What is Versacloz? Uses, warnings & side effects

Updated May 14, 2025  •  Published May 20, 2022

Versacloz overview

BRAND NAMES:

  • Clozaril, FazaClo, Versacloz

Generic Names:

  • Versacloz

Uses:

  • Treats schizophrenia. Also lowers the risk of suicidal behavior in patients who have schizophrenia or schizoaffective disorder.

Therapeutic Classes:

  • Antipsychotic

Forms:

  • Liquid, Tablet, Dissolving Tablet

How it’s taken:

  • By mouth

What is Versacloz used for?

What form(s) does Versacloz come in?

  • Liquid

  • Tablet

  • Dissolving Tablet

What are common Versacloz dosages?

  • Bottle 100ML of 50MG/ML

Versacloz images - What does Versacloz look like?

  • Versacloz
    100ml of 50mg/ml bottle

How to take Versacloz

  • Take your medicine as directed. Your dose may need to be changed several times to find what works best for you.

  • Make sure your hands are dry before you handle the disintegrating tablet. Peel back the foil from the blister pack, then remove the tablet. Do not push the tablet through the foil. Place the tablet in your mouth. After it has melted, swallow or take a drink of water. The disintegrating tablet may also be chewed.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Oral suspension: Do not refrigerate or freeze. Throw away any unused medicine 100 days after you open the bottle for the first time.

  • Oral suspension: Shake for 10 seconds before each use. Measure the dose with the dosing syringe that comes with the package.

  • Read and follow the patient instructions that come with this medicine. Talk to your doctor or pharmacist if you have any questions.

  • Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose. Call you doctor if you miss your dose for longer than 2 days. Your dose may need to be changed.

What to do if you miss a dose of Versacloz

Versacloz contraindications - Who shouldn't take Versacloz?

  • This medicine is not right for everyone. Do not use it if you had an allergic reaction to clozapine.

Versacloz warnings

  • Tell your doctor if you are pregnant or breastfeeding, or if you have kidney disease, liver disease, diabetes, digestion problems, glaucoma, heart or blood vessel disease, heart failure, heart rhythm problems, enlarged prostate, or a history of head injury, heart attack, stroke, seizures, or alcohol addiction. Tell your doctor if you smoke or drink products that contain caffeine. Tell your doctor if you have phenylketonuria.

  • This medicine may cause the following problems:Neutropenia (blood disorder that can lead to serious infections)Heart problems or changes in heart rhythmChanges in blood sugar levelsNeuroleptic malignant syndrome, which can be life-threateningLiver problemsIncreased risk of blood clots, including strokeTardive dyskinesia (a movement disorder)

  • This medicine can make you dizzy, drowsy, lightheaded, or to have trouble with thinking or controlling body movements, which may lead to falls, fractures or other injuries. Do not drive or do anything else that could be dangerous until you know how this medicine affects you. Stand or sit up slowly if you feel lightheaded or dizzy.

  • Drink plenty of liquids to help avoid constipation.

  • Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

  • Increased thirst or hunger

  • Jerky muscle movement that you cannot control, often in your face, tongue, or jaw

  • Lightheadedness, dizziness, fainting

  • Seizures

  • Unusual bleeding, bruising, or weakness

Versacloz interactions & what to avoid when taking Versacloz

  • Do not drink alcohol while you are using this medicine.

  • Tell your doctor if you use anything else that makes you sleepy. Some examples are allergy medicine, narcotic pain medicine, and alcohol.

  • Drink plenty of liquids to help avoid constipation.

  • Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

  • Some medicines can affect how clozapine works. Tell your doctor if you are using any of the following:Bupropion, carbamazepine, cimetidine, dolasetron, duloxetine, enoxacin, escitalopram, fluoxetine, fluvoxamine, levomethadyl acetate, lithium, mefloquine, methadone, paroxetine, pentamidine, phenytoin, rifampin, sertraline, St John's wort, tacrolimus, or terbinafineBirth control pillsBlood pressure medicineDiuretic (water pill)Medicine for heart rhythm problems (including amiodarone, encainide, flecainide, procainamide, propafenone, quinidine, sotalol)Medicine to treat an infection (including ciprofloxacin, erythromycin, gatifloxacin, moxifloxacin, sparfloxacin)Other medicine to treat mental health problems (including chlorpromazine, droperidol, iloperidone, pimozide, thioridazine, ziprasidone).

Versacloz side effects - How does Versacloz make you feel?

Serious Side Effects

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Blistering, peeling, red skin rash

  • Chest pain, trouble breathing, numbness or weakness on one side of your body, lower leg pain, problems with vision, speech, or walking

  • Unusual bleeding, bruising, or weakness

  • Jerky muscle movement that you cannot control, often in your face, tongue, or jaw

  • Sweating, confusion, heartbeat, muscle stiffness

  • Seizures

  • Increased thirst or hunger

  • Dark urine or pale stools, nausea, vomiting, loss of appetite, stomach pain, yellow skin or eyes

  • Lightheadedness, dizziness, fainting

  • Fever, chills, cough, sore throat, body aches

  • Fast, slow, pounding, or uneven heartbeat

Less Serious Side Effects

  • Weight gain

  • Excess saliva or drooling

  • Constipation, stomach upset

  • Unusual drowsiness or sleepiness, headache

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