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Fact Table
| Fact Table | |
|---|---|
| Formula | C23H27FN4O3 |
| License | FDA approved |
| Bioavailability | 28% (extended-release tablet) |
| Legal status | Prescription Drug |
| Chemical Name | 3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidyl]ethyl]-2-methyl-4-oxo-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-9-yl acetate |
| Elimination half-life | ~23 hours |
| Dosage (Strength) | 1.5mg, 3mg, 6mg, 9mg, 12mg extended-release tablets |
| Pregnancy | Use with caution; consult doctor |
| Brands | Invega, Invega ER |
| Protein binding | 74% |
| PubChem CID | 115237 |
| MedlinePlus | a607005 |
| ChEBI | 31225 |
| ATC code | N05AX13 |
| DrugBank | DB01267 |
| KEGG | D05340 |
| Routes of administration | By mouth |
Invega ER is an antipsychotic medication used treat schizophrenia and schizoaffective disorder, and it also may be prescribed for bipolar disorder or other mental / mood disorders. Paliperidone is a benzisoxazole derivate atypical antipsychotic that works to change the effect of chemicals in the brain to limit hallucinations, delusional thoughts, disordered thinking and other schizophrenia symptoms. It may also be used as an adjunct to other medications. You can buy Invega ER with a prescription here at Canpharm.
Directions
Standard Invega ER dosage is to take either Invega 3mg or 6mg 1x daily, with or without food. Dosage may vary and you should always take your medication exactly as indicated in your prescription.
Ingredients
The active ingredient in Invega ER is Paliperidone
Cautions
Let your doctor if you have any history of liver disease, kidney disease, heart disease, seizures, low white blood cell count, Parkinson's disease, dementia, esophagus or stomach / intestinal blockage disorders, cataracts, glaucoma, diabetes, high cholesterol and triglyceride levels, or sleep apnea before starting on Invega ER
This medication may cause a condition that causes QT prolongation, a heart rhythm disorder that may case irregular heartbeat or other symptoms that may require medical attention
It is best to avoid excessive alcohol consumption and all recreational drug use while taking Invega ER
Invega ER may make you dizzy or drowsy, and it may be advisable to avoid driving or operating machinery while taking this medication
This medication may make you less able to perspire, which will increase the risk of heat stroke for some people
Women who are pregnant or breast feeding should only take Paliperidone tablets if their doctor approves it
Interactions
Negative drug interactions may occur between Invega ER and other Rx or OTC medications, including amiodarone, chlorpromazine, moxifloxacin, quinidine, sotalol, procainamide, thioridazine, codeine, hydrocodone, alprazolam, lorazepam, carisoprodol, cyclobenzaprine, cetirizine, diphenhydramine. Let your doctor know of all medications you are currently taking before getting a prescription and proceeding to buy Invega ER online.
Side Effects
Invega Side effects may occur, and some users may experience drowsiness, dizziness, light headedness, drooling, stomach or abdominal pain, weight gain, or exhaustion. If side effects are seen you may want to discontinue use and meet with a doctor again to discuss schizoaffective disorder treatment medication alternatives and a pharmacist for a lower Paliperidone cost.
Frequently Asked Questions about Invega (Paliperidone)
What is Invega?
Invega (paliperidone) is an atypical antipsychotic medication used to treat schizophrenia and schizoaffective disorder. It helps balance certain brain chemicals (dopamine and serotonin) to reduce symptoms like hallucinations, delusions, and mood instability.
What is Invega used for?
Invega is used to treat:
- Schizophrenia in adults and adolescents (12+ years)
- Schizoaffective disorder, either alone or with mood stabilizers/antidepressants
Does Invega cause weight gain?
Yes, weight gain is a common side effect of Invega. It occurs due to increased appetite, metabolic changes, and fluid retention. Maintaining a healthy diet and exercise can help manage this.
How long does Invega stay in your system?
- Oral Invega (tablets): Eliminated in about 4–5 days (half-life ~23 hours)
- Invega Sustenna (monthly injection): Stays in the body for about 4–8 weeks
- Invega Trinza (3-month injection): Can stay in the system for several months after the last dose
Do Invega side effects go away?
Some side effects (like dizziness, nausea, and drowsiness) may lessen over time as the body adjusts. However, others (such as weight gain and hormonal changes) may persist. If side effects are severe, consult your doctor.
Is Invega a controlled substance?
No, Invega is not a controlled substance, but it requires a prescription from a healthcare provider.
How long does it take for Invega to work?
Invega starts working within a few days, but full effects may take 4–6 weeks as symptoms gradually improve.
Can you drink alcohol while taking Invega?
Drinking alcohol while taking Invega is not recommended as it can increase drowsiness, dizziness, and impair thinking. It may also worsen psychiatric symptoms.
Does Invega affect sleep?
Yes, Invega can cause insomnia or drowsiness, depending on how it affects your body. If sleep disturbances occur, talk to your doctor about possible adjustments.
Can Invega cause high prolactin levels?
Yes, Invega can increase prolactin levels, leading to breast enlargement, irregular periods, and lactation (even in males and non-pregnant females). If you notice these symptoms, consult your doctor.
