Lamictal (lamotrigine): Uses, Side Effects, Dosage

Key Takeaways

• Lamictal (lamotrigine) is primarily used to treat bipolar disorder and prevent depressive episodes, and it may be prescribed off-label for depression or anxiety.
  
• Lamictal dosage must be increased gradually, so close monitoring by a licensed psychiatry provider is essential to reduce the risk of serious side effects.
  
• Treatment decisions should be personalized, and a psychiatric provider can help determine whether Lamictal, therapy, or a combined approach is the best option for you.

Lamictal (lamotrigine) is a prescription medication most commonly used to treat bipolar disorder and certain seizure conditions. In mental health care, it’s considered a mood stabilizer and is often prescribed to help prevent mood episodes in people living with bipolar I disorder.

Some psychiatrists also prescribe Lamictal off-label for depression or anxiety, depending on a person’s symptoms, history, and overall treatment goals.

If you’re researching Lamictal for depression, Lamictal for anxiety, or wondering what Lamictal is used for in mental health, you likely want clear, practical information.

This guide explains how Lamictal works, the conditions it’s used to treat, potential benefits and risks, common and serious side effects, and typical dosage guidelines. It also outlines what to know before starting treatment and how to access care through Talkspace psychiatry.

Medication decisions are personal and should always be made with a licensed psychiatrist who understands your full health history. 

What is Lamictal?

Lamictal is a Food and Drug Administration (FDA)-approved medication used to treat seizure disorders like epilepsy and bipolar disorder. It’s also used off-label — meaning the FDA hasn’t approved it but may effectively treat unipolar depression (also known as a major depressive episode).

Lamictal for bipolar disorder can be a critical part of your comprehensive treatment plan. A licensed psychiatry provider can help determine whether starting Lamictal or adjusting your current bipolar medication makes sense based on your symptoms and history.

How does Lamictal work?

Researchers don’t fully understand how Lamictal works in bipolar depression. It’s thought to impact and stabilize electrical activity in the brain, which might help prevent mood swings or delay the time between depressive mood episodes.

Lamictal appears to be more effective for preventing depressive episodes in bipolar disorder than for treating active manic symptoms.

How does Lamictal make you feel?

Lamictal can decrease excitability and offer feelings of emotional steadiness. Some people experience drowsiness or sleepiness when they first start taking Lamictal (lamotrigine).

These are common possible effects, and they’re generally mild, but if they’re interfering with your ability to function daily, they can often be addressed through dosage adjustment.

For some people, Lamictal can significantly reduce mood fluctuations and support more consistent emotional regulation. Individual responses vary, and ongoing monitoring is important.

What Conditions is Lamictal Used to Treat?

Lamictal for depression associated with bipolar disorder can be effective, and the medication is commonly used for maintenance treatment.

It’s one of the few mood stabilizers for bipolar disorder that primarily helps prevent depressive episodes rather than targeting mania, which may make it a strong option when depressive symptoms are more prominent.

There are also additional off-label Lamictal uses.

Lamictal for Bipolar I disorder maintenance

Lamictal can help reduce depressive episodes in bipolar disorder by delaying or preventing future mood episodes. Its preventive effects are often what make it especially helpful in managing bipolar depression over time.

Lamictal off-label for unipolar depression or chronic depression

According to a Neuropsychopharmacology report, Lamictal might be a good option for people with persistent depressive disorder (PDD), also known as dysthymia, when other antidepressants or forms of treatment haven’t helped.

Furthermore, a study in the Journal of Psychopharmacology reports that Lamictal may improve symptoms in people with treatment-resistant unipolar depression.

Lamictal off-label for anxiety

While it’s not FDA-approved for anxiety treatment, Lamictal has shown promising results in reducing stress and symptoms of chronic anxiety. More research is needed, and decisions about using Lamictal for anxiety should always be made with a licensed psychiatric provider.

What are the Pros and Cons of Taking Lamictal?

Like any medication, Lamictal has its pros and cons. It’s important to use caution and understand both the benefits and the risks before you decide to take any drug.

“Lamictal is an excellent choice for mood disorders, as there is no weight gain or metabolic concerns compared to other medications. It can easily be combined with other psychotropic medications like SSRIs or SNRIs to address mood, liability, agitation, and irritability.”

– Talkspace psychiatrist Dr. Muhammad Munir, MD

What are the Side Effects of Lamictal?  

All drugs, including Lamictal, have a risk of severe or mild side effects. Understanding potential reactions to a new medication is important so you know what’s common, rare, or possibly life-threatening.

Common side effects of Lamictal include:

• Drowsiness
• Nausea or vomiting
• Changes in urination output
• Tightness in the chest
• Changes in vision, including blurred or double vision
• Feeling more clumsy, unsteady, or uncoordinated than normal
• Irregular heartbeat
• Increased sweating
• Pain in the jaw
• Change in breathing pattern
• Arm, back, or neck pain
• Dilated neck veins
• Rash
• Swelling in the face, lower legs or feet, and fingers

*Note this list is not all-inclusive

Less common, but still notable, mild side effects of Lamictal might include:

• Anxiety
• Depression or increased irritability
• Chest pain
• Uncontrollable or continuous eye movement
• Confusion
• Increased seizures
• Infection

*Note this list is not all-inclusive

Lamictal has the potential for severe, possibly life-threatening, side effects that you should be aware of:

• Stevens-Johnson Syndrome (SJS)
• Toxic Epidermal Necrolysis (TEN)
• Hemophagocytic lymphohistiocytosis (HLH)
• Aseptic meningitis
• Multiorgan hypersensitivity reactions
• Angioedema
• Increased thoughts of suicide
• Serious allergic reaction

What is the Correct Dosage for Lamictal?

To reduce the risk of serious side effects, your Lamictal dosage must be increased gradually over time. Most psychiatrists start with a low dose and slowly adjust it.

Lamictal is typically prescribed to treat bipolar depression in doses ranging from 25mg to 400mg. A psychiatry provider will usually increase the dose every 1–2 weeks until Lamictal works and a therapeutic level is reached.

It can take weeks to months before you find the dosing schedule that’s most effective in treating your specific bipolar symptoms.

There are several forms of Lamictal, including:

• Chewable tablets
• Tablets
• Orally disintegrating
• Extended-release

How to take Lamictal

Take Lamictal exactly as prescribed by your psychiatrist. Never abruptly discontinue Lamictal without discussing a safe taper plan with your psychiatrist.

Take tablets whole; do not crush them. Dissolvable tablets may be dissolved in liquid, chewed, or swallowed whole. Lamictal can be taken with or without food.

If you forget or miss a dose of Lamictal, take it as soon as you remember, unless it’s close to the time you’d take it again. In that case, skip the missed dose and resume with your next scheduled one. Never double-dose Lamictal.

If you accidentally take too much Lamictal, contact your psychiatrist, call 911, or reach Poison Control at 800-222-1222 right away. You can also seek care at the nearest emergency room.

Additional Considerations for Taking Lamictal

Lamictal can be an effective option for bipolar depression treatment, but there are some considerations to note before deciding to take this drug.

“One has to be extra careful when starting Lamictal and adjusting the dose. It’s essential to follow the instructions and make sure not to miss the dose of the medication as that can be very detrimental to the treatment and can cause serious side effects, including having a seizure.”

– Talkspace psychiatrist Dr. Muhammad Munir, MD

Drug Interaction

Lamictal is known to interact with certain medications. To help ensure it’s safe for you, inform your psychiatrist about everything you take, including prescription medications, over-the-counter products, vitamins, and supplements.

Lamictal can interact with more than 280 other drugs, including but not limited to:

• Adderall
• Ativan
• Ambien
• Birth control
• Gabapentin
• Ibuprofen
• Lexapro
• Metformin
• Prozac
• Xanax
• Zyrtec

*Note this drug interaction list is not all-inclusive

Warnings

Lamictal can cause serious skin reactions that require prompt medical attention. In rare cases, these reactions can be life-threatening.

The likelihood of experiencing a severe Lamictal-related skin reaction increases when the dosage is too high or if there’s a rapid increase in dose. This is why ramping up the dosage must be done slowly and under diligent observation.

Be sure to report any skin changes you notice if you’ve just started Lamictal or your doctor recently changed your dose.

Serious Risks and Long-Term Effects Associated with Lamictal

Lamictal is generally well tolerated, but like all medications, it carries potential risks that should be carefully monitored by a psychiatrist.

Severe skin reactions

One of the most serious risks associated with Lamictal is a rare but potentially life-threatening skin reaction called Stevens-Johnson syndrome (SJS) or toxic epidermal necrolysis (TEN).

These reactions typically occur within the first 2–8 weeks of treatment and are more likely if the medication is started at too high a dose or increased too quickly.

Symptoms may include a spreading rash, blistering, peeling skin, sores in the mouth, or flu-like symptoms. Any new or worsening rash should be evaluated promptly. Gradual dose increases significantly reduce this risk, which is why Lamictal must be titrated slowly.

Mood or behavioral changes

Although Lamictal is used to stabilize mood, some people may experience mood changes when starting or adjusting the medication. This can include increased irritability, agitation, or new or worsening symptoms of depression.

As with many medications used in mental health care, there is also a warning about the potential for suicidal thoughts or behaviors, particularly when beginning treatment. If you notice sudden changes in mood, thoughts, or behavior, contact your doctor right away.

Long-term monitoring needs

Lamictal does not typically require routine blood level monitoring in the way some other mood stabilizers do. However, ongoing follow-up appointments are important to:

• Evaluate symptom improvement
• Monitor for side effects
• Adjust dosage if needed
• Assess how Lamictal fits into your broader treatment plan

Long-term treatment decisions should always be individualized. Some people take Lamictal for extended periods to maintain mood stability, while others may transition to different treatment approaches over time.

Regular communication with a licensed psychiatrist helps ensure that Lamictal continues to be both safe and effective for your needs.

What Should You Do If You Miss a Dose of Lamictal?

If you miss a dose of Lamictal, take it as soon as you remember, unless it’s almost time for your next scheduled dose. If it’s close to your next dose, skip the missed dose and continue with your regular schedule. Do not take two doses at once.

Because Lamictal must be increased gradually to reduce the risk of serious skin reactions, missing several doses in a row is more complicated. If you stop taking Lamictal for more than a few days, you may need to restart at a lower dose and slowly increase it again. Restarting at your previous full dose without medical guidance can increase the risk of severe skin reactions.

If you’ve missed multiple doses, contact your psychiatrist before restarting. They can advise you on the safest way to resume treatment based on how long you’ve been off the medication and your current dosage.

When in doubt, it’s always safest to check with a licensed psychiatrist rather than adjusting the medication on your own.

How Should Lamictal Be Stored Safely?

Proper storage helps maintain the safety and effectiveness of Lamictal.

Lamictal should be stored at room temperature, away from excess heat, moisture, and direct light. Avoid keeping it in humid areas like bathrooms, where temperature changes and moisture can affect the medication. Keep tablets in their original container with the lid tightly closed.

As with all medications used in mental health care, Lamictal should be kept out of reach of children and pets. If a dose is no longer needed or the medication has expired, ask your pharmacy about safe disposal options rather than throwing it directly in the trash or flushing it.

If you’re unsure whether your medication has been stored properly, a pharmacist or psychiatric provider can help you determine whether it’s still safe to use.

Are There Alternatives to Lamictal?

Although Lamictal can be effective in treating depressive symptoms in bipolar disorder, it isn’t the right fit for everyone. There are alternative treatment options if you haven’t responded well to Lamictal or if you’re experiencing side effects that feel difficult to tolerate.

Alternatives to Lamictal include:

• Depakote (divalproex sodium): Often used in bipolar disorder management, Depakote can be effective in helping to stabilize mood swings.
• Lithium: A first-line treatment for bipolar disorder, Lithium has been used for decades to help prevent both manic and depressive episodes associated with bipolar disorder. Learn how Lamictal compares to Lithium to make an informed decision.
• Zyprexa (olanzapine): This antipsychotic medication is prescribed for both schizophrenia and bipolar I disorder maintenance. Though widely used, it comes with potential side effects that require careful monitoring by your doctor.

How Can You Get an Online Lamictal Prescription Through Talkspace?

If you’re considering Lamictal for bipolar disorder, depression, or anxiety, Talkspace  makes it possible to connect with a licensed psychiatric provider online.

The process starts with a brief assessment to better understand your symptoms, health history, and treatment goals. From there, you’ll meet virtually with a licensed psychiatric provider who can evaluate whether Lamictal or another medication is appropriate for your needs.

Ongoing follow-up appointments allow your provider to monitor how Lamictal is working, adjust your dosage if needed, and check for side effects. Because Lamictal must be increased gradually, regular check-ins are especially important during the early stages of treatment.

Virtual psychiatry offers flexibility and privacy, making it easier to access care without traveling to an in-person office. Many individuals also choose to combine medication management with therapy for more comprehensive support.

If you’re weighing therapy vs. medication, a psychiatrist can help you understand the benefits of each and whether a combined approach makes sense.

You can learn more about online psychiatry services through Talkspace and explore whether virtual medication management fits your lifestyle and mental health goals.

Frequently Asked Questions

Does Lamictal cause weight gain?

Lamictal is not commonly associated with significant weight gain. Unlike some other mood stabilizers, it’s generally considered weight-neutral for many people. However, medication effects vary. If you notice unexpected weight changes after starting Lamictal, discuss them with your psychiatrist so they can evaluate possible causes and adjust your treatment plan if needed.

How long does Lamictal take to work?

Lamictal typically takes several weeks to show noticeable effects, as it requires time to build up in your system. The full benefits may take up to 6-8 weeks to be felt, depending on individual response.

Is Lamictal an antidepressant or a mood stabilizer?

Lamictal is primarily a mood stabilizer, often used to treat bipolar disorder and prevent mood swings. While it can help with depression in bipolar disorder, it is not classified as a traditional antidepressant.

Can Lamictal be used for anxiety and depression together?

Lamictal is primarily used to treat mood disorders like bipolar depression, but it is not typically prescribed for anxiety. It may help with depression, particularly in bipolar disorder, but additional treatments may be needed to manage both anxiety and depression.

Is Lamictal a controlled substance?

No, Lamictal is not a controlled substance. It does not carry the same risk of dependence that some other medications used in mental health care may have. Even so, it should only be taken as prescribed and under the supervision of a qualified psychiatrist.

Sources:

1. Matsuzaka, Y., Urashima, K., Sakai, S., Morimoto, Y., Kanegae, S., Kinoshita, H., Imamura, A., Ozawa, H. The effectiveness of lamotrigine for persistent depressive disorder: A case report. Neuropsychopharmacology Reports. https://pmc.ncbi.nlm.nih.gov/articles/PMC8919124/. 2022 Jan 5; 42(1): 120-123. Accessed February 17, 2026.
2. Goh, KK., Chen, CH., Chiu, YH., Lu, ML. Lamotrigine augmentation in treatment-resistant unipolar depression: A comprehensive meta-analysis of efficacy and safety. Journal of Psychopharmacology. https://pubmed.ncbi.nlm.nih.gov/31081449/. 2019 Jun; 33(6): 700-713. Accessed February 17, 2026.

Talkspace articles are written by experienced mental health-wellness contributors; they are grounded in scientific research and evidence-based practices. Articles are extensively reviewed by our team of clinical experts (therapists and psychiatrists of various specialties) to ensure content is accurate and on par with current industry standards
Our goal at Talkspace is to provide the most up-to-date, valuable, and objective information on mental health-related topics in order to help readers make informed decisions.
Articles contain trusted third-party sources that are either directly linked to in the text or listed at the bottom to take readers directly to the source.