lamotrigine vs pregabalin
Side-by-side comparison of lamotrigine and pregabalin. 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
Specifically, there are no pharmacokinetic interactions between pregabalin and the following antiepileptic drugs: carbamazepine, valproic acid, lamotrigine, phenytoin, phenobarbital, and topiramate.
Recommendation: These medicines can be taken together without needing to adjust your dosages.
Lamictal
Lyrica
Lamotrigine is a medicine that can treat seizures and bipolar disorder. It works by reducing irregular electrical activity in the brain.
Pregabalin (Lyrica) is a medicine that can help manage nerve pain, fibromyalgia, and partial-onset seizures. It works by calming overactive nerves in your body.
Lamotrigine can treat epilepsy in adults and children 2 years and older. It can help with partial-onset seizures, primary generalized tonic-clonic seizures, and generalized seizures of Lennox-Gastaut syndrome. It can also be used to delay mood episodes in adults with bipolar I disorder.
This medicine is used to treat nerve pain caused by diabetes, shingles, or spinal cord injury. It can also help with fibromyalgia, a condition that causes widespread pain. Pregabalin can also be used with other medicines to treat partial-onset seizures in adults and children as young as 1 month old.
Lamotrigine affects how nerves in the brain send signals to each other. It is thought to work by decreasing the release of certain chemicals. This helps to stabilize electrical activity and prevent seizures or mood swings.
Pregabalin works by binding to certain areas in your brain and spinal cord. This action helps to reduce the release of chemicals that send pain signals. By reducing these signals, pregabalin can help to lessen pain and control seizures.
- • Dizziness
- • Headache
- • Double vision
- • Uncoordinated movements
- • Nausea
- • Dizziness
- • Sleepiness
- • Dry mouth
- • Swelling
- • Blurred vision
- Skin rash 8,408
- Seizure 6,527
- Feeling sick to your stomach 6,151
- Tiredness 5,914
- Feeling lightheaded 5,771
- Pain 25,904
- Tiredness 15,111
- Feeling dizzy 14,526
- Feeling sick to your stomach 14,050
- Headache 12,681
Lamotrigine can cause a serious skin rash that may require you to go to the hospital. This rash can be life-threatening. The risk is higher in children. Stop taking lamotrigine and see a doctor right away if you get a rash, fever, or swollen lymph nodes.
Pregabalin can cause swelling of the throat, head, and neck, which can be life-threatening. Get emergency help right away if this happens. This medicine can also increase the risk of suicidal thoughts or behavior. Watch for any changes in your mood or behavior. Pregabalin may cause dizziness and sleepiness, so be careful driving or operating machinery. Do not stop taking pregabalin suddenly, as this can cause increased seizures or other side effects.
Tell your doctor if you are pregnant or plan to become pregnant. Lamotrigine may cause harm to an unborn baby. There is a pregnancy registry for women who take lamotrigine during pregnancy. You can enroll by calling 1-888-233-2334.
Taking pregabalin during pregnancy may slightly increase the risk of birth defects. If you are pregnant or plan to become pregnant, talk to your doctor about the risks and benefits of taking this medicine. Breastfeeding while taking pregabalin is not recommended.
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How to Read This lamotrigine vs pregabalin Comparison
lamotrigine is classified in the Anticonvulsant drug class, while pregabalin sits within the Anticonvulsant / Nerve Pain Agent 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, lamotrigine has 32,771 submissions while pregabalin has 82,272. 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 these drugs do not change how the body processes or clears the other drug from your system.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between lamotrigine and pregabalin - always consult your physician or pharmacist first.
Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.