Olanzapine
About Olanzapine
Olanzapine is a prescription medicine used to treat schizophrenia and manic or depressive episodes associated with bipolar disorder. It helps restore the balance of certain natural chemicals in the brain to improve thinking, mood, and behaviours. Doctors may prescribe it alone or alongside other treatments to help manage these long-term mental health conditions.
To get the most benefit, you should take Olanzapine consistently every day at the same time, exactly as prescribed by your doctor. You can take this medicine with or without food, making it easy to incorporate into your daily routine. Combining this treatment with regular sleep habits, a balanced diet, and routine physical activity can significantly support your long-term health outcomes.
While taking Olanzapine, you may experience common side effects like sleepiness, dry mouth, or increased appetite. Most of these are mild, but you should contact your doctor immediately if you experience serious side effects such as high fever, severe muscle stiffness, or unusual, uncontrolled movements of your face or tongue.
Before starting this medicine, tell your doctor if you have a history of diabetes, high cholesterol, liver damage, or heart problems. Do not take this if you are allergic to any of the ingredients in Olanzapine, or if you are at risk for certain eye conditions like narrow-angle glaucoma.
Drinking alcohol while taking Olanzapine can make you feel excessively sleepy and dizzy, so it is best avoided. Smoking can speed up how quickly your body clears this medicine, potentially making it less effective, so tell your doctor if you smoke or plan to quit. If you are pregnant, breastfeeding, or caring for an elderly patient with dementia, talk to your doctor or pharmacist before using this medicine, as special precautions are needed.
Uses of Olanzapine
• Bipolar Disorder Management: Olanzapine is frequently used to help stabilize mood and lessen the frequency of mood swings by treating the manic and depressed episodes linked to bipolar disorder.
• Treatment for Schizophrenia: This drug helps people with schizophrenia manage symptoms like delusions, hallucinations, and disordered thinking, which helps them live healthier lives.
• Generalized Anxiety Disorder: Olanzapine may be recommended to treat the symptoms of generalized anxiety disorder, allowing patients to feel less stressed and anxious.
• Adjunctive Therapy for Major Depressive Disorder: Olanzapine is sometimes used as an adjuvant treatment to help people with major depressive disorder who are not responding well to conventional antidepressants.
Medicinal Benefits
Olanzapine helps manage symptoms of serious mental health conditions by improving mood stability, reducing psychotic symptoms, and supporting overall daily functioning. With regular use as prescribed, it helps improve emotional well-being and quality of life.
- Stabilises Mood: This medicine helps reduce severe mood swings and emotional highs and lows, promoting greater emotional balance and stability.
- Improves Thinking and Focus: By reducing hallucinations, disorganised thinking, and suspicious thoughts, this medicine helps improve concentration, mental clarity, and the ability to carry out daily tasks.
- Supports Healthy Sleep: Regular use helps improve disturbed sleep patterns, promoting better rest and supporting emotional recovery and daytime energy.
- Enhances Daily Functioning: By controlling symptoms, this medicine helps you participate more comfortably in work, school, social activities, and everyday responsibilities with greater confidence and independence.
Directions for Use
- Olanzapine can be taken with food to help reduce the risk of stomach upset.
- Follow your doctor's instructions on the dosage and timing of this medication.
- Swallow Olanzapine as a whole with a glass of water.
- Do not crush, break, or chew it.
Storage
Side Effects of Olanzapine
Common Side Effects (Usually mild):
- Drowsiness or extreme sleepiness
- Weight gain and increased appetite
- Dry mouth
- Mild dizziness, especially when standing up quickly
- Constipation
Serious Side Effects (Consult a doctor right away):
- Signs of high blood sugar, such as extreme thirst, frequent urination, and unusual tiredness
- Uncontrolled twitching, shaking, or movements of your face, tongue, or limbs
- High fever, severe muscle stiffness, sweating, and fast heartbeat
- Severe dizziness or fainting
- Signs of liver damage, like yellowing of your skin or eyes (jaundice) and dark urine
- A severe allergic reaction, such as a rash, hives, swelling of the face, lips, or throat, or difficulty breathing
Medicines Containing this Salt
View AllDrug Warnings
- Avoid driving, riding a bicycle, or operating machinery until you know how Olanzapine affects you, as it can cause significant drowsiness and slow your reaction times.
- Avoid getting overheated or dehydrated. This medicine can make it harder for your body to cool down, especially during hot weather or intense physical exercise.
- Do not stop taking Olanzapine abruptly. Stopping suddenly can trigger withdrawal symptoms or cause your mental health condition to worsen. Your doctor will help you by gradually decreasing your dose if you need to stop.
- Keep all laboratory appointments. Your doctor will need to run regular blood tests to check your liver function, blood sugar, and lipid levels.
- Be cautious when consuming caffeine, as high amounts of coffee, tea, or energy drinks can change the levels of this medicine in your body.
Drug Interactions
- Blood pressure medications: Combining these with Olanzapine may cause your blood pressure to drop too low, leading to dizziness or fainting.
- Sedatives and sleeping pills: Taking these alongside Olanzapine can cause severe drowsiness, slowed breathing, and coordination problems.
- Parkinson's disease medications: Olanzapine may decrease the effectiveness of these medications, potentially worsening movement symptoms.
Drug-Drug Interactions Checker List:
Safety Advice
Alcohol
unsafeIt is advised to avoid alcohol consumption while taking Olanzapine. Alcohol intake and Olanzapine may cause increased dizziness and drowsiness. Please consult your doctor for more information.
Pregnancy
cautionOlanzapine is a pregnancy category C drug. Using antipsychotic drugs during the third trimester of pregnancy can cause muscle problems in newborn babies. Please inform your doctor before taking Olanzapine if you are pregnant or planning to conceive. Your doctor will weigh the potential risks and benefits before prescribing Olanzapine.
Breast Feeding
unsafeOlanzapine is excreted into the breast milk; hence it is not recommended for a nursing mother. Inform your doctor before taking Olanzapine if you are a breastfeeding mother.
Driving
unsafeOlanzapine may make you feel dizzy or drowsy. Do not drive if you are not mentally alert or experience any symptoms that affect your ability to drive or operate machinery.
Liver
cautionDose adjustment may be needed in patients with liver impairment. Please inform your doctor if you have a liver impairment or any concerns.
Kidney
cautionPlease inform your doctor before using Olanzapine if you suffer from severe kidney impairment. Your doctor may adjust the dose if necessary based on your condition.
Children
cautionOlanzapine is not recommended in people below 12 years of age.
Habit Forming
Diet & Lifestyle Advise
- Manage Your Weight: Olanzapine can increase your appetite and lead to weight gain. Keep a food diary, practise portion control, and focus on nutrient-dense foods like vegetables, lean proteins, and whole grains.
- Monitor Blood Sugar and Lipids: Since this medicine can affect how your body processes sugars and fats, schedule regular blood tests with your doctor to monitor your glucose and cholesterol levels.
- Stay Hydrated: Drink plenty of water throughout the day to help manage dry mouth and reduce the risk of constipation.
- Stand Up Slowly: To prevent dizziness or lightheadedness caused by a sudden drop in blood pressure, take your time when rising from a sitting or lying position.
- Limit Sugary Drinks: Avoid high-calorie sodas and juices, which can contribute to weight gain and blood sugar spikes while taking this medication.
Special Advise
- Let your doctor know that you are taking Olanzapine if you are undergoing any medical tests.
- Weight gain has been noticed in patients who use Olanzapine; hence, please take measures accordingly.
- High blood pressure is also recorded in patients using this medicine; hence take appropriate measures accordingly by consulting your doctor.
- Olanzapine may affect blood glucose levels. Hence it is advised to monitor blood sugar levels regularly while using Olanzapine.
- Timely monitoring of the cholesterol/triglyceride levels and Prolactin hormone levels is advised for the patient while using this medicine.
Patients Concern
Disease/Condition Glossary
Schizophrenia: It is a condition in which the person may see, hear or feel things that are not there, believe things that are not true, or feel unusually suspicious or confused. Symptoms include hallucinations, delusions, thought disorders, movement disorders, disorganised thinking, loss of interest, lack of emotions, etc. Schizophrenia is triggered by physical, genetic, psychological, and environmental factors. Patients suffering from this disease may require lifelong treatment. Treatment involves a combination of medications, psychotherapy and care services.
Manic depression (bipolar disorder): A serious brain disorder in which a person goes through unusual mood changes (mood swings) and frequent changes in his/her behaviour and thinking.
FAQs
Olanzapine is used to treat schizophrenia and manic depression (bipolar disorder).
Olanzapine contains Olanzapine which works by balancing the chemical messengers like dopamine and serotonin located in the brain, improving mood, behaviour and thoughts.
Olanzapine should be used with caution in the medical history of allergic reactions, liver or kidney diseases, heart problems, breathing problems, Alzheimer's disease, high cholesterol, glaucoma, diabetes, stomach/intestinal problems, breathing problem during sleep (sleep apnea), low white blood cell count, breast cancer, enlarged prostate, or fits. Please let your doctor know if you have any other medical problems before starting Olanzapine.
Olanzapine may make you sweat less and can likely cause heart stroke. Hence, limiting activities that cause overheating, like an exercise in hot weather or using hot tubs, is advised. Drink plenty of fluids and dress lightly.
Olanzapine may cause dizziness. It is advised to avoid getting up too fast from a sitting or lying position that can make you feel dizzy.
Olanzapine can cause side effects like orthostatic hypotension (sudden lowering in blood pressure leading to dizziness on standing). If you experience this, do not try to stand up suddenly or start walking; instead, lie down and get up slowly only when you feel better. People taking Olanzapine are advised to regularly monitor their blood pressure levels to avoid such unpleasant events. It is also advised to be aware of a condition called tardive dyskinesia (uncontrolled movements of the face, lips, mouth, tongue, arms or legs) that may rarely occur while using this medicine.
No, Olanzapine is not a sleeping aid. It's an antipsychotic medication used to treat bipolar disorder and schizophrenia, not insomnia. If you need help with sleep, consult your healthcare provider or pharmacist for appropriate guidance and treatment.
Olanzapine is an antipsychotic medication that takes time to start working. It may take several weeks (typically 4-6 weeks or longer) to notice significant symptom improvements. Be patient and consistent with your medication regimen, and schedule regular follow-ups with your healthcare provider to monitor progress and adjust the treatment plan as needed. They will help you assess the medication's effectiveness and make any necessary adjustments.
Do not stop taking Olanzapine suddenly; otherwise, your symptoms may return. If you need to stop taking olanzapine, your doctor will help you come off it by gradually reducing your dose. This will help prevent withdrawal symptoms.
There are no adequate, well-controlled studies in pregnant women. Please inform your doctor before taking Olanzapine if you are pregnant or planning pregnancy. Your doctor will weigh the potential risks and benefits before prescribing Olanzapine.
Olanzapine is not indicated for use in children and adolescents under 18. Please seek medical advice.
Olanzapine may cause dizziness or drowsiness. To ensure your safety, avoid driving or operating machinery if you're not mentally alert or experiencing symptoms that affect your concentration.
Yes, many people use Olanzapine for extended periods, including several months or years, without any problems. However, it's important to remember that you should only take Olanzapine as your healthcare provider prescribes. Regular monitoring and follow-up appointments with your healthcare provider are crucial to ensure the medication's safety and effectiveness. Your healthcare provider may also adjust your dosage or switch you to a different medication if needed.
When you start taking olanzapine, you may feel more relaxed and calmer. Within 2-3 weeks, you may notice improvements in your symptoms. Olanzapine can help you focus and think more clearly, stay on top of tasks, remember things more easily, connect with others, and distinguish between reality and delusions. It may also reduce or stop hearing voices.
Avoid drinking alcohol while taking olanzapine, especially during the initial treatment phase. Alcohol can exacerbate the medication's side effects, making you feel drowsy and unsteady. Excessive or daily alcohol consumption can worsen your symptoms and reduce the effectiveness of olanzapine. To ensure your safety and the medication's efficacy, it's best to abstain from alcohol or consult your healthcare provider for guidance.
Olanzapine is not typically used to treat anxiety, although some research has explored its potential in this area. It has not been approved for anxiety treatment, and your doctor will usually prescribe other medications as a first-line treatment for anxiety; however, if you're experiencing anxiety in conjunction with another condition that olanzapine is approved to treat, such as bipolar disorder or schizophrenia. In that case, your doctor may consider it part of your overall treatment plan.
The common side effects of the Olanzapine are nausea, vomiting, diarrhea, constipation, sores in the mouth and throat, pain, burning, or tingling in the hands or feet, pain, itching, redness, swelling, blisters, or sores in the place where the medication was injected, hair loss, pain, weakness, loss in ability to taste food. However, these symptoms vanish as your body adjusts to the medication. If these symptoms become worse, please consult a doctor for relief.
Taking Olanzapine during pregnancy requires careful consideration. It may cause withdrawal symptoms or movement issues in newborns if taken during the third trimester. Talk to your doctor to weigh the benefits against the potential risks for you and your baby.
Yes, weight gain is a common side effect of Olanzapine because it can increase your appetite and affect your metabolism. Eating a balanced diet and exercising regularly can help manage this, but you should talk to your doctor for personalised advice.
Yes, but you should keep your caffeine intake consistent. Sudden changes in how much coffee or tea you drink can change the level of Olanzapine in your blood, making it either less effective or increasing side effects. Talk to your doctor or pharmacist if you plan to make major changes to your caffeine habits.
No, you should not stop taking this medicine suddenly, even if you feel completely well. Stopping abruptly can cause your symptoms to return or lead to withdrawal effects. If you want to stop, talk to your doctor, who will guide you on gradually decreasing your dose.
Yes, drowsiness and sleepiness are very common when starting Olanzapine. This effect usually decreases over time, but you should avoid driving or operating machinery until you know how this medicine affects you. Talk to your doctor if the sleepiness is severe or does not improve.
Yes, you can take Olanzapine with or without food. Taking it with food can sometimes help if the medicine makes you feel slightly nauseous. Talk to your doctor or pharmacist if you have trouble swallowing the tablets.
Yes, Olanzapine can increase blood sugar levels and may lead to diabetes or worsen existing diabetes. Your doctor will likely order regular blood tests to monitor your sugar levels while you are on this medication. Talk to your doctor if you experience extreme thirst or frequent urination.

