Buy modafinil online (Provigil) for narcolepsy sleep apnea and shift work disorder — a 200 mg morning tablet that lifts daytime alertness not energy. That distinction decides who it helps. The approval covers sleepiness caused by a diagnosed sleep disorder and nothing else. It raises the floor under wakefulness when that disorder keeps pulling the floor down. The dose behind the effect is smaller than most people expect.
| Name | Strength | Starting Price |
|---|---|---|
| Modafinil (generic Provigil) | 100 mg · 200 mg | From $0.24 per tablet |
Figure from the federal acquisition benchmark for the week effective 19 August 2026. It is a purchasing benchmark, not a pharmacy shelf price.
What this page covers
Modafinil Improves Wakefulness in Three Approved Uses
Three conditions carry an approval in adults. All three produce one complaint: excessive sleepiness during waking hours.
- Narcolepsy
- Obstructive sleep apnea, alongside treatment of the airway itself
- Shift work disorder
Modafinil uses outside those three are off label, and that line decides what a prescriber can put in writing. Behind the modafinil brand name Provigil sits a 1998 approval, and the label sits today with Cephalon, which manufactures for Teva. Adults who buy modafinil online in the United States almost always receive the generic. It has been sold since 2012, and it is the same molecule at the same two strengths for a very different price. Anyone treating one of these sleep and circadian disorders is choosing between those two versions.
The apnea wording is narrower than summaries suggest. Here the tablet is an addition to treatment of the obstruction, and it is never a substitute for it. Drop the airway device and keep the tablet, and a treated cause becomes a masked symptom.
Nothing in the approval reaches people who sleep normally. That is where most public interest sits. The prescribing information stays silent on it.
Dopamine Transport Is the One Confirmed Target
The prescribing information is unusually frank about the limits here. It states that the precise mechanism is unknown. What is documented is narrower and more useful. Modafinil binds two central targets directly: the transporters that recycle dopamine and norepinephrine. Blocking the dopamine transporter leaves more dopamine outside the cell, and wakefulness follows from there.
That sets it apart from amphetamines, though it does not make the medication harmless. This is a weak and selective transporter inhibitor, not a releasing agent. The rise it produces is shallow and slow. Whether that counts as a stimulant depends on the definition used. Regulators settled the practical version by scheduling it.
Half of Every Modafinil Tablet Clears Three Times Faster
Every tablet is a mirror-image pair. The molecule is a racemate, half R and half S. Those halves leave the body at different speeds. R has a half life around fifteen hours. S runs four to five. The label puts the ratio at roughly three to one.
This is why no two sources agree on duration. By the next morning the blood holds about ninety percent R and ten percent S. The tablet swallowed yesterday was an even split. What is left of it is not. Any single figure quoted for duration describes one half of a pair.
Peak levels arrive two to four hours after a dose. Food does not change how much is absorbed at all, which is unusual for a tablet of this kind. It delays the peak by roughly an hour. On a fixed shift schedule, that hour matters.
The R half also exists as its own prescription product, purified and approved in 2007. A single enantiomer was worth developing separately. That fact explains the racemate faster than any description of it.
Presence and effect are not the same thing. Wakefulness fades long before the slow half has cleared. An evening problem is not a sign that the morning dose was too small.
Modafinil Dosage Gains Nothing Above 200 mg a Day
Two hundred milligrams once daily is the entire recommended range. It is not a starting point on the way to something larger. Only the timing changes between the three approved uses.
| Condition | Dose | When it is taken |
|---|---|---|
| Narcolepsy | 200 mg once daily | Morning |
| Obstructive sleep apnea | 200 mg once daily | Morning, alongside airway treatment |
| Shift work disorder | 200 mg once daily | About one hour before the shift |
| Severe liver impairment | 100 mg once daily | Half the usual dose |
Doses as recommended in the current prescribing information for adults.
Higher amounts have been studied. Up to 400 mg a day is tolerated. The label is blunt about the result. There is no consistent evidence of benefit over 200 mg. No 400 mg tablet is made, so reaching that figure means taking two, and the second one adds side effects reliably and little else.
Late-day sleepiness has a studied answer, and it is not a bigger number. Across two randomized trials covering 56 patients, split regimens beat 200 mg taken once in the morning. The gain showed up in the late afternoon and evening. Total daily exposure was not the variable that moved. Distribution across the day was.
Two situations lower the dose before treatment starts. Severe liver impairment halves it. Older adults begin lower and are watched, because elimination may slow with age.
The modafinil 100 mg tablet and the modafinil 200 mg tablet are the only strengths made. Every regimen is some arrangement of those two. That choice carries a price consequence covered further down.
Buy Modafinil Online Where a Prescription Comes First
A prescription is required in all fifty states. It has to come from a licensed prescriber after a real evaluation. Pharmacies dispense it, and it has never sat on a shop shelf. Modafinil over the counter does not exist anywhere in the United States, in any strength.
How to get a modafinil prescription online has a straightforward legal answer. Federal telemedicine flexibilities allow a Schedule IV prescription without a prior in-person examination, and they currently run through 31 December 2026. The consultation still has to be genuine, and a qualifying diagnosis has to be on the record. Sleep history is the substance of that appointment, and a referral for a sleep study often follows it.
Where to buy modafinil online narrows quickly to licensed pharmacies, and the open question then becomes price. Three published figures describe the same box of thirty 200 mg tablets. They sit further apart than any other number on this page.
| Quantity of generic 200 mg | Federal benchmark | Discount card | Retail without insurance |
|---|---|---|---|
| 30 tablets | $10.45 | $22.10 – $32.33 | $905.14 |
| 90 tablets | $31.35 | Varies by fill | — |
Benchmark from the National Average Acquisition Cost file, week effective 19 August 2026. Card and retail figures are published SingleCare pricing for that same week.
Quantity is simple with a daily medication. Thirty tablets is a month and ninety is a quarter, with nothing in between to work out. The ninety count is where a benchmark and a counter price stop looking alike, since the multiplier applies to every tablet in the bottle.
What Imported Modafinil Tablets Really Contain
The legal route above is half of what a search returns. Pages that list modafinil for sale online without a prescription are not pharmacies in any regulated sense. Most ship from India, where the same molecule is made under names such as Modalert and Modvigil.
Those tablets usually do contain modafinil. That is not the weak point. Nothing verifies the contents of a given shipment, and no interaction check happens at any stage. Importing a scheduled medication for personal use is also not the settled gray area forum threads describe.
Threads argue endlessly about the best place to buy modafinil. The arithmetic rarely comes up. A month at the federal benchmark costs $10.45. Ordering it from an unlicensed seller saves nothing against that. It trades a pharmacy record for a package with no history.
Generic Modafinil and the Price Provigil Still Holds
Generic versions arrived in March 2012, fourteen years after the brand. Chemistry did not set that date. Four generic challengers had agreed in 2006 to wait until April 2012. The Federal Trade Commission sued over those agreements. A multistate case closed in 2016 for $125 million. The long wait was a legal outcome, not a scientific one.
| Product | Per tablet | 30 tablets | Package codes listed |
|---|---|---|---|
| Modafinil 200 mg | $0.34830 | $10.45 | 23 |
| Modafinil 100 mg | $0.24196 | $7.26 | 19 |
| Provigil 200 mg | $80.32600 | $2,409.78 | 2 |
| Provigil 100 mg | $53.15280 | $1,594.58 | 2 |
Federal acquisition benchmark, same weekly file.
Generic modafinil cost sits just under thirty-five cents for a 200 mg tablet, while the brand sits just over eighty dollars. Between them runs a multiple of 231 for identical milligrams.
The brand has not disappeared, and that is the stranger half. Both Provigil strengths appear in the benchmark every week of 2026. The price barely moves across the year. Behind each brand line sit two package codes. Behind the generics sit twenty-three and nineteen.
How much is modafinil without insurance depends on where the box is collected. Published retail runs to $905.14 for a month of the 200 mg strength. A discount card at the same counters brings that to $22.10. Between chains in one week the card price reaches $32.33. A GoodRx modafinil coupon and a SingleCare card work the same way. Neither is insurance, and both replace a cash price that few people actually pay.
A Scored 200 mg Tablet Beats Two 100 mg Tablets
These are acquisition benchmarks, not shelf prices. On that basis the modafinil price per pill runs against intuition. The 200 mg tablet costs $0.34830. The 100 mg tablet costs $0.24196. So the smaller one is not half the price. It is roughly seventy percent of the larger.
Per milligram the weaker tablet is 39 percent dearer. Half of a 200 mg tablet gives the same 100 mg for $0.17415. The label also describes the 200 mg tablet as scored. The 100 mg carries no score at all.
- 200 mg tablet — $0.001742 per milligram
- 100 mg tablet — $0.002420 per milligram
So the strength designed to be divided is also the cheaper route to a half dose. For anyone on the split regimen above, both facts point one way. Coupon pages do not surface it.
Schedule IV Allows Five Refills in Six Months
This has been a Schedule IV controlled substance since 27 January 1999. The practical meaning sits in one rule. A prescription may be refilled up to five times, and it expires six months from the date written, whichever limit arrives first.
Schedule IV is the fourth of five tiers. Classic prescription stimulants sit in the second, where refills are not permitted at all and a fresh prescription is needed every time. That contrast answers most questions about classification. The refill rule is identical whether you buy modafinil online or hand a paper prescription across a counter.
Supply worries come from the same place and mostly dissolve there. Aggregate production quotas from the DEA cover Schedules I and II only. No federal cap limits how much of this is made. It is also absent from the federal shortage database, checked on 28 August 2026. Local stock-outs do happen. A national shortage is not what causes them.
Dependence potential is real but modest. That is why the fourth tier and not the second. In fourteen days of observation after stopping, no specific withdrawal symptoms appeared, though sleepiness returned in narcoleptic patients. Standard workplace panels do not screen for this compound. Detection requires a test that looks for it specifically.
One interaction deserves more attention than it gets. The medication is a weak inducer of the CYP3A4 enzyme. Steroidal contraceptives become less reliable during treatment and for one month after the last tablet. Pills, patches, rings and implants are all affected. An additional method is needed across that whole window, which makes it a real consideration alongside hormonal therapy. The same enzyme effect lowers cyclosporine levels, which matters after a transplant.
Which Modafinil Side Effects Reach the Eye
Most modafinil side effects are unremarkable. One is neither, and it reaches the eye through the skin. Any new rash means stopping the tablet and being seen the same day, because the reaction that begins on an arm can end on a cornea.
In clinical trials, rash serious enough to end treatment reached about 0.8 percent in children under seventeen. That is thirteen cases in 1,585, including one possible case of Stevens-Johnson syndrome. Multi-organ reactions have appeared a median of thirteen days after the first dose, ranging from four to thirty-three. Angioedema and anaphylaxis have both been reported since marketing.
Stevens-Johnson syndrome is a skin reaction with an ocular half, and the two arrive together. The conjunctiva blisters while the skin does. Adhesions form between eyelid and globe if the acute phase goes unattended. The lasting damage is a scarred lid margin and an ocular surface that never holds tears again. An ophthalmologist assesses the eyes within days of the rash rather than after the skin settles.
Skin heals. A cornea scarred in those first weeks does not. Anyone who develops a rash on this tablet should treat it as an eye problem as well as a skin one and be seen the same week.
Everything else sits in ordinary territory. Trial figures against placebo show the scale.
| Reaction | On treatment | On placebo |
|---|---|---|
| Headache | 34% | 23% |
| Nausea | 11% | 3% |
| Nervousness | 7% | 3% |
| Anxiety | 5% | 1% |
| Insomnia | 5% | 1% |
| Dyspepsia | 5% | 4% |
| Dry mouth | 4% | 2% |
| Reduced appetite | 4% | 1% |
| Abnormal vision | 1% | 0% |
Adult clinical trial rates from the prescribing information.
Psychiatric reactions are the other category worth naming. Mania, delusions, hallucinations, aggression and suicidal thinking have all been reported. None is common, and most cases arose where a psychiatric history already existed.
Abnormal vision closes that table at one percent against none on placebo. It is transient and has nothing to do with the rash. One resolves on its own. The other is an emergency.
Why Was Modafinil Rejected for ADHD in 2006?
Because of that same rash. Modafinil for ADHD is prescribed off label today. It has never been approved for it.
It was tested thoroughly. The modafinil ADHD trials in children and adolescents were completed and submitted under the brand name Sparlon. In March 2006 an advisory committee voted twelve to one against approval. The reason was a single case of rash suggestive of Stevens-Johnson syndrome. A non-approvable letter followed that August. Rather than run the extra safety study, the sponsor closed the program.
Efficacy was never the objection. Evidence exists, approval does not, and a skin reaction is the reason.
Appetite Drops Before the Scale Ever Moves
Reduced appetite appears on the label at four percent against one on placebo. It is a side effect, not a purpose.
A controlled laboratory study gave single doses to eleven healthy adults. Food consumed and total energy intake both fell. Proportions of protein, fat and carbohydrate stayed the same. The effect was on how much was eaten, not on what. At the dose that reduced intake, heart rate did not rise significantly.
That is easy to over-read. Eleven people, single doses, one laboratory. It measured eating rather than weight, and no trial has shown sustained weight loss. Weight gain is the rarer complaint, and it occurs where sleeping and eating shift together.
How the Liver Sets the Modafinil Dose
Severe hepatic impairment halves the dose. The label states it without qualification. Clearance happens in the liver, so reduced function means the same tablet gives higher exposure for longer. This is a dosing instruction, not a warning.
The combination with alcohol has not been studied, and the label advises avoiding it on that basis. That is a statement about missing evidence rather than about a known danger. Existing liver disease changes that calculation. Knowing liver function before starting is worth more than any rule about drinks.
Medical Disclaimer
This page is educational and does not replace individual medical care. Modafinil requires a prescription in the United States. The right dose depends on the diagnosis, on liver function and on age. Hormonal contraception needs separate planning during treatment and for a month afterward. Talk to your doctor or pharmacist before starting, stopping or changing any treatment, and seek care the same day for any new rash.