Perseris injection?

Perseris® (risperidone) injection is a long‑acting antipsychotic used mainly for schizophrenia (and in some places it’s also used for bipolar disorder). It’s given as a once‑monthly injection (usually by a healthcare professional).

What it’s used for

• Schizophrenia: to help reduce symptoms like hallucinations, delusions, disorganized thinking, and aggression.

How it’s given

• Monthly subcutaneous injection (under the skin).
• Often the prescriber may confirm you can tolerate oral risperidone/paliperidone first, or may use an oral “overlap” strategy depending on your situation.

Common side effects

• Sleepiness or dizziness
• Weight gain
• Headache
• Tremor
• Restlessness (akathisia)
• Increased prolactin (can lead to breast tenderness/milk discharge, sexual side effects)
• Injection-site reactions (pain, redness)

Important warnings / when to seek help

Get medical help urgently if you have:

• Signs of allergic reaction
• Fever, severe muscle stiffness, confusion (rare but serious—possible neuroleptic malignant syndrome)
• Uncontrolled movements, severe stiffness, or extreme restlessness
• Fainting, chest pain, or severe irregular heartbeat

Key safety notes

• Can raise risk of high blood sugar/diabetes and cholesterol, and can affect movement disorders.
• If you miss a dose, contact your prescriber promptly—timing matters with long‑acting injections.

If you tell me what you’re looking for—dose/strength, how it works, side effects, how to switch to it, or what to do if a dose is missed—I can tailor the answer. Also, what country are you in (brands and indications can vary)?