Skip to main content


Generic name: sotorasib [ soe-TOR-a-sib ]
Brand name: Lumakras
Dosage form: oral tablet (120 mg; 320 mg)
Drug class: Miscellaneous antineoplastics

Medically reviewed by on Sep 11, 2023. Written by Cerner Multum.

What is sotorasib?

Sotorasib is used in adults to treat non-small cell lung cancer who have already been treated with at least one other cancer medicine.

Sotorasib is given when the cancer has progressed or has spread to other parts of the body or when surgery is not an option.

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.

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:

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

Common side effects of sotorasib may include:

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.


Use only as directed. Tell your doctor if you use other medicines or have other medical conditions or allergies.

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.

Your doctor will perform tests to make sure sotorasib is the right treatment for you.

You may take sotorasib with or without food, but take it the same way each time.

Sotorasib is usually taken once per day. You may need to take up to 8 tablets for your entire dose. Follow your doctor's instructions.

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

Read and carefully follow the instructions provided with this medicine on how to prepare and take sotorasib if you cannot swallow tablets whole. Ask your doctor or pharmacist if you don't understand these instructions.  

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

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.

Your blood will need to be tested often and you may need medical 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.

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 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?

Ask your doctor before taking an antacid and take only the type your doctor recommends.

What other drugs will affect sotorasib?

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

Avoid taking an antacid, such as:

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.

Popular FAQ

In one clinical study with Lumakras, 45 out of 124 people (36%) saw their non-small cell lung cancer (NSCLC) tumors disappear or decrease in size by at least 30%.The median duration of response was 10 months. In another study, the 12-month progression-free survival rate was 24.8% with Lumakras vs. 10.1% with the chemotherapy agent docetaxel. Continue reading

Further 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.

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