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Composition
Content Reviewed By:
Dr. Sanjay Mehta
, (MBBS)
Written By:
Ms. Kavita Desai
, (B.Pharm)
Most side effects are temporary and disappear as your body adjusts to the medicine. Consult your doctor if they persist or cause concern.

Allergies and Skin Reactions
Contraindicated in severe hypersensitivitySerious allergic reactions, including severe skin reactions such as Stevens–Johnson syndrome, have been reported with modafinil, although they are rare.
MODALERT 100MG TABLET 10'S is a medication used to treat excessive sleepiness caused by certain conditions.
The active ingredient in MODALERT 100MG TABLET 10'S is Modafinil.
MODALERT 100MG TABLET 10'S is used to treat narcolepsy, obstructive sleep apnea, and shift work sleep disorder.
The recommended dosage of MODALERT 100MG TABLET 10'S for adults is typically 200mg once a day, usually taken in the morning, for the treatment of narcolepsy or obstructive sleep apnea. For the treatment of shift work sleep disorder, the medication should be taken one hour before the start of the shift.
The safety and efficacy of MODALERT 100MG TABLET 10'S have not been established for children under the age of 18, so it is not recommended for use in this population.
If a dose of MODALERT 100MG TABLET 10'S is missed, it should be taken as soon as remembered, unless it is close to the time for the next scheduled dose. In this case, the missed dose should be skipped and the regular dosing schedule should be resumed.
The potential side effects of MODALERT 100MG TABLET 10'S include headache, dizziness, nausea, dry mouth, nervousness, and in rare cases, more serious side effects such as an allergic reaction, hallucinations, or depression.
MODALERT 100MG TABLET 10'S may interact with other medications, so it is important to inform the healthcare professional of any other medications or supplements being taken.
MODALERT 100MG TABLET 10'S should not be taken by individuals who have a history of heart problems, high blood pressure, or liver or kidney disease. It should also not be taken by individuals who are pregnant or breastfeeding.
In most countries, MODALERT 100MG TABLET 10'S is a prescription-only medication and a healthcare professional must prescribe it.
Modalert 100mg may cause slight appetite suppression in some individuals, but weight loss is not a guaranteed side effect. If you notice significant changes in weight, consult your doctor.
While Modalert 100mg is used to improve wakefulness, its use for cognitive enhancement in healthy individuals for purposes like studying is not recommended without medical supervision.
Modalert 100 contains modafinil, a wakefulness‑promoting medicine. Doctors may prescribe it to help manage excessive daytime sleepiness associated with conditions such as narcolepsy, obstructive sleep apnea (as an add‑on to standard therapy), and shift work sleep disorder. It is not intended for normal tiredness or as a general performance enhancer and should only be used when a healthcare professional has diagnosed an appropriate condition.
The exact way Modalert 100 (modafinil) works is not fully understood. It is thought to act on certain brain chemicals (neurotransmitters), including dopamine and norepinephrine, in areas that regulate wakefulness and the sleep‑wake cycle. This leads to increased alertness and reduced tendency to fall asleep during the day in people with specific sleep disorders. It does not replace adequate sleep and should not be used to overcome sleep deprivation in healthy individuals.
Modafinil is processed mainly in the liver. In people with healthy liver function, it is generally well tolerated when used as prescribed. However, those with existing liver disease or impaired liver function may be at higher risk of side effects or increased drug levels. Dose adjustments are often required in moderate to severe liver impairment, and close medical monitoring is essential. Inform your doctor about any history of hepatitis, cirrhosis, fatty liver disease, or abnormal liver tests before starting Modalert 100. If you develop symptoms such as persistent nausea, dark urine, yellowing of the skin or eyes, or unusual fatigue, seek medical advice promptly.
Modafinil and its metabolites are eliminated through both the liver and kidneys. In mild to moderate kidney impairment, doctors may still consider Modalert 100 but will usually monitor more closely for side effects. In severe kidney disease, the use of modafinil requires particular caution, and alternative treatments may be preferred depending on the individual case. Always tell your doctor if you have chronic kidney disease, reduced kidney function, or are on dialysis. Do not start or continue Modalert 100 without specific medical guidance in these situations.
Safety data for modafinil use during pregnancy are limited, and some studies have raised concerns about a possible increased risk of birth defects. Because of this uncertainty, Modalert 100 is generally not recommended during pregnancy unless the potential benefit clearly outweighs the potential risk and no safer alternatives are available. Women who are pregnant, planning to become pregnant, or who could become pregnant should discuss all options with their doctor before using modafinil. Effective contraception is usually advised while taking Modalert 100 and for a period after stopping, as recommended by a healthcare professional.
Information on the excretion of modafinil into human breast milk and its effects on a nursing infant is limited. Because of the potential for adverse effects on the baby, Modalert 100 is generally not recommended during breastfeeding unless a doctor decides that the benefits to the mother outweigh the possible risks to the child. If modafinil use is considered essential, your doctor may advise monitoring the infant for irritability, poor feeding, or sleep disturbances, or may recommend using an alternative medicine or feeding method.
Although Modalert 100 is intended to improve wakefulness, it can also cause side effects such as dizziness, blurred vision, difficulty concentrating, or mood changes in some people. Until you know how the medicine affects you, you should avoid driving, operating heavy machinery, or performing tasks that require full alertness and coordination. If you still feel excessively sleepy despite treatment, or if you experience any side effects that impair your ability to react quickly, do not drive and contact your doctor for advice.
Combining Modalert 100 with alcohol is not recommended. Alcohol can interfere with sleep patterns, worsen underlying sleep disorders, and unpredictably interact with modafinil’s effects on the brain. Some people may experience increased dizziness, impaired judgment, or unusual mood or behavior changes when alcohol and modafinil are taken together. To reduce the risk of adverse effects and ensure the medicine works as intended, it is advisable to avoid or strictly limit alcohol while using Modalert 100 and to follow your doctor’s specific recommendations.
Serious allergic reactions, including severe skin reactions such as Stevens–Johnson syndrome, have been reported with modafinil, although they are rare. If you have a history of severe drug allergies, serious rashes, or hypersensitivity reactions, you must inform your doctor before starting Modalert 100. Seek immediate medical attention if you develop a rash, blistering, peeling skin, mouth sores, swelling of the face or tongue, difficulty breathing, or any other signs of an allergic reaction. Do not restart Modalert 100 if you have previously experienced a serious reaction to modafinil or related medicines unless a specialist explicitly advises otherwise.
Modalert 100 is approved for specific sleep‑related medical conditions and is not intended for use as a cognitive enhancer or to stay awake for long periods in otherwise healthy individuals. Using modafinil without medical need can increase the risk of side effects, dependence, sleep disruption, and mental health problems such as anxiety or mood changes. It may also mask underlying fatigue or illness that requires proper rest or medical evaluation. You should only use Modalert 100 if it has been prescribed for you by a healthcare professional after a thorough assessment.
Modalert 100 can interact with several medicines because it affects certain liver enzymes involved in drug metabolism. It may reduce the effectiveness of some hormonal contraceptives, including birth control pills, patches, and implants, increasing the risk of unintended pregnancy. Additional or alternative non‑hormonal contraception is usually recommended during treatment and for a period after stopping, as advised by your doctor. Modafinil can also interact with medicines such as certain antidepressants, anti‑seizure drugs, blood thinners, and others. Always provide your doctor and pharmacist with a complete list of all prescription medicines, over‑the‑counter products, and herbal supplements you use before starting Modalert 100.
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