Conditions and symptoms
What Does Immunocompromised Mean on a Medicine Label?
Immunocompromised · say it: IM-yoo-noh-KOM-pruh-myzdAlso written: immunosuppressed, weakened immune system, immunodeficient
Short answer
Immunocompromised describes a person whose immune system is weaker than usual, from illness or medicines, so they get infections more easily.
What it means
A person is immunocompromised when their immune system cannot fight infection as well as usual. Causes include medicines (such as chemotherapy, transplant medicines, long-term corticosteroids and biologics), conditions such as untreated HIV, some cancers, and some inherited immune disorders. Infections can be more frequent, more severe, or caused by germs that rarely affect others. A fever in someone who is immunocompromised should be reported promptly.
Labels use the word to describe who may need different care. Live vaccines, such as some shingles, MMR and yellow fever vaccines, are usually not recommended. Some medicines need longer courses or different choices for infections, and some labels warn that a medicine may be less effective or riskier in this group. Antiviral labels may list 'immunocompetent' (normal immune system) to mean the opposite group.
Immunocompromised describes the person; immunosuppression describes the state or what a medicine does.
Where you may see it
- Vaccine leaflets ('not for immunocompromised people')
- Antiviral and antifungal labels ('in immunocompromised patients')
- Oncology, transplant and HIV clinic letters
📄 How it looks on a report
Live vaccines should not be given to immunocompromised individuals.
🙅 What it does not mean
- It does not mean you cannot have any vaccines.
- It does not mean you will catch every infection.
- It is not always permanent; immune function can recover after some treatments end.
🎯 Check yourself
Which of these is the right meaning of “Immunocompromised”?
🗒️ Questions to ask your doctor
💊 Medicines whose labels mention “Immunocompromised”
Plain-English explanations of each medicine, from its official FDA label.
- Acyclovir
An antiviral medicine of the nucleoside analogue type, used against herpesviruses
- Sulfamethoxazole and Trimethoprim
An antibacterial combination of two medicines: a sulfonamide antimicrobial and a dihydrofolate reductase inhibitor antibacterial.
- Valacyclovir
an antiviral medicine. The label describes it as a deoxynucleoside analogue DNA polymerase inhibitor, and it is the hydrochloride salt of the L-valyl ester of acyclovir.
🔗 Read more from trusted sources
- “Immunocompromised” on MedlinePlus ↗
US National Library of Medicine
- NCI Dictionary definition ↗
US National Cancer Institute: “immunocompromised”
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General information about a medical word, not advice about your own results. Ask the clinician who ordered the test what it means for you.