Modafinil is a medicinal drug which significantly improves your alertness and wakefulness. It is a nootropic developed originally to treat narcolepsy, but in recent times, it is used as a eugeroic to reduce fatigue and increase positivity, productivity, motivation, and vigilance.

What Are Its Other Uses?

It is also highly effective in treating sleeping disorders and limiting appetite, thus helping in combatting obesity. It also works efficiently against cocaine, which is why it is used to encounter cocaine withdrawal symptoms.

How Does It Work?

It works by inhibiting dopamine transporter enzymes, and significantly increasing dopamine levels in the body, thus bringing about change.

Modafinil Side Effects

Modafinil is revered among its consumers for its lack of significant side effects, but as it is a prescribed medicinal drug, it may have some negative effects experienced by some patients and users.

Common Side Effects

You may experience the following complications at the beginning; however, these may disappear after some time. If these persist or become more bothersome, inform your doctor immediately:

  • Headaches
  • Dizziness
  • Respiratory tract infection
  • Nausea
  • Diarrhea
  • Nervousness
  • Anxiety
  • Agitation
  • Dry mouth
  • Rebound insomnia (which may subside as the dose becomes regular)
  • Indigestion

Modafinil Adverse Effects

The above-mentioned side effects are relatively common and do not necessarily require medical attention. But, if you experience the following severe side effects; you must immediately inform your doctor:

  • Fever
  • Easy bruising or bleeding
  • Hallucinations
  • Depression and anxiety
  • Chest pain
  • Irregular or pounding heartbeat
  • Mood changes such as confusion and suicidal thoughts.
  • Abnormally low blood pressure becomes persistent
  • Dyskinesia
  • High blood sugar
  • Loss of memory
  • Difficulty in urinating


It is strongly cautioned that Modafinil is prescribed to patients who have been evaluated for their sleep disorders.

Modafinil affects your central nervous system and may cause some people to feel drowsy. Hence, activities such as driving must be avoided.

Some patients with psychiatric history may experience more agitation and paranoia, which is why patients must share their entire medical history and conditions with their doctor.

If you use any steroidal contraceptives, the effectiveness may be reduced by using modafinil. Ask your doctor the most optimal dose considering your medical conditions, history, and prescribed medicines.

Now that you know the side effects, Modafinil should be used carefully and under the guidance of a doctor.

Due to its effective and efficient results, many people abuse the drug for even more enhancements. This makes them hyper alert and makes it difficult for them to sleep.

An extremely rare condition called Stevens-Johnson syndrome exists; sufferers can develop fatal rashes. The syndrome can be triggered by a variety of factors such as cocaine, psych-epileptics, and Modafinil.

You must take a few tests before using Modafinil to know how risky it is for you. Again, it has been agreed that the side effects of Modafinil are infrequent and have low cases, but some people can develop problems such as headaches. People who are migraine-prone can experience more frequent headaches. Beginners may feel nausea and nervousness, but that subsides as the dose become regular.