dose. Do not use two doses at one time.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

What should I avoid while taking sotorasib?

Avoid taking a stomach acid reducer, such as:

If you take an antacid (such as Maalox, Milk of Magnesia, Mylanta, Pepcid Complete, Rolaids, or Tums), take your sotorasib dose 4 hours before or 10 hours after taking the antacid. Use only the type of antacid your doctor recommends.

Sotorasib side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Sotorasib may cause breathing problems that could lead to death. Get emergency medical help if you have new or worsening fever, cough, or shortness of breath.

Sotorasib may cause serious side effects. Call your doctor at once if you have:

  • severe ongoing nausea, vomiting, or diarrhea; or

  • liver problems--nausea, vomiting, loss of appetite, stomach pain (upper right side), tiredness, bruising or bleeding, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes).

Your cancer treatments may be delayed or permanently discontinued if you have certain side effects.

Common side effects of sotorasib may include:

  • nausea, diarrhea;

  • cough;

  • liver problems;

  • pain in your bones, joints, or muscles;

  • tiredness; or

  • abnormal lab tests.

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.

Sotorasib dosing information

Usual Adult Dose for Non-Small Cell Lung Cancer:

960 mg orally once a day
Duration of therapy: Until disease progression or unacceptable toxicity

-This indication is approved under accelerated approval based on overall response rate and duration of response; continued approval may depend on verification and description of clinical benefit in confirmatory trial(s).

Use: For the treatment of patients with KRAS G12C-mutated locally advanced or metastatic non-small cell lung cancer (NSCLC), as determined by an FDA-approved test, who have received at least 1 prior systemic therapy

What other drugs will affect sotorasib?

Sometimes it is not safe to use certain medications at the same time. Some drugs can affect your blood levels of other drugs you take, which may increase side effects or make the medications less effective.

Other drugs may affect sotorasib, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell your doctor about all other medicines you use.

Where can I get more information?

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.