Drug interactions
Didanosine + Efavirenz
Severity: Minor
Didanosine and Efavirenz: minor interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Both drugs can cause hepatotoxicity, so combined use may increase liver injury risk, though pharmacokinetic interaction is not clinically significant. Didanosine is also linked to hepatic steatosis and noncirrhotic portal hypertension.
What this interaction means in plain words
Didanosine and Efavirenz have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Didanosine belongs to Anti Virals; Efavirenz belongs to Anti Virals.
Why it happens
Additive hepatotoxicity.
What to do
Monitor liver enzymes periodically, particularly in patients with hepatic disease or hepatitis coinfection.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Didanosine
- Didanosine + Elvitegravir / cobicistat / emtricitabine / tenofovir df Contraindicated
- Didanosine + Hydroxycarbamide Contraindicated
- Didanosine + Ribavirin Contraindicated
- Didanosine + Stavudine Contraindicated
- Allopurinol + Didanosine Major
- Atidarsagene autotemcel + Didanosine Major
Other interactions of Efavirenz
- Cobimetinib + Efavirenz Contraindicated
- Dienogest / estradiol valerate + Efavirenz Contraindicated
- Dihydroergotamine intranasal + Efavirenz Contraindicated
- Dihydroergotamine + Efavirenz Contraindicated
- Doravirine + Efavirenz Contraindicated
- Efavirenz + Elbasvir / grazoprevir Contraindicated
Frequently asked questions
Can I take Didanosine with Efavirenz?
MediHelp rates the interaction as minor. Didanosine and Efavirenz have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Both drugs can cause hepatotoxicity, so combined use may increase liver injury risk, though pharmacokinetic interaction is not clinically significant. Didanosine is also linked to hepatic steatosis and noncirrhotic portal hypertension.
How serious is the interaction between Didanosine and Efavirenz?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor liver enzymes periodically, particularly in patients with hepatic disease or hepatitis coinfection.
What other medicines interact with Didanosine?
MediHelp also lists interactions of Didanosine with, for example, Elvitegravir / cobicistat / emtricitabine / tenofovir df, Hydroxycarbamide, Ribavirin. The full list is on the Didanosine page.
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