modafinil dosage

Modafinil: user guide and dosage

Modafinil may be a very useful cognitive enhancer. It enhances the productivity, improves the cognitive functions, and people with analytic tasks really like this drug. Due to Modafinil, it is easier to analyze information, remember it and process in the head.

Complex projects will seem you simple after the use of Modafinil.

If you have any disorder of the mental process or a pathological drowsiness, it is simple to select a working dosage. It is enough to consult a doctor, and a doctor will prescribe a prescription. If you are going to use Modafinil to stimulate the cognitive functions, a physician is not able to give you a prescription because this is an alternative area of the Modafinil administration.

Buying medication online, most people face an issue that they do not know what dose to select in order to have an effective and safe therapy. There is a lot of information about this on the internet, but all magazines and informative resources give the subjective estimation. But only real studies and user experience that give good recommendations should be guided during a choice of the Modafinil dosage.

We have prepared for you the most topical user guide and tell you how to correctly select a dose, if you do not have a prescription.

Where to find Modafinil?

For one thing, it is not easy to find a reliable vendor of Modafinil now. There are many local sellers in the internet who work only in one country and are specialized in one market segment. As a rule, the prices are higher compared to the international suppliers because they are the secondhand dealers.

Big shops of Modafinil online offer the international shipping to all countries and lower prices. So, it is safer and cost-efficient to order the tablets in these shops. The proved logistics system guarantees that your package will not be confiscated by the customs, and you will receive your goods.

Having analyzed the market, we can distinguish several companies including “Canadian Pharmacy Online”. According to the reviews, it is a rather large and safe supplier. There is a big choice of medications with Modafinil ingredient on the site, and the prices are affordable.

As soon as you decide on the online shop and to buy Modafinil, it is time to think over reading the instruction for the use.

How to choose Modafinil correctly?

How to choose Modafinil correctly?If you have just started to look for Modafinil online, you probably will be surprised when you find out that there are two types of this drug: Modafinil and Armodafinil. They have the identical pharmacological properties but the clinical effect may differ. The difference between Modafinil and Armodafinil consists in the chemical composition:

  • Modafinil has two R- and S-enantiomers in equal proportions.
  • Armodafinil has just R-enantiomer, that has an impact on the pharmacological action.

So, due to the structural changes, Armodafinil binds to the receptors differently in the brain tissues and nervous system, and the drug has some advantages:

  1. Armodafinil acts softly and for a shorter period. It may be very convenient, if the peak of your activity falls to the morning, and there is no need to be energetic within 12 hours.
  2. Modafinil better beats drowsiness, a person is not sleepy after the use of the tablet within a long period. Armodafinil, on the contrary, acts by means of the energy increase. In fact, the effect is the same but the mechanism of the achievement of this effect is different.

It is believed that due to the changed molecular formula, Armodafinil works stronger than Modafinil. There are clinical evidences to this fact, and so to achieve the therapeutic effect it is enough to take just 150 mg Armodafinil. Taking Modafinil, the equal effect will be achieved only during the use of 200 mg. Therefore, the dosage of these drugs will be completely different.

In what dosage range is Modafinil and Armodafinil taken?

It is believed that a minimal single dosage of Modafinil is just 50 mg. This dose is enough to achieve the maximum control over the cognitive functions. But you will definitely feel a burst of the energy and power.

The optimal dosage of Modafinil is considered 200 mg. This is the dose that enhances a sensitivity of the nerve receptors, improves the blood circulation in the brain, and improves the cognitive abilities.

It is believed that Modafinil may be taken in the dose of 400 mg a day. This is the maximal dosage that is divided into two parts, and 200 mg is taken every 12 hours. This dosage helps to cope with the drowsiness and gives the maximal stimulation of the brain activity. But do not take it for long, not more than 3 days at a run.

Taking Armodafinil, the same situation is observed.

  • A minimal dosage is 50 mg a day.
  • The optimal dosage is 150 mg Armodafinil.
  • The maximal dosage is 300 mg Armodafinil within 24 hours.

Keep in mind that every diagnosis needs a selection of the personal dosage depending on the body mass, age and a psychological health of a patient.

Modafinil dosage during ADHD

To treat ADHD, the maximal dose of Modafinil is not needed. It is enough to take 200 mg every day or in a day. Taking the tablets once in two days, a risk of the adverse effects is reduced, and the treatment is successful.

The emotional state and cognitive functions are controlled during the treatment. Also, due to the stimulation of some important neural networks in the brain, a human with the ADHD shows the social activity. But you should know that Modafinil can be taken only by adult patients at the age of over 21 during the ADHD.

Modafinil during narcolepsy: dosage and scheme of the treatment

Narcolepsy is an acute pathological state of drowsiness. Unlike the ADHD, a higher dose of Modafinil is needed to treat the narcolepsy in order to have an active action on the brain. The dose of Modafinil is 400 mg a day within the first three days, and then 200 mg a day during the narcolepsy.

The tablets should be taken every day. If the treatment has led to good results, it is necessary to refuse from the treatment gradually. It is preferred to go to 50 mg, and then cancel Modafinil use in a week.

In what dose to take Modafinil to improve the cognitive functions?

If you want to improve the cognitive functions, we recommend you two working schemes for the short-term or long-term improvement. If you need to quickly improve the memory, attention, and concentration, it is recommended to take Modafinil in a high dose of 400 mg a day, or Armodafinil in the dose of 300 mg a day. Take the first pill in the morning after awakening, and the second pill in 12 hours.

What is this scheme for?

This is the least safe scheme when the adverse effects often happen (headache, and drowsiness). So, Modafinil and Armodafinil may be taken this way for not more than 3-4 days. You will not be sleepy or tired. And your brain will work by 10 times better than usually. Students really like this effect before the exams, analysts use this effect before preparing and creating the reports, and others. It means that we get the highest outcome from the brain.

The second working scheme is long-term. If you want to increase the basic rates of the cognitive functions and keep the effect for many years, you may take Modafinil and Armodafinil in the minimal or middle dosage.

Start taking the pills from the dose of 200 mg a day (150 mg if Armodafinil). Take the drug in the morning, and you should have a good sleep – at least 8 hours. Your brain needs a rest, and it can be achieved only while sleeping.

Do not take Modafinil 6 hours before sleeping, because you will have insomnia!

Modafinil may be taken within 28 days this way, and then take a break. A prolonged scheme has its own advantages:

  • Rare adverse effects;
  • The effect is kept longer;
  • A conductivity of the blood vessels is improved in the brain.

But if you need the effect as soon as possible, and you want to get the maximal outcome within 2-3 days, this scheme will not do. If you take the drug for the first time, the second option will do. If the high doses of Modafinil are taken at once, it may induce severe adverse effects. The body needs time to get used to the action of the pills.

Possible adverse effects of Modafinil

It has been clinically proved that the adverse effects of Modafinil depends on a daily dose. The higher the dose is, the severer the adverse effects are. These are often headaches, insomnia, dyspepsia, and thirst.

But in case of the overdose, you will have an allergic reaction. If it happened, stop taking Modafinil and go to a doctor.

In order to minimize the risks from the use of Modafinil, you should follow the recommendations:

  • Take enough water (at least 2,5 liter a day);
  • Take a vacation from the mental activity;
  • Sleep at least 8 hours;
  • Avoid strong tea, coffee, and other stimulators of the central nervous system during the use of Modafinil. If you are taking Modafinil, do not consume alcohol.

What to do if I do not know what dose of Modafinil works for me?

If you found a safe online shop of Modafinil but you cannot make a choice, contact a customer support. You can consult a representative of the online pharmacy and get a comprehensive answer to all your questions. Buying Modafinil online, a prescription is not asked for, and therefore you can talk to a representative of the vendor-company.

Choose the lowest dose for the first time. As soon as you get the experience and find out how your body reacts to the action of Modafinil, you will be able to increase the daily dose. Also, you can contact the experienced users who have taken Modafinil and know how it works. There are many forums where many people will reply to your request and give you good recommendations.


It does not matter what drug you choose – Modafinil or Armodafinil. It is important what dose you will take. Do not chase after the maximal effects. Wait for a while till your body gets used to the action of the pills, and the central nervous system will be ready to the intensive stimulation. So, start the treatment from the minimal doses and gradually increase the working dose till the maximum rate.

  1. Christian Guilleminault, Michelle T. Cao, in Principles and Practice of Sleep Medicine (Fifth Edition), 2011
  2. Richard B. Berry MD, in Fundamentals of Sleep Medicine, 2012 «Chapter 24 – Hypersomnias of Central Origin»
  3. The NHMRC Centres of Research Excellence, Modafinil/armodafinil in obstructive sleep apnoea: a systematic review and meta-analysis.
  4. Adis International Limited, Auckland, New Zealand, «Modafinil: a review of its use in excessive sleepiness associated with obstructive sleep apnoea/hypopnoea syndrome and shift work sleep disorder.»