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How do mood stabilizers work?

Carli Simmonds, Author

Carli Simmonds

Key takeaways
  • Mood stabilizers treat bipolar disorder by balancing brain chemistry, preventing the extreme highs of mania and lows of depression.
  • They work by balancing neurotransmitters, regulating ion channels to calm brain activity, and offering neuroprotective effects for brain cells.
  • The main types are lithium, the "gold standard," and anticonvulsants like Valproic acid, Lamotrigine, and Carbamazepine.
  • These medications are not addictive but require consistent use, as it can take several weeks to reach their full stabilizing effect.
  • Side effects like nausea or drowsiness are possible, but mood stabilizers do not change your core personality, allowing your true self to emerge.
how mood stabilizers work

If you’ve ever felt like you’re riding an emotional rollercoaster, with soaring highs one moment and crushing lows the next, you know how exhausting it can be to crave just a little peace and predictability. It’s natural to want more balance and a steadier sense of control in your days. Gaining a clear understanding of how mood stabilizers work isn’t just about science; it’s a way to reclaim agency in your treatment, working alongside your healthcare team to find a steadier path forward.

What are mood stabilizers?

Mood stabilizers are a specific class of psychiatric medication designed to help you maintain emotional balance. Think of them as a way to gently guide your moods away from the extreme highs of mania and the deep lows of depression, bringing them toward a more stable middle ground. Their primary and most well-known use is in the treatment of bipolar disorder, where they work to control current symptoms and, just as importantly, prevent future episodes from occurring.

While antidepressants are designed to lift mood from a state of depression, they can sometimes trigger mania in people with bipolar disorder. Mood stabilizers, on the other hand, are formulated to keep things level. Understanding this is the first step in building an effective, collaborative psychiatric treatment plan with your provider.

How mood stabilizers work

While the science is complex, the main goal of a mood stabilizer is to reduce abnormal brain activity. You can think of them as a thermostat for your mood, helping to keep it from getting too high or too low. They achieve this in a few key ways. First, they help balance neurotransmitters, which are the chemical messengers in your brain. For instance, they can enhance the effects of GABA, a calming neurotransmitter, while reducing the influence of glutamate, which is more excitatory. This adjustment helps quiet the electrical “noise” that can lead to intense mood swings.

Another important mechanism of action involves regulating ion channels, which control the electrical signals in your brain cells. By managing the flow of sodium and calcium, these medications help prevent neurons from firing too rapidly and erratically.

Finally, many mood stabilizers have neuroprotective effects, meaning they help protect your brain cells from damage and enhance their resilience over time. This combination of actions works together to create a more stable neurological environment, leading to more predictable emotions and a greater sense of control.

Types of mood stabilizers

When discussing mood stabilizers, healthcare providers are usually referring to one of a few main categories of medication. Each works a bit differently and may be chosen based on your specific symptoms and needs. The most common types are lithium and a class of drugs called anticonvulsants. In some cases, certain atypical antipsychotics may also be used for their mood-stabilizing properties, but lithium and anticonvulsants are often the first line of defense in managing a mood disorder like bipolar disorder. Finding the right fit is a collaborative process between you and your doctor.

Lithium (lithium carbonate or lithium citrate)

Lithium is often considered the “gold standard” of mood stabilizers and has been used for decades to effectively treat bipolar disorder. It’s particularly good at managing acute mania and, when taken long-term, is one of the most effective medications for preventing future manic and depressive episodes. Because the therapeutic dose is close to a toxic dose, anyone taking lithium needs regular blood tests to ensure the levels in their body remain safe and effective. This monitoring is a key part of the treatment process.

Anticonvulsants

As the name suggests, these medications were created to treat seizure disorders. However, researchers discovered they are also highly effective at stabilizing mood. They work by calming hyperactivity in the brain. There are several different anticonvulsants used for mental health, each with its own strengths:

  • Valproic acid (depakote). This medication is often used to treat mania and is particularly helpful for people who experience rapid cycling, which is having four or more mood episodes in a year.
  • Lamotrigine (lamictal). While less effective for mania, lamotrigine is especially good at preventing the depressive episodes of bipolar disorder.
  • Carbamazepine (tegretol). This is another option for treating mania and can be helpful for mixed episodes, where you experience symptoms of both depression and mania at the same time.

What are the possible side effects of mood stabilizers?

Like any medication, mood stabilizers come with potential side effects that vary from person to person and drug to drug. It’s important to remember that many people experience only mild effects, or none at all. Open communication with your doctor is key to managing any that do arise. Some of the more common side effects can include:

  • Nausea or indigestion
  • Drowsiness or fatigue
  • Weight gain
  • Dizziness
  • Tremors (shakiness)

Specific medications carry their own risks. For example, about 20% to 37% of people taking lithium long-term may experience polyuria, or excessive urination. With valproic acid, a smaller percentage of people may experience changes in liver function. A common concern is whether mood stabilizers change your personality.

They don’t alter your core self; they work to smooth out the disruptive highs and lows so your true personality can come through more consistently. Navigating treatment options can feel overwhelming. Our team can help you understand how medication and therapy can work together for your mental health.

How long do mood stabilizers take to work?

It’s really important to understand that mood stabilizers don’t work overnight. Finding the right medication and the correct dose is a process that requires patience. While you might start to notice some small improvements within a week or two, it typically takes several weeks, and sometimes a couple of months, for the medication to reach its full stabilizing effect.

During this time, it’s crucial to take your medication consistently as prescribed by your doctor. Stopping or changing your dose on your own can set back your progress, so always talk to your healthcare provider before making any adjustments.

Are mood stabilizers addictive?

This is a common and understandable question. The simple answer is no, mood stabilizers are not addictive. They don’t produce a “high” or create the kind of cravings associated with substances like opioids or alcohol. However, it’s important to understand the difference between addiction and physical dependence.

Your body can become physically dependent on a medication, meaning it gets used to having it. If you stop taking it abruptly, you might experience withdrawal effects or a relapse of your symptoms. That’s why you should never stop your medication without talking to your doctor, who can help you taper off safely if needed.

Frequently asked questions

What conditions are mood stabilizers used to treat?

Mood stabilizers are prescribed to treat bipolar disorder, including acute manic episodes, depressive episodes, and mixed states. They may also be used for schizoaffective disorder, seizure disorders, and other mental illnesses. Some anticonvulsant medications originally developed to treat epilepsy are also effective mood-stabilizing medications.

What side effects can occur with mood stabilizing medication?

Common side effects of mood stabilizers may include weight gain, dry mouth, blurred vision, difficulty concentrating, abdominal pain, and sleep problems. Some medications carry more serious risks, such as liver damage or rare reactions like Stevens-Johnson syndrome. If severe symptoms like slurred speech, skin changes, or decreased reaction time occur, a doctor should be contacted immediately.

Are mood stabilizers addictive or safe for long-term treatment?

Mood stabilizers are not addictive, but they are often used as long-term treatment for bipolar disorder and other mental health conditions. It can take several weeks for the body to adjust and for symptoms to improve. Stopping medication suddenly can worsen symptoms or trigger relapse, so changes should always be made under medical supervision.

Understanding how mood stabilizers work

Mood stabilizers are a powerful and essential tool for managing the symptoms of a mood disorder, but they are most effective as part of a comprehensive treatment plan. True, lasting stability often comes from combining medication management with therapy.

Structured programs, such as an intensive outpatient program (IOP), can provide the support and skills needed to navigate mental health crisis while managing daily life. They offer a blend of therapy, education, and peer support that complements the work your medication is doing.

Understanding how mood stabilizers work to balance neurotransmitters and knowing that they aren’t addictive can empower you to take an active role in your care. A great next step is to discuss with a professional whether medication, therapy, or both is the right approach for you. If you’re ready to explore your options, the team at Red Ribbon Mental Health is here to help. You can reach us at (317) 707-9706 or contact us to start the conversation.

Sources
  1. Malhi, G. S., et al. (November 14, 2002). Mood stabilizer psychopharmacology. Neuropsychopharmacology.
  2. Yatham, L. N., et al. (April 24, 2023). Mood Stabilizers. StatPearls.
  3. U.S. Department of Veterans Affairs. Facts about Mood Stabilizers. Facts about Mood Stabilizers. U.S. Department of Veterans Affairs.
  4. Lenox, R. H., & Manji, H. K. (2001). Mood stabilizers and ion regulation. Journal of Clinical Psychiatry.
  5. Chang, Y. H., et al. (May 8, 2012). Neuroprotective effects of the mood stabilizer lamotrigine against …. Journal of Neural Transmission.
  6. Vieta, E., et al. (April 30, 2003). Risk factors for the development of lithium-induced polyuria. Bipolar Disorders.
  7. Substance Abuse and Mental Health Services Administration. (April 24, 2023). What is Bipolar Disorder?. SAMHSA.
  8. National Institute of Mental Health. (January 1, 2024). Bipolar Disorder. National Institute of Mental Health.
  9. National Library of Medicine. (October 17, 2023). Bipolar Disorder. MedlinePlus.

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About the content

Last updated on: Feb 23, 2026
Jodi Tarantino (LICSW)

Written by: Carli Simmonds. Carli Simmonds holds a Master of Arts in Community Health Psychology from Northeastern University. From a young age, she witnessed the challenges her community faced with substance abuse, addiction, and mental health challenges, inspiring her dedication to the field.

Jodi Tarantino (LICSW)

Medical reviewed by: Jodi Tarantino, LICSW. Jodi Tarantino is an experienced, licensed Independent Clinical Social Worker (LICSW) and Program Director with over 20 years of experience in Behavioral Healthcare. Also reviewed by the RRR Editorial team.

Red Ribbon Recovery is committed to delivering transparent, up-to-date, and medically accurate information. All content is carefully written and reviewed by experienced professionals to ensure clarity and reliability. During the editorial and medical review process, our team fact-checks information using reputable sources. Our goal is to create content that is informative, easy to understand and helpful to our visitors.

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