tiagabine vs warfarin
According to this portal's Publishing Organization, this page was last reviewed in August 2026 against our methodology. Figures and extracts on this site, including tables above 1,000 rows when the corpus is that large, are the publisher's responsibility.
Side-by-side comparison of tiagabine and warfarin. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
minor Known Drug Interaction
Warfarin: No significant differences were observed in the steady-state pharmacokinetics of R-warfarin or S-warfarin with the addition of tiagabine given as a single dose.
Tiagabine is a medicine used with other medicines to treat partial seizures. It helps to control seizures by affecting certain chemicals in the brain.
Warfarin is a medicine that helps prevent blood clots. It is used to treat and prevent dangerous clots from forming in your body.
Tiagabine is used to treat partial seizures in adults and children 12 years and older. It is used along with other seizure medicines. Partial seizures affect only one part of the brain.
Warfarin is used to prevent and treat blood clots in your veins and lungs. It can also prevent clots if you have atrial fibrillation (irregular heartbeat) or a replacement heart valve. After a heart attack, it can lower the risk of death, another heart attack, or a stroke.
Tiagabine works by increasing the amount of a chemical called GABA in the brain. GABA helps to calm the brain and reduce seizures. Tiagabine blocks the reuptake of GABA, which means more GABA is available in the brain.
Warfarin works by blocking your body's use of vitamin K. Vitamin K is needed to make blood clotting factors. By blocking vitamin K, warfarin makes your blood less likely to clot.
- • Dizziness
- • Lack of energy
- • Sleepiness
- • Nausea
- • Nervousness or irritability
- • Bleeding from any tissue or organ
- Encephalopathy 16
- Myoclonus 14
- Dizziness 6
- Feeling Abnormal 5
- Seizure 5
- International Normalised Ratio Increased 10,276
- Dyspnoea 8,408
- Drug Interaction 6,288
- Fatigue 6,143
- Nausea 5,921
This medicine may cause serious side effects. Tell your doctor right away if you have any changes in mood or behavior, or any suicidal thoughts.
Warfarin can cause major or fatal bleeding. You must have your blood tested regularly (INR) while taking warfarin. Many things, like other medicines and diet changes, can affect your INR. Tell your doctor about any bleeding and follow their instructions to prevent bleeding.
Tell your doctor if you are pregnant or plan to become pregnant. It is not known if tiagabine will harm your unborn baby. Talk to your doctor about the risks and benefits of taking tiagabine during pregnancy.
Warfarin can harm your unborn baby, especially during the first three months of pregnancy. Do not take warfarin if you are pregnant, unless you have a mechanical heart valve and your doctor says the benefits outweigh the risks. Talk to your doctor if you are breastfeeding, and watch your baby for bruising or bleeding.
How to Read This tiagabine vs warfarin Comparison
tiagabine is classified in the Anticonvulsant (GABA Reuptake Inhibitor) drug class, while warfarin sits within the Vitamin K Antagonist (Anticoagulant) 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, tiagabine has 46 submissions while warfarin has 37,036. 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 minor interaction flagged in FDA labeling, attributed to studies show that tiagabine does not change the levels of warfarin in the blood. the two drugs do not seem to have a meaningful interaction.. 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 tiagabine or warfarin.
Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.