dronedarone vs phenobarbital
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Side-by-side comparison of dronedarone and phenobarbital. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
moderate Known Drug Interaction
Rifampin and Other CYP3A Inducers Avoid rifampin or other CYP3A inducers such as phenobarbital, carbamazepine, phenytoin, and St.
Multaq
Luminal
Multaq is a medicine that helps lower the risk of needing to stay in the hospital for atrial fibrillation (AFib). It is for people who have a history of AFib and are currently in normal heart rhythm.
Phenobarbital is a medicine that can help control seizures and calm you down. It belongs to a class of drugs called barbiturates.
Multaq is used to lower the risk of hospitalization if you have atrial fibrillation (AFib). AFib is an irregular heartbeat. This medicine is for people who used to have AFib, but are now in a normal heart rhythm.
This medicine is used to treat generalized and partial seizures. Seizures are caused by unusual electrical activity in the brain. Phenobarbital helps to reduce this activity and prevent seizures.
Multaq is an antiarrhythmic drug. It works by changing the electrical signals in the heart. This helps to keep your heart in a normal rhythm and prevent AFib from returning.
Phenobarbital works by slowing down the activity of your brain and nervous system. It increases the effects of a natural chemical in the body called GABA. This helps to reduce seizures and promote relaxation.
- • Diarrhea
- • Nausea
- • Abdominal pain
- • Vomiting
- • Feeling weak or tired
- • Drowsiness
- • Sedation
- • Lethargy
- • Vertigo
- Atrial Fibrillation 1,420
- Dyspnoea 838
- Fatigue 615
- Diarrhoea 477
- Nausea 472
- Seizure 1,534
- Drug Interaction 635
- Toxicity To Various Agents 621
- Status Epilepticus 482
- Multiple-Drug Resistance 442
Multaq can increase the risk of death, stroke, and heart failure in patients with severe heart failure or permanent AFib. You should not take this medicine if you have severe heart failure that recently required hospitalization or if you have permanent AFib and will not be converted to a normal heart rhythm.
You should not take this medicine if you are allergic to barbiturates. Also, do not take it if you have a history of porphyria, severe liver problems, or breathing problems.
Multaq can harm an unborn baby. If you are a woman who could become pregnant, use effective birth control while taking Multaq. Do not breastfeed while taking Multaq and for 5 days after your last dose.
Tell your doctor if you are pregnant or plan to become pregnant. Phenobarbital can harm an unborn baby. Talk to your doctor about the risks and benefits of taking this medicine while breastfeeding.
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How to Read This dronedarone vs phenobarbital Comparison
dronedarone is classified in the Class III Antiarrhythmic drug class, while phenobarbital sits within the Anticonvulsant (Barbiturate) class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, dronedarone has 3,822 submissions while phenobarbital has 3,714. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. These two drugs have a known moderate interaction flagged in FDA labeling, attributed to phenobarbital makes your body get rid of dronedarone too quickly, which can stop the medicine from working correctly.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot represent individual circumstances. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This registry does not provide medical, treatment, substitution, or medication-change directions for dronedarone or phenobarbital.
Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.