Lurasidone (Latuda)

What it treats

Lurasidone is approved by the U.S. Food and Drug Administration to treat schizophrenia and to treat depressive episodes associated with bipolar I disorder, either on its own or as an add-on to lithium or valproate. This guide focuses on those uses.

The bipolar depression indication is a real strength, few antipsychotics have it, and none are used more often in that setting than lurasidone and quetiapine. Bipolar depression is often harder to treat than bipolar mania, so having a medication with strong evidence there is meaningful.

How it works

Lurasidone is an atypical antipsychotic. Nerve cells in the brain communicate using chemical messengers, and two of them, dopamine and serotonin, are central here. In psychosis and mania, dopamine activity in some brain circuits is thought to be too high, and lurasidone dampens that activity while modulating serotonin signaling. That combined action is the shared mechanism of the atypical class.

Lurasidone also has notable activity at a specific serotonin receptor called 5-HT7, which is thought to be part of why it works well for bipolar depression and may have some effect on thinking and memory. How much that receptor contributes clinically is still being understood, and it is worth being honest about that.

Receptor mechanism (detail)

Lurasidone is a D2, 5-HT2A, and 5-HT7 antagonist with 5-HT1A partial agonist activity. In plain terms, it blocks the overactive dopamine signal that drives psychosis and mania, blocks the serotonin receptor that helps soften movement side effects, and blocks 5-HT7, a receptor linked to mood and cognition. The 5-HT1A partial agonist activity gives it some antidepressant-like character. It has very low activity at histamine H1 and muscarinic receptors, which is a large part of why weight gain, sedation, and dry mouth tend to be less prominent than with several other antipsychotics. The trade-off is that its D2 blockade is enough to cause akathisia, especially early on, and that side effect is the most common reason people struggle with it in the first weeks.

Potency and typical dosing pattern

Ranges are typical framework only, not a prescription for any individual. Lurasidone is moderate-potency by milligram and is dosed once daily.

For schizophrenia, a common starting dose is 40 mg once daily, with a usual range of 40 to 160 mg per day. For bipolar depression, the starting dose is often 20 mg once daily, with a usual range of 20 to 120 mg per day. Lurasidone must be taken with a meal of at least 350 kilocalories, otherwise absorption drops substantially, and blood levels can be too low to work reliably. Renal impairment and moderate to severe hepatic impairment require lower doses. The prescriber sets and adjusts the dose based on response, side effects, and other medications.

Safety monitoring

• Metabolic labs. Weight and BMI at baseline, weeks 4, 8, and 12, then quarterly. Fasting glucose or HbA1c and a lipid panel at baseline, three months, and at minimum annually. Lurasidone's metabolic risk is among the lowest in the class, but monitoring is still standard.
• Akathisia. Ask about restlessness at every early visit, it is common in the first six weeks with lurasidone and is treatable. A prescriber may lower the dose, slow the pace of increases, or add a medication to settle it.
• Movement effects. An involuntary-movement screen (AIMS) every six months looks for tardive dyskinesia over the long term.
• Renal and hepatic function at baseline if there are risk factors, since dosing changes with impairment.
• Blood pressure at baseline and periodically.
• Prolactin may be checked if symptoms suggest it, though rises tend to be smaller than with risperidone or paliperidone.

Metformin co-commencement. Aoife Carolan / Schizophrenia Bulletin guideline.

A clinical guideline led by Aoife Carolan strongly recommends co-commencing metformin alongside high-risk antipsychotics like olanzapine or clozapine. This proactive approach helps mitigate severe metabolic side effects, significantly reducing antipsychotic-induced weight gain and improving insulin resistance. The Schizophrenia Bulletin guideline states that when prescribing olanzapine or clozapine, metformin should be initiated immediately to prevent weight gain and cardiometabolic issues. Lurasidone is lower metabolic risk in the guideline; metformin is recommended when other cardiometabolic conditions are present, and metformin should be started if weight rises by more than 3 percent of pre-medication weight.

Typical titration used in the guideline: 500 mg once daily → 500 mg twice daily after one week → 500 mg increments every two weeks as tolerated → up to 1000 mg twice daily by about week six. Contraindicated with eGFR below 30 mL/min/1.73 m²; renal function is checked annually and metformin is held during acute illness or dehydration.

Source: Carolan A, et al. Metformin for the Prevention of Antipsychotic-Induced Weight Gain: Guideline Development and Consensus Validation. Schizophrenia Bulletin. 2025;51(5):1193 to 1203.

What to expect

Common side effects

Most people get some side effects. The common ones include:

• Restlessness or an inability to sit still, akathisia. This is the notable side effect of lurasidone.
• Nausea, sometimes eased by taking it with a larger meal.
• Sedation, usually milder than with quetiapine or olanzapine.
• Stiffness, tremor, or slowed movement.
• Runny nose or mild GI upset.

Akathisia is worth flagging early, because it is treatable. A prescriber may lower the dose, slow the pace of increases, or add a medication such as a beta-blocker to settle it. Many of the milder early effects ease within the first weeks. If a side effect is severe, or it is not improving, that is a conversation to have with the prescriber rather than a reason to stop on your own.

Serious side effects and warnings

Serious problems are uncommon, but a few are worth knowing.

Boxed warning. Like all antipsychotics, lurasidone carries an FDA boxed warning that it increases the risk of death in older adults with dementia-related psychosis, and antipsychotics are not approved for that use. Because lurasidone is used for bipolar depression, the antidepressant boxed warning also applies: medications used for depression can increase suicidal thoughts and behaviors in children, teenagers, and young adults under 25, especially early in treatment or after a dose change. The early period deserves close attention, and any worsening of mood, agitation, or new thoughts of self-harm should prompt contact with the prescriber promptly.

• Metabolic effects. Weight gain and rises in blood sugar and cholesterol are usually small on lurasidone, but they can happen and are monitored.
• Tardive dyskinesia. A movement disorder linked to long-term antipsychotic use, involving repetitive involuntary movements, often of the face or mouth. The risk rises with longer use.
• Neuroleptic malignant syndrome. A rare but serious reaction. Signs include high fever, muscle stiffness, confusion, and an unstable heartbeat or blood pressure. It is a medical emergency.
• Activation in bipolar disorder. As with any medication used in bipolar depression, an unrecognized switch into hypomania or mania is possible. Any sudden change toward feeling wired, sleepless, or unusually elevated should be reported to the prescriber.

Sexual side effects

Lurasidone has a relatively low rate of sexual side effects compared with some other antipsychotics, in part because it raises prolactin less than risperidone and paliperidone. Reduced desire or difficulty with arousal are still possible for some people. If that happens, it is worth raising with a prescriber rather than living with it, because there are usually options.

Weight, appetite, and sleep

Lurasidone is one of the more weight-neutral antipsychotics. On average, weight change is small, and shifts in blood sugar and cholesterol tend to be modest. Weight, blood sugar, and cholesterol are still checked periodically. Sedation is usually milder than with quetiapine, and many people take lurasidone in the evening with dinner. If daytime sedation or sleep problems are a concern, that is worth discussing with the prescriber.

Starting and dosing basics

This section is general background, not a dosing instruction for any individual. The right dose is a decision for a prescriber.

Lurasidone comes as tablets taken once daily. Each dose must be taken with a meal of at least 350 kilocalories, otherwise absorption drops and blood levels may be too low to work. Many people take it with dinner as a routine that fits the food requirement. Doses are lower to start in bipolar depression than in schizophrenia. Renal and hepatic impairment reduce the maximum dose. The prescriber chooses a starting dose and adjusts it gradually based on how a person responds and tolerates it.

Missed doses and interactions

If you miss a dose, the general guidance is to take it when you remember, unless it is almost time for the next dose. In that case, skip the missed dose and carry on. Don't take two doses to make up for one.

Lurasidone is heavily processed by a liver enzyme called CYP3A4. Strong CYP3A4 inhibitors, including ketoconazole, clarithromycin, ritonavir, and grapefruit or grapefruit juice, are contraindicated or should be avoided because they can raise lurasidone levels significantly. Strong CYP3A4 inducers, including rifampin, carbamazepine, phenytoin, and St. John's Wort, should also be avoided because they can lower lurasidone levels to the point that it stops working. The prescriber and pharmacist need a full list of your medications and supplements, including over-the-counter ones. Alcohol is not formally prohibited, but it can worsen sedation and is generally best limited.

Stopping and tapering

Stopping lurasidone should be gradual and planned with a prescriber. The body adjusts to the medication over time, and stopping suddenly can cause a return of symptoms. A prescriber can step the dose down over time in a way that fits the situation. Deciding to stop because you feel better is understandable, but it is still worth doing slowly and with guidance.

Pregnancy and breastfeeding

This is an area where individual circumstances matter and the decision belongs with a clinician. Untreated bipolar disorder and psychosis carry their own significant risks during pregnancy, and lurasidone also passes into breast milk. None of that adds up to one answer that fits everyone. Anyone who is pregnant, planning a pregnancy, or breastfeeding should talk it through with their prescriber so the specific risks and benefits can be weighed for their situation. This is not medical advice.

Cost and generic availability

Lurasidone has been available as a generic for a few years and is dropping in price, though it is still typically more expensive than older generic antipsychotics like risperidone or ziprasidone. The brand name Latuda and generic lurasidone contain the same active medication and work the same way. Most insurance plans cover the generic tablets, and patient-assistance programs are available for people who need the brand.

Common questions

Why bipolar depression, not just mania? Lurasidone is one of the few antipsychotics with FDA approval for the depressed phase of bipolar I disorder, either on its own or added to lithium or valproate. Bipolar depression is often harder to treat than mania and doesn't respond well to standard antidepressants alone, which can sometimes trigger mania. Lurasidone has been shown to help mood in bipolar depression without carrying that same switch risk, which is part of why it is used there.

Why does the meal matter? Lurasidone's absorption depends on food. Without a meal of at least about 350 kilocalories, absorption drops substantially, and blood levels can be too low to work. Taking it with dinner is the most common routine that fits the requirement. Skipping the meal is a common reason lurasidone can seem not to be working when the dose is actually fine.

What is akathisia? Akathisia is a feeling of restlessness and an inability to sit still, often with an urge to keep moving. It is the most notable early side effect of lurasidone. It is treatable, a lower dose, a slower titration, or a medication like propranolol can settle it, so it is worth reporting to the prescriber early.

Will it make me gain weight? On average, weight change on lurasidone is small, and shifts in blood sugar and cholesterol tend to be modest. It is one of the more weight-friendly antipsychotics. Weight, blood sugar, and cholesterol are still monitored.

Can I drink grapefruit juice on it? No. Grapefruit and grapefruit juice can raise lurasidone levels significantly by blocking the CYP3A4 enzyme that clears it. They should be avoided while on lurasidone.

Questions to ask your prescriber

• What are we hoping this treats, and how will we know it's working?
• What counts as a "meal" for the food requirement, and what should I do if I can't eat?
• Which side effects should I expect early, and which ones should I call about?
• What should I watch for in terms of restlessness, and what would we do if it happens?
• If we decide to stop it later, how would we do that safely?

Sources

This guide draws on current prescribing information and public health references. It is reviewed for clinical accuracy and updated as guidance changes, and current as of June 8, 2026.

• U.S. Food and Drug Administration. Prescribing information (DailyMed).
• MedlinePlus, U.S. National Library of Medicine.
• National Institute of Mental Health.
• American Psychiatric Association. Practice Guideline for the Treatment of Patients with Schizophrenia, 3rd edition.
• National Institute for Health and Care Excellence (NICE). CG178, Psychosis and schizophrenia in adults.
• American Diabetes Association / American Psychiatric Association. Consensus Statement on Antipsychotic Drugs and Obesity and Diabetes.
• Carolan A, et al. Metformin for the Prevention of Antipsychotic-Induced Weight Gain: Guideline Development and Consensus Validation. Schizophrenia Bulletin. 2025;51(5):1193 to 1203.