Acarbose and Oxprenolol: 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
Oxprenolol
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 to help control your blood sugar, and oxprenolol, a beta-blocker, for your heart or blood pressure. When these two are used together, a couple of things can happen. Your blood sugar may swing a little higher or lower than expected. Just as important, the beta-blocker can hide one of the warning signs of low blood sugar. Normally a fast or pounding heartbeat tells you your sugar is dropping, but oxprenolol can quiet that signal. The good news is that other signs, like sweating and dizziness, usually still show up.
This is very manageable. Your care team may check your blood sugar a bit more often or fine-tune your doses. Keep taking both as prescribed and let your pharmacist or doctor know if anything feels off.
Effect: Combining acarbose with the nonselective beta-blocker oxprenolol may alter glycemic control (hypo- or hyperglycemia) and can blunt adrenergic warning signs of hypoglycemia, notably tachycardia, while sweating and dizziness are typically preserved.
- Mechanism: beta-blockade plus altered glucose metabolism; nonselective agents can potentiate hypoglycemia and delay glucose recovery.
- Onset: delayed. Evidence: probable. Severity: moderate.
- Management: increase frequency of glucose monitoring; individualize antidiabetic dosing as needed. On beta-blocker withdrawal, watch for loss of glycemic control.
Neither agent is a prodrug requiring activation; the interaction is pharmacodynamic.
What happens
Hypoglycemia or hyperglycemia; decreased symptoms of hypoglycemia
Interaction Deep Dive
When antidiabetic medications are taken together with beta-blockers, patients may experience either hypoglycemia or hyperglycemia, and the beta-blocker may mask signs of hypoglycemia12. Among hypoglycemic symptoms, tachycardia may be altered, whereas others such as dizziness and sweating are not 6. Insulin-related hypoglycemia can be intensified by nonselective beta-blockers, which can also impede the return of serum glucose to normal levels. In individuals who have both heart failure and diabetes, hyperglycemia may become more pronounced 7. It may be necessary to monitor glucose more often or to modify the dose of the antidiabetic drug 12. During combined therapy, watch carefully for indications of hypoglycemia, and should the beta-blocker be discontinued, monitor for a loss of glycemic control 3.
Why it happens (mechanism)
Altered glucose metabolism and beta blockade
How to manage this interaction
Keep taking both medications as prescribed. This combination is commonly used and can be managed well by your care team.
- Your team may check your blood sugar more often, especially when you first start.
- The dose of your acarbose may be adjusted and individualized by your prescriber if your readings change.
- Be aware that a racing heartbeat may not warn you of a low, so watch for sweating, dizziness, shakiness, or confusion.
- If your beta-blocker is ever stopped, your team will watch for your sugar rising again.
Raise any unusual blood sugar readings or symptoms with your pharmacist or doctor.
Management is individual — confirm any change with your pharmacist or prescriber.
Literature reports
2 reports — tap to read
a) In elderly diabetic patients receiving either insulin or sulfonylureas, the selection of antihypertensive agent had little impact on the risk of hypoglycemia; however, once adjusted for other risk factors, the lowest risk was seen with cardioselective beta blockers and the highest with non-cardioselective beta blockers, while other antihypertensive agents yielded intermediate outcomes (N=13,559) 4.
b) Beta blockers, though not alpha blockade or ACE inhibitors, produced a worsening of long-term glycemic control in patients with hypertension and non-insulin dependent diabetes. Certain unfavorable effects on the lipid profile also arose with beta blockade. These effects were particularly evident with propranolol. Simultaneous use of an alpha blocker together with the beta blocker prevented the worsening attributable to beta blockade 5.
Common questions
Can I take Acarbose and Oxprenolol together?
Acarbose and oxprenolol together can shift your blood sugar and can mask a fast heartbeat that normally warns of a low, so monitor your glucose more closely and know the other warning signs. Your care team can manage this with monitoring and dose tailoring. Always confirm with your pharmacist or prescriber before making any change.
How serious is the Acarbose and Oxprenolol interaction?
It is rated moderate. Can be significant — usually manageable with monitoring.
How quickly could this interaction happen?
The documented onset is "delayed". Effects tend to build up gradually over days to weeks.
How is the Acarbose and Oxprenolol interaction managed?
Keep taking both medications as prescribed. This combination is commonly used and can be managed well by your care team. Your team may check your blood sugar more often, especially when you first start. The dose of your acarbose may be adjusted and individualized by your prescriber if your readings change. Be aware that a racing heartbeat may not warn you of a low, so watch for sweating, dizziness… 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 Acarbose or Oxprenolol 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 (7)
- Product Information: TOUJEO(R) subcutaneous injection, insulin glargine subcutaneous injection. sanofi-aventis (per manufacturer), Bridgewater, NJ, 2015. DailyMed
- Product Information: AMARYL(R) oral tablets, glimepiride oral tablets. Sanofi-Aventis U.S. LLC (per FDA), Bridgewater, NJ, 2013. DailyMed
- Product Information: Glynase(R) PresTab(R) oral micronized tablets, glyburide oral micronized tablets. Pharmacia & Upjohn Co (per FDA), New York, NY, 2013. DailyMed
- Shorr RI, Ray WA, Daugherty JR, et al: Antihypertensives and the risk of serious hypoglycemia in older persons using insulin or sulfonylureas. JAMA 1997; 278:40-43. DOI
- Whitcroft IA, Thomas JM, Rawsthorne A, et al: Effects of alpha and beta adrenoceptor blocking drugs and ACE inhibitors on long term glucose and lipid control in hypertensive non-insulin dependent diabetics. Horm Metab Res Suppl 1990; 22:42-46.
- Product Information: TENORMIN(R) oral tablets, atenolol oral tablets. AstraZeneca Pharmaceuticals LP (per FDA), Wilmington, DE, 2012. DailyMed
- Product Information: COREG CR(R) extended-release oral capsules, carvedilol phosphate extended-release oral capsules. GlaxoSmithKline, Research Triangle Park, NC, 2011. DailyMed
Keep reading about Acarbose
Keep reading about Oxprenolol
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