Pibrentasvir and Acarbose: Interaction Details
AI-assisted, pharmacist-reviewed · AI content regenerated Jul 11, 2026 · Source data updated Jul 10, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Acarbose
Pibrentasvir
No brand names on record
How we grade severity & evidence
Severity levels
- Contraindicated: These should generally not be used together.
- Major: Potentially serious — often needs a change or close monitoring.
- Moderate: Can be significant — usually manageable with monitoring.
- Minor: Usually limited clinical impact.
Evidence grades
- Established: Well documented — supported by controlled studies or strong clinical data.
- Probable: Good supporting evidence, though not definitively proven.
- Suspected: Some evidence suggests this interaction, but it is not well established.
- Possible: Limited or conflicting evidence; the interaction may occur.
- Theoretical: Predicted from the drugs' pharmacology; not yet confirmed in people.
Ratings come from the documented interaction literature and are reviewed by a pharmacist. They describe the documented risk of the combination, not what will necessarily happen to you — your dose, timing, and health picture all matter.
You're taking acarbose for your blood sugar and pibrentasvir (part of a hepatitis C treatment). Here's the key idea: as the hepatitis C treatment works and clears the infection, your liver often starts working better. A healthier liver can change how your body handles blood sugar, and some people have ended up with low blood sugar (hypoglycemia), sometimes serious.
The good news is this is very manageable. Watch for signs of low sugar like shakiness, sweating, dizziness, or confusion. Check your blood sugar more often during treatment, and your care team can adjust your diabetes medicine as needed. Please don't stop anything on your own, just talk with your pharmacist or doctor.
Effect: Risk of altered glycemic control with symptomatic, potentially severe hypoglycemia in diabetic patients on antidiabetic therapy during glecaprevir/pibrentasvir treatment.
Mechanism: Not a classic CYP/transporter PK interaction. Clearance of HCV improves hepatic function, altering glucose homeostasis and insulin sensitivity, which can potentiate the pharmacodynamic effect of antidiabetic agents. Neither drug is a prodrug relevant here.
- Direction: Enhanced hypoglycemic effect
- Onset: Unspecified; monitor throughout therapy
- Evidence: Probable (postmarketing reports, epidemiologic data)
- Management: Increase self-monitoring of blood glucose; dose may need individualized adjustment or discontinuation of antidiabetic agents per care team.
What happens
Altered glycemic control resulting in severe symptomatic hypoglycemia
Interaction Deep Dive
Eradicating HCV infection through direct-acting antivirals can produce shifts in liver function that may affect the safe and effective administration of medications taken alongside them. Both postmarketing case reports and published epidemiological research have documented changes in glycemic control leading to serious symptomatic hypoglycemia among patients with diabetes. When glecaprevir/pibrentasvir is used concurrently, blood glucose should be checked more often, and clinicians should weigh either modifying the dose or stopping antidiabetic agents1.
Why it happens (mechanism)
Changes in hepatic function due to clearance of HCV infection with direct-acting antivirals
How to manage this interaction
Keep taking both medications as prescribed unless your care team tells you otherwise. This is something your team can manage well.
- Check your blood glucose more frequently during your hepatitis C treatment.
- Your antidiabetic dose may need to be adjusted and individualized by your care team, and in some cases they may pause it.
- Learn the signs of low blood sugar (shakiness, sweating, dizziness, confusion) and treat them promptly.
- Report any low readings or symptoms to your pharmacist or prescriber.
Management is individual — confirm any change with your pharmacist or prescriber.
Literature reports
1 report — tap to read
a) Changes in blood glucose control leading to serious symptomatic hypoglycemia have been described in diabetic patients through postmarketing case reports and published epidemiological studies 1.
Common questions
Can I take Pibrentasvir and Acarbose together?
As hepatitis C treatment improves your liver function, your blood sugar can drop, so check it more often and let your care team adjust your acarbose dose if needed. Do not stop either medication on your own. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Pibrentasvir and Acarbose interaction?
It is rated moderate. Can be significant — usually manageable with monitoring.
How quickly could this interaction happen?
The documented onset is "unspecified". The timing of this interaction is not well characterized.
How is the Pibrentasvir and Acarbose interaction managed?
Keep taking both medications as prescribed unless your care team tells you otherwise. This is something your team can manage well. Check your blood glucose more frequently during your hepatitis C treatment. Your antidiabetic dose may need to be adjusted and individualized by your care team, and in some cases they may pause it. Learn the signs of low blood sugar (shakiness, sweating, dizziness, con… Management is individual — always follow your own care team's guidance.
How strong is the evidence for this interaction?
The evidence is graded "probable". Good supporting evidence, though not definitively proven.
Questions for your pharmacist
- Does my dose of Pibrentasvir or Acarbose need adjusting while I take them together?
- What symptoms should prompt me to call you or my prescriber right away?
- Does the timing of my doses matter for this combination?
- Is there anything you'd monitor while I'm on both?
References (1)
- Product Information: MAVYRET(R) oral tablets, oral pellets, glecaprevir pibrentasvir oral tablets, oral pellets. AbbVie Inc (per FDA), North Chicago, IL, 2023. DailyMed
Keep reading about Acarbose
Keep reading about Pibrentasvir
These medications also interact with supplements
Prescription drugs aren't the whole picture — herbal and dietary supplements can interact with them too. From the evidence-graded Natural Medicines database:
major · moderate · minor — check everything you take with our drug–supplement interaction checker.
Check another combination
Our instant two-drug interaction checker is almost here.
Still have questions about this combination?
Every question gets a real answer from a licensed pharmacist — free, and usually within a day.
Ask the pharmacist