Modafinil Viatris (Modafinil)
Complete patient guide for uses, dosage, side effects, and safety information
Quick Facts
What Is Modafinil Viatris Used For?
Modafinil Viatris is a medication that helps improve wakefulness in individuals experiencing excessive sleepiness due to certain medical conditions.
Primary Uses
It is primarily used for treating excessive daytime sleepiness associated with narcolepsy, Obstructive Sleep Apnoea/Hypopnoea Syndrome (OSAHS), and Shift Work Sleep Disorder (SWSD).
How It Works
Modafinil acts on the central nervous system to promote wakefulness without causing the 'high' associated with other stimulants.
Good to know: Modafinil is not considered addictive.
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How to Take Modafinil Viatris
Follow your doctor's instructions on how to take Modafinil Viatris for the best results.
Dosage Instructions
The usual dose ranges from 200 mg to 400 mg daily, depending on the condition being treated. For SWSD, a dose of 200 mg is recommended. Take the tablets in the morning or as directed by your doctor.
What If You Miss a Dose?
If you miss a dose, take it at your usual time. Do not double up on doses.
Important: Never take more than the prescribed dose unless directed by your doctor.
Available Tablet Strengths
Side Effects
Like all medications, this medicine can cause side effects. Most are mild and temporary, but some require medical attention.
Common Side Effects
These side effects occur relatively frequently and usually don’t require emergency care:
- headache
- runny nose
- sore throat
- back pain
- nausea
- diarrhea
- dry mouth
- poor appetite
- upset stomach
- dizziness
- anxiety
- trouble sleeping
Seek immediate medical attention if you experience:
- mental health symptoms (depression, anxiety, aggression, hallucinations)
- chest pain or abnormal heart rhythms
- fits or convulsions
- serious skin rash (hives, sores, peeling skin)
- swelling of face, lips, or throat
- trouble breathing
- fever, shortness of breath, swelling of legs, yellowing of skin or eyes
Impulse Control Issues
Be aware that Modafinil may lead to issues with impulse control, including gambling and spending behaviors.
Important Warnings
There are several important considerations to keep in mind before using Modafinil Viatris.
Who Should Not Take Modafinil Viatris
Do not use this medication if you are allergic to modafinil or any of its ingredients, are pregnant, or are breastfeeding.
Medical Conditions to Discuss
Inform your doctor if you have a history of mental health issues, heart problems, high blood pressure, or liver and kidney issues.
Pregnancy and Breastfeeding
Modafinil may cause birth defects if taken during pregnancy. Confirm you are not pregnant before starting treatment.
Elderly Patients With Dementia: Caution is advised for elderly patients, especially those with dementia.
Drug Interactions
Certain medications can interact with Modafinil Viatris, affecting its efficacy.
Grapefruit interaction: Consult your doctor if you consume grapefruit, as it may affect how Modafinil works.
- methylphenidate
- monoamine oxidase inhibitors (MAOIs)
- phenytoin
- carbamazepine
- phenobarbital
- ketoconazole
- itraconazole
- sedatives
- rifampicin
- ciclosporin
- propranolol
- warfarin
- theophylline
Alcohol & Driving
Caution is advised when consuming alcohol or operating machinery while taking Modafinil.
Alcohol
Discuss alcohol consumption with your doctor, as it may interact with Modafinil.
Driving and Operating Machinery
Do not drive or operate machinery until you know how Modafinil affects you, as it may cause dizziness.
Storage
Store Modafinil Viatris tablets in a cool, dry place below 25°C, away from moisture and direct sunlight.
Overdose Information
If you suspect an overdose, seek immediate medical attention. Contact the Poisons Information Centre at 13 11 26 or go to the nearest hospital.
Frequently Asked Questions
Modafinil typically starts to work within 1 to 2 hours after taking it.
Yes, you can take Modafinil Viatris with or without food.
No, Modafinil is not considered addictive.
Do not stop taking Modafinil suddenly without consulting your doctor, as it may lead to a return of sleepiness.
Discuss alcohol use with your doctor, as it may interact with the medication.
Weight gain is not commonly associated with Modafinil use.
Elderly patients should use Modafinil with caution, especially if they have dementia.
If you miss a dose, take it at your usual time; do not double up on doses.
Important Disclaimer
This information is intended for general educational purposes only and should not be considered medical advice. Always consult your healthcare provider or pharmacist before starting, stopping, or changing any medication.
If you think you may have a medical emergency, call your doctor or emergency services immediately.