Skip to content
PIL Logo

Modafinil 100mg and 200mg tablets

Last Updated on eMC 14-Sep-2012 View changes  | Aurobindo Pharma - Milpharm Ltd. Contact details

The Patient Information Leaflet (PIL) is the leaflet included in the pack with a medicine. It is written for patients and gives information about taking or using a medicine. It is possible that the leaflet in your medicine pack may differ from this version because it may have been updated since your medicine was packaged.

Please click on the link to the left to view the PIL in PDF format.

Text only version for the visually impaired
Below is a text only representation of the Patient Information leaflet. The original may contain images or tables and can be viewed in PDF format using the link to the left. This PIL may be available from the RNIB in large print, Braille or audio CD. For further information please call the RNIB Medicine Leaflet line on 0800 198 5000. The product code(s) for this leaflet is/are: PL16363/0302 , PL16363/0301.

Modafinil 100mg and 200mg tablets


Modafinil 100 mg tablets

Modafinil 200 mg tablets


Read all of this leaflet carefully before you start taking this medicine because it contains important information for you.

  • Keep this leaflet. You may need to read it again.
  • If you have any further questions, ask your doctor or pharmacist.
  • This medicine has been prescribed for you only. Do not pass it on to others. It may harm them, even if their signs of illness are the same as yours.
  • If you get any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet.

What is in this leaflet:

1. What Modafinil is and what it is used for
2. What you need to know before you take Modafinil
3. How to take Modafinil
4. Possible side effects
5. How to store Modafinil
6. Contents of the pack and other information

1. What Modafinil is and what it is used for

The active ingredient in the tablets is modafinil.

Modafinil can be taken by adults who suffer from narcolepsy to help them to stay awake.

Narcolepsy is a condition that causes excessive daytime sleepiness and a tendency to fall asleep suddenly in inappropriate situations (sleep attacks). Modafinil may improve your narcolepsy and reduce the likelihood that you will have sleep attacks but there may still be other ways that you can improve your condition and your doctor will advise you.

2. What you need to know before you take Modafinil

Do not take Modafinil:

  • Are allergic (hypersensitive) to modafinil, or to any of the other ingredients of these tablets (see section 6 'What Modafinil contains').
  • Have an irregular heartbeat.
  • Have uncontrolled, moderate to severe high blood pressure (hypertension).

Warnings and precautions:

  • Have any heart problems or high blood pressure. Your doctor will need to check these regularly while you are taking Modafinil.
  • Have ever had depression, low mood, anxiety, psychosis (loss of contact with reality) or mania (over-excitement or feeling of extreme happiness) or bipolar disorder because Modafinil may make your condition worse.
  • Have kidney or liver problems (because you will need to take a lower dose).
  • Have had alcohol or drug problems in the past.

Children aged less than 18 years should not take this medicine.

Other things to talk to your doctor or pharmacist about

  • Some people have reported having suicidal or aggressive thoughts or behaviour while taking this medicine. Tell your doctor straight away if you notice that you are becoming depressed, feel aggressive or hostile towards other people or have suicidal thoughts or other changes in your behaviour (see section 4). You may want to consider asking a family member or close friend to help you look out for signs of depression or other changes in your behaviour.
  • This medicine has the potential for you to become reliant (dependent) on it after longterm use.

If you need to take it for a long time your doctor will check regularly that it is still the best medicine for you.

Other medicines and Modafinil

Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines. Modafinil and certain other medicines can affect each other and your doctor may need to adjust the doses that you are taking. It is especially important if you are taking any of the following medicines as well as Modafinil:

  • Hormonal contraceptives (including the contraceptive pill, implants, intrauterine devices (IUDs) and patches). You will need to consider other birth control methods while taking Modafinil, and for two months after stopping treatment, because Modafinil reduces their effectiveness.
  • Omeprazole (for acid reflux, indigestion or ulcers).
  • Antiviral medicines to treat HIV infection (protease inhibitors e.g. indinavir or ritonavir).
  • Ciclosporin (used to prevent organ transplant rejection, or for arthritis or psoriasis).
  • Medicines for epilepsy (e.g. carbamazepine, phenobarbital or phenytoin).
  • Medicines for depression (e.g. amitriptyline, citalopram or fluoxetine) or anxiety (e.g. diazepam).
  • Medicines for thinning the blood (e.g. warfarin). Your doctor will monitor your blood clotting times during treatment.
  • Calcium channel blockers or beta-blockers for high blood pressure or heart problems (e.g. amlodipine, verapamil or propranalol).
  • Statin medicines for lowering cholesterol (e.g. atorvastatin or simvastatin).

Pregnancy and breast-feeding

If you are pregnant (or think that you may be) are planning to become pregnant or are breastfeeding you should not take Modafinil. It is not known if your medicine may harm your unborn baby.

Talk to your doctor about the birth control methods that will be right for you while you are taking Modafinil (and for two months after stopping) or if you have any other concerns.

Driving and using machines

Modafinil can cause blurred vision or dizziness in up to 1 in 10 people. If you are affected or you find that while using this medication you still feel very sleepy, do not attempt to drive or operate machinery.

Modafinil tablet contains lactose. If you have been told by your doctor that you have an intolerance to some sugars contact your doctor before taking this medicinal product.

3. How to take Modafinil

Always take this medicine exactly as your doctor has told you. Check with your doctor or pharmacist if you are not sure.

Tablets should be swallowed whole with water.


The usual dose is 200 mg a day. This can be taken once daily (in the morning) or divided into two doses a day (100 mg in the morning and 100 mg at midday).

Your doctor in some cases may decide to increase your daily dose up to 400 mg.

Elderly patients (over 65 years of age)

The usual dose is 100 mg a day. This can be taken once daily (in the morning) or divided into two doses a day (50 mg in the morning and 50 mg at midday).

Your doctor will only increase your dose (up to the maximum 400 mg a day) provided that you do not have any liver or kidney problems.

Adults with severe kidney and liver problems

The usual dose is 100 mg a day.

Your doctor will review your treatment regularly to check that it is right for you.

If you take more Modafinil than you should

If you take too many tablets you may feel sick, restless, disorientated, confused or excited.

You may also have difficulty sleeping, diarrhoea, hallucinations (sensing things that are not real), chest pain, a change in the speed of your heart beat or an increase in blood pressure

Contact your nearest hospital casualty department or tell your doctor or pharmacist immediately. Take this leaflet and any remaining tablets with you.

If you forget to take Modafinil

If you forget to take your medicine take the next dose at the usual time, do not take a double dose to make up for the forgotten one.

If you have any further questions on the use of this medicine, ask your doctor or pharmacist.

4. Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them.

Stop taking this medicine and tell your doctor straight away if:

  • You have sudden difficulty breathing or wheeziness or your face, mouth or throat begins to swell.
  • You notice a skin rash or itching (especially if it affects your whole body). Severe rashes may cause blistering or peeling of the skin, ulcers in your mouth, eyes, nose or genitals.
    You may also have a high temperature (fever) and abnormal blood test results.
  • You feel any change in your mental health and wellbeing. The signs may include:
    • mood swings or abnormal thinking,
    • aggression or hostility,
    • forgetfulness or confusion,
    • feeling of extreme happiness,
    • over-excitement or hyperactivity,
    • anxiety or nervousness,
    • depression, suicidal thoughts or behaviour,
    • agitation or psychosis (a loss of contact with reality which may include delusions or sensing things that are not real), feeling detached or numb, or personality disorder.

Other side effects include the following:

Very common side effects (affecting more than 1 in 10 people):

  • Headache.

Common side effects (affecting fewer than 1 in 10 people):

  • Dizziness.
  • Sleepiness, extreme tiredness or difficulty sleeping (insomnia).
  • Awareness of your heart beat, which may be faster than normal.
  • Chest pain
  • Flushing.
  • Dry mouth.
  • Loss of appetite, feeling sick, stomach pain, indigestion, diarrhoea or constipation.
  • Weakness.
  • Numbness or tingling of the hands or feet ('pins and needles').
  • Blurred vision.
  • Abnormal blood test results showing how your liver is working (increased liver enzymes).

Uncommon side effects (affecting fewer than 1 in 100 people):

  • Back pain, neck pain, muscle pain, muscle weakness, leg cramps, joint pain, twitching or tremor.
  • Vertigo (spinning sensation).
  • Difficulty moving muscles smoothly or other movement problems, muscle tension, coordination problems.
  • Hayfever symptoms including itchy/runny nose or watery eyes.
  • Increased cough, asthma or shortness of breath.
  • Skin rash, acne or itchy skin.
  • Sweating.
  • Changes in blood pressure (high or low), abnormal heart trace (ECG), and irregular or unusually slow heart beat.
  • Difficulty swallowing, swollen tongue or mouth ulcers.
  • Excess wind, reflux (bringing back fluid from the stomach), increased appetite, weight changes, thirst or taste alteration.
  • Being sick (vomiting)
  • Migraine.
  • Speech problems.
  • Diabetes with increased blood sugar.
  • High blood cholesterol.
  • Swollen hands and feet.
  • Disrupted sleep or abnormal dreams,
  • Loss of sex drive.
  • Nose bleed, sore throat or inflamed nasal passages (sinusitis).
  • Abnormal vision or dry eyes.
  • Abnormal urine or more frequent urination.
  • Abnormal periods.
  • Abnormal blood test results showing that the numbers of your white blood cells have changed.

If you get any side effects, talk to your doctor or pharmacist. This includes any side effects not listed in this leaflet.

5. How to store Modafinil

Keep this medicine out of the sight and reach of children.

Use within 4 months after first opening the HDPE bottle.

This medicinal product does not require any special storage conditions.

Do not use this medicine after the expiry date which is stated on the label, carton and blister after EXP. The expiry date refers to the last date of that month.

Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw away medicines you no longer use. These measures will help protect the environment.

6. Contents of the pack and other information

What Modafinil contains

  • The active substance is modafinil
    Each tablet contains 100 mg of modafinil
    Each tablet contains 200 mg of modafinil
  • The other ingredients are lactose monohydrate, croscarmellose sodium, povidone (k-30), magnesium stearate.

What Modafinil look like and the contents of the pack

This medicinal product is presented as a Tablet

Modafinil 100 mg Tablets:

White to off-white, capsule shaped, uncoated tablets, debossed with '41' on one side and 'J' on the other side.

Modafinil 200 mg Tablets:

White to off-white, capsule shaped, uncoated tablets, debossed with '4' & '2' separated by score line on one side 'J' on other side.

The tablet can be divided into equal doses.

This medicinal product is available in

  • PVC/PVdC - Aluminium foil blister; Pack size of 1, 10, 20, 30, 50, 60, 90, 100, 120 and 500 tablets.
  • HDPE bottle with polypropylene closure containing silica gel desiccant; Pack sizes of 30 and 100 tablets.

Not all pack sizes may be marketed

Marketing Authorisation Holder

Milpharm Limited
Odyssey Business Park
West End Road
South Ruislip
United Kingdom


APL Swift Services (Malta) Limited
HF26, Hal Far Industrial Estate
Hal Far
BBG 3000


Milpharm Limited
Odyssey Business Park
West End Road
South Ruislip
United Kingdom

This leaflet was last approved in 04/2012.


Company contact details

Aurobindo Pharma - Milpharm Ltd.

Company image

Odyssey Business Park, Ares Block, West End Road, South Ruislip, Middlesex, HA4 6QD


+44 (0)208 845 8735

Customer Care direct line

+44 (0)208 845 8811


+ 44 (0)208 845 8811

Medical Information e-mail
Medical Information Fax

+44 (0)208 845 8795

Before you contact this company: often several companies will market medicines with the same active ingredient. Please check that this is the correct company before contacting them. Why?

Active ingredients


Legal categories

POM - Prescription Only Medicine

This site uses cookies. By continuing to browse the site you are agreeing to our policy on the use of cookies. Continue