What Is Ziprasidone? Uses, Dosage, and What You Need to Know in 2026

Ziprasidone is an atypical antipsychotic medication that has been FDA-approved since 2001. Sold under the brand name Geodon, it's used primarily to treat schizophrenia and bipolar disorder. If you or a loved one has just been prescribed ziprasidone, this guide covers everything you need to know to start treatment safely and effectively.

What Is Ziprasidone Used For?

Ziprasidone is FDA-approved for the following conditions:

• Schizophrenia (oral capsules) — Both for acute episodes and long-term maintenance therapy
• Bipolar I disorder — acute manic or mixed episodes (oral, as monotherapy)
• Bipolar I disorder — maintenance (as an adjunct to lithium or valproate)
• Acute agitation in schizophrenia (intramuscular injection only — administered in a medical setting)

Doctors also use ziprasidone off-label for treatment-resistant depression, ICU delirium, and agitation from other causes. However, these uses have not been formally approved by the FDA.

What Form Does Ziprasidone Come In?

Ziprasidone is available in two forms:

• Oral capsules: Available in 20 mg, 40 mg, 60 mg, and 80 mg. This is the standard form for long-term treatment.
• Intramuscular (IM) injection: 20 mg/mL powder for reconstitution. Only administered in a hospital or clinical setting for acute agitation — not for home use.

How Do You Take Ziprasidone?

always take it with food. Taking ziprasidone on an empty stomach can cut its absorption roughly in half — meaning you could be getting far less medication than your doctor intended. A meal of at least 500 calories is ideal.

Additional dosing guidance:

• Taken twice daily (morning and evening, with meals)
• Swallow capsules whole — do not crush or chew
• Take at the same time each day to maintain consistent blood levels
• If you miss a dose, take it as soon as you remember with food. If it's close to your next dose, skip the missed one — don't double up.

Typical Dosage for Adults

Dosing is individualized based on your condition and how well you tolerate the medication:

• Schizophrenia: Start at 20 mg twice daily; maintenance typically 40–80 mg twice daily
• Bipolar mania: Start at 40 mg twice daily; titrate up to 60–80 mg twice daily as needed; mean dose in clinical trials was approximately 120 mg/day
• Maximum dose: 160 mg/day (80 mg twice daily)

Is Ziprasidone a Controlled Substance?

No. Ziprasidone is not scheduled by the DEA. It does not have abuse potential like stimulants or benzodiazepines, and prescriptions do not have controlled substance restrictions. You can receive 90-day prescriptions, refills, and electronic prescriptions without the restrictions that apply to Schedule II–IV substances.

How Long Does It Take to Work?

Most patients begin to notice some effect within 1–2 weeks of starting ziprasidone. Full therapeutic benefit for schizophrenia symptoms may take 4–6 weeks. For bipolar mania, some improvement may be seen more quickly. Do not stop taking ziprasidone if you feel it isn't working right away — give it the time your doctor recommends before reassessing.

For detailed information on what side effects to expect, see our guide on ziprasidone side effects. And if you're having trouble filling your prescription, medfinder can find a pharmacy near you with ziprasidone in stock.