What is it prescribed for?
Bysant ™ is a newly approved medication for treating schizophrenia in adults and for the acute treatment of manic or mixed episodes associated with bipolar I disorder in adults. These serious mental health conditions can deeply affect a person’s thoughts, emotions, and ability to function. Schizophrenia can cause hallucinations, delusions, and disorganized thinking, while bipolar I disorder can trigger periods of extreme energy, rapid speech, irritability, or severe mood swings. Many patients struggle to find medications that work well with tolerable side effects. Because of this, new treatments like Bysanti are important additions to psychiatric care. The FDA approved Bysanti on February 20, 2026.
What is the name of the drug and what does it do?
The medication is BYSANTI™ (milsaperidone), an oral antipsychotic that helps stabilize mood, reduce psychotic symptoms, and bring thinking and behavior back into balance. It is taken by mouth, usually once or twice per day depending on a patient’s needs. Bysanti helps manage both the long-lasting symptoms of schizophrenia and the sudden, intense mood shifts seen in bipolar I disorder. Because it acts on multiple brain pathways, it may help patients who have not responded well to other treatments.
How does it work?
Bysanti works by blocking several key receptors in the brain, including dopamine, serotonin, and neurokinin-1 (NK1) receptors. Dopamine imbalance is linked to hallucinations and delusions, while serotonin pathways affect mood and emotional regulation. NK1 receptors respond to substance P, which is involved in stress and agitation. By acting on all three systems, milsaperidone helps calm overactive signaling, improve mood stability, reduce agitation, and decrease psychotic symptoms. This mixed-receptor activity sets Bysanti apart from many older antipsychotics.
What did the research discover?
Clinical studies showed that Bysanti improved core symptoms in both schizophrenia and bipolar I disorder. Patients taking Bysanti experienced:
- Fewer hallucinations and delusions
- Reduced agitation and irritability
- More organized thinking
- Improvements in manic symptoms such as high energy and pressured speech
During acute manic or mixed episodes, patients improved more quickly compared with placebo. In schizophrenia studies, symptom reductions were consistent over the treatment period. Many participants showed meaningful improvement without the need to switch medications. These results supported FDA approval.
What are some of the side effects?
Most side effects were mild to moderate. The most common included:
- Drowsiness or fatigue
- Dizziness
- Nausea
- Headache
- Increased appetite
Some patients may experience movement-related symptoms, changes in heart rhythm, or shifts in blood pressure. All antipsychotic medications require careful monitoring, especially during the first weeks of therapy. Patients should immediately report symptoms such as muscle stiffness, fever, irregular heartbeat, or uncontrolled movements.
What are the dosage recommendations and how is it prescribed?
Bysanti is taken by mouth in capsule form. The dosing schedule depends on the condition being treated. For schizophrenia, clinicians usually begin with a daily dose and adjust based on symptoms and tolerability. For acute manic or mixed episodes in bipolar I disorder, doses may start slightly higher or be taken twice daily to maintain steady medication levels. Bysanti can be taken with or without food. It is important that patients continue the medication regularly and attend follow-up visits to ensure their dosing is monitored so that it remains appropriate and safe.
Source:
BYSANTI™ (milsaperidone) capsules, for oral use [prescribing information]. Washington (DC): Vanda Pharmaceuticals Inc.; 2026. Available from: https://assets.vandapharma.com/Bysanti/Prescribing_Information.pdf. Accessed by: June 6, 2026.
