Provigil (Modafinil) Tablets: 100 mg and 200 mg

When you compare Provigil against other wakefulness-promoting options, the first thing worth noticing is that it is the original brand-name modafinil tablet, supplied in two clearly defined strengths - 100 mg and 200 mg - across pack sizes that run from 30 up to 360 tablets. That range matters in practice: once your prescriber has settled on a daily dose, you can select the pack size that matches months rather than weeks of therapy instead of repeatedly reordering a smaller quantity. For anyone weighing up modafinil brands in our catalogue, that combination of a fixed-strength tablet and a wide span of pack sizes is the practical difference that shapes how straightforward your ongoing supply will be.

What Provigil is, and how modafinil's role differs from other wakefulness medicines

Provigil is an oral tablet containing modafinil, a wakefulness-promoting agent classified under ATC code N06BA07. Modafinil tablets are established for treating excessive daytime sleepiness associated with narcolepsy in adults, a role that sits apart from general stimulant medicines such as methylphenidate, which work through broader, more direct central nervous system stimulation. Modafinil's effect is comparatively selective: it promotes wakefulness without usually producing the sharp peaks and troughs in alertness associated with some classic stimulants. That distinction is one reason clinicians may consider modafinil tablets specifically for narcolepsy-related sleepiness rather than reaching for a broader stimulant class, and it is why Provigil has held a distinct place in sleep medicine for many years.

Who typically considers modafinil tablets like Provigil?

Modafinil tablets are not a general tiredness remedy, and deciding whether Provigil is right for you starts with recognising who the medicine is actually established for. In clinical practice, modafinil is typically considered by:

• Adults who have received a formal diagnosis of narcolepsy from a sleep specialist or neurologist.
• Adults already managing narcolepsy who want a tablet form that lets them plan a consistent daily routine.
• Patients whose prescriber has reviewed their full medical history, including cardiovascular and psychiatric health, before confirming that modafinil is appropriate.

Provigil is not intended for children or adolescents under 18, for occasional tiredness, or as a substitute for addressing an underlying sleep disorder that has not been properly assessed.

How modafinil works, and what that means in daily life

The precise mechanism behind modafinil's wakefulness-promoting effect is not completely understood. It inhibits the dopamine transporter and affects several signalling systems involved in wakefulness, potentially including histamine and orexin pathways. In practical terms, its effect is often experienced as sustained daytime wakefulness rather than a brief surge in stimulation. A prescribed morning dose can support alertness across much of a typical day, although some patients are advised to divide their daily dose. For someone living with narcolepsy, treatment may provide a more reliable stretch of daytime alertness, but modafinil does not cure the underlying condition or necessarily eliminate every symptom. Cataplexy, for example, may need separate clinical management.

How should you take Provigil, and how do you build a routine around it?

Modafinil is commonly prescribed at a total dose of 200 mg a day, either as one morning dose or divided between the morning and noon. Some patients may be given a different regimen according to their response and clinical circumstances. Taking it later in the day can increase the likelihood of difficulty sleeping at night. Provigil tablets can be taken with or without food, although food may delay absorption without reducing the overall amount absorbed. Your prescriber will set the exact daily dose and may adjust it after reviewing how you respond; we do not set or alter dosing ourselves, as that remains a clinical decision between you and your doctor.

A few practical habits help most people settle into a workable routine:

• Take each dose at a consistent time so its effect fits predictably into your day.
• Avoid taking a dose in the afternoon or evening unless your prescriber has specifically advised otherwise.
• If you forget a dose, do not double the next dose. Follow the patient information leaflet or ask your prescriber or pharmacist what to do, particularly if it is already late in the day.
• Keep track of how alert you feel at the times you most need to drive, work, or concentrate, and mention any gaps to your prescriber at review.

Strengths and pack sizes we offer

We list Provigil as oral tablets in two strengths, 100 mg and 200 mg, each available in pack sizes of 30, 60, 90, 120, 180, 270, and 360 tablets. That spread lets you match the pack to your prescribed daily dose and to how far ahead you want to plan your supply, whether you are confirming that modafinil suits you with a smaller pack or settling into a longer-term routine with a larger one.

• 100 mg tablets - available in packs of 30, 60, 90, 120, 180, 270, or 360.
• 200 mg tablets - available in packs of 30, 60, 90, 120, 180, 270, or 360.

Current prices for each strength and pack size are shown in pounds sterling at checkout, where you can compare the options side by side before confirming an order.

When does Provigil start working, and how long does its effect last?

Many people begin to notice modafinil's wakefulness-promoting effect within about an hour of taking a tablet, with peak blood concentrations generally reached after roughly two to four hours when it is taken without food. Modafinil has a relatively long half-life of around 15 hours, which helps it support wakefulness across much of the day but also explains why a dose taken too late may disturb sleep. It can take a few days of consistent dosing to reach steady levels, so your response is normally reviewed over time rather than judged from a single tablet.

Safety priorities before you start

Before starting modafinil, it is worth checking several things with your prescriber or pharmacist, and we have set these out as a short checklist you can work through:

Beyond those checks, a few safety points are worth holding onto throughout treatment. Modafinil is contraindicated for anyone with known hypersensitivity to modafinil or an excipient in the tablet. It is also contraindicated in people with uncontrolled moderate-to-severe hypertension or cardiac arrhythmias. Prescribers therefore assess cardiovascular history and may arrange relevant checks before and during treatment.

Modafinil should not be used during pregnancy because evidence suggests that exposure may increase the risk of congenital malformations. It is also not recommended during breastfeeding, since a risk to a breastfed infant cannot be excluded, and it is not recommended for anyone under 18 because of safety and efficacy concerns, including serious skin and psychiatric reactions reported in paediatric studies. Because modafinil can cause dizziness or blurred vision, and because it does not guarantee that wakefulness returns fully to normal for every patient, do not drive or operate machinery until you know how the medicine affects you and your underlying sleepiness is adequately controlled.

Common side effects to expect

• Headache, which is the most frequently reported effect.
• Nausea or a dry mouth.
• Nervousness, anxiety, or difficulty sleeping, particularly if a dose is taken too late in the day.
• Dizziness.

These effects may be mild and can ease as treatment continues, but severe or persistent symptoms need medical advice. Stop taking modafinil and seek urgent medical help if you develop a rash, blistering or peeling skin, mouth ulcers, facial swelling, breathing difficulty, or another sign of a serious allergic or skin reaction. New severe anxiety, agitation, depression, suicidal thoughts, hallucinations, mania, or unusual behaviour also requires prompt medical assessment.

Interactions and practical precautions

Modafinil affects liver enzymes that handle many other medicines, which means it can alter how well some treatments work. The interactions that matter most in everyday life include:

• Hormonal contraceptives - modafinil can reduce the effectiveness of contraceptive pills, implants, patches, vaginal rings, and some other hormonal methods. Effective alternative or additional contraception is required during treatment and for two months after stopping modafinil; ask a doctor or contraception specialist which method is suitable.
• Other medicines processed through interacting liver enzymes, including certain anti-epileptic medicines, some antidepressants, ciclosporin, and warfarin. Closer monitoring or a dose adjustment may be needed.
• Other stimulant or wakefulness-promoting medicines, where combined effects may increase the risk of overstimulation, raised blood pressure, or a fast heart rate.
• Alcohol, whose effects may be less predictable when combined with modafinil and the underlying sleep disorder.

Blood pressure and heart rate should be checked regularly during treatment, and an electrocardiogram may be considered before treatment according to the prescriber's assessment. Always tell your prescriber about every medicine, supplement, and contraceptive you use before starting Provigil, and mention modafinil to any new prescriber or pharmacist afterwards.

Provigil, Nuvigil, and Sunosi: how do the options differ?

When people compare modafinil with other wakefulness-promoting options, two relevant alternatives are armodafinil and solriamfetol. Their active ingredients, mechanisms, approved uses, dosing, interactions, and availability differ, so changing treatment requires a prescriber's assessment rather than a direct tablet-for-tablet substitution.

Armodafinil, sold under brand names such as Nuvigil, is the isolated R-enantiomer of modafinil. It is a single enantiomer rather than the racemic mixture found in Provigil and can maintain higher concentrations later in the day, although individual response and the prescribed regimen vary. The two medicines have similar overall effects and share important cautions concerning pregnancy, contraception, breastfeeding, driving, skin reactions, and psychiatric symptoms. If you specifically want an armodafinil-based tablet from our catalogue rather than the brand compared above, we list Artvigil as our armodafinil option.

Solriamfetol, sold under the brand name Sunosi, works differently: it acts as a dopamine and noradrenaline reuptake inhibitor. It is licensed for excessive sleepiness associated with narcolepsy and for residual excessive sleepiness associated with obstructive sleep apnoea when primary treatment of the airway obstruction has not satisfactorily treated that sleepiness. This gives it a different range of licensed uses from Provigil, but it is a chemically distinct medicine with its own side-effect and interaction profile, including potentially important increases in blood pressure and heart rate. Provigil's longer clinical history and its established UK role specifically for narcolepsy are factors a prescriber may weigh against solriamfetol's different mechanism and indications. If you would prefer a different modafinil brand rather than a different active ingredient altogether, we also list Modalert, which supplies the same active ingredient as Provigil under an alternative brand.

Is Provigil available on prescription in the UK, and what do we require to order?

Modafinil is authorised for human medicinal use in the United Kingdom, and modafinil tablets are classified there as a prescription-only medicine. That classification describes the dosage form itself, not any particular pack or strength we list. Separately, our ordering process does not require you to submit a prescription before we accept your order, so you can order Provigil through our checkout without a prescription. We still encourage you to discuss modafinil with a doctor before starting it, given the checks around pregnancy, contraception, cardiovascular health, psychiatric history, and interacting medicines described above, even though our ordering step itself does not require that paperwork.

Ordering, delivery, and receiving your Provigil tablets

MedicalBrandNames has operated since 2017, and we list Provigil alongside other branded medicines. Our customer-support team is available around the clock by email, online chat, and phone, with a pharmacist on hand to answer questions about modafinil or another product before or after you order. Once you have chosen your strength and pack size, every price is shown in pounds sterling at checkout, so you can see the total cost before confirming.

After an order is placed, we pack it discreetly and arrange delivery to addresses across the UK, with tracked delivery options and an estimated delivery window shown at checkout so you know roughly when to expect your tablets. When your pack arrives, store it between 20°C and 25°C, with excursions between 15°C and 30°C permitted, and keep it in its original, tightly closed container away from moisture.

Making your decision

If you have reached this point because you already know modafinil suits you, the decision usually comes down to strength and pack size rather than whether to choose Provigil at all: select the 100 mg or 200 mg tablet your prescriber has confirmed and the pack size that matches how far ahead you want your supply to run. If you are still weighing modafinil against armodafinil or solriamfetol, the comparisons above show that the differences lie in active-ingredient composition, mechanism, licensed indications, duration profile, and safety considerations rather than in any one option being universally superior. Either way, a conversation with your doctor about your medical history and other medicines remains the right starting point, and our support team is available whenever you are ready to place an order.