Backup contraception is the first Provigil sentence
Orbit · modafinil (Provigil 100 mg). CYP and rash desk at Laugavegur 28 - not a student stimulant counter.
Modafinil induces CYP3A4 and can lower ethinyl estradiol. Labels ask for effective backup or an alternative method during therapy and for one month after stop. Urine pregnancy tests before start in reproductive-age patients are chart hygiene.
The Caelum lock is generic modafinil 100 mg, thirty tablets. Two-hundred-milligram tablets are another NDC. Schedule IV in the United States. This is not an over-the-counter focus aid.
If shift timing is the question, the wake orbit is the clock. The shift trace carries the pill backup. This page is the interaction grid.
Cyclosporine, some azoles, and other CYP3A4 cargo move when a wake tablet starts
Induction can lower other CYP3A4 substrates. Narrow-index drugs deserve a pharmacist pass the week modafinil starts, not the month a level drifts.
Strong inhibitors can raise modafinil. Name them. Do not treat a new azole as unrelated because the indication is a nail.
Armodafinil shares the contraception conversation. See armodafinil for the R-enantiomer curve. Modalert literacy is here.
Modafinil interaction board
Partner
Issue
Desk move
Ethinyl estradiol / some hormonal contraception
Lower exposure
Backup x therapy + 1 month
Other CYP3A4 substrates
Lower levels possible
Pharmacist pass
Caffeine / energy drinks
Tachycardia, insomnia
Cap the stack
Alcohol / sleep debt
False wake
Does not replace sleep
Backup contraception is a month-after story, not a first-week story only
Induction can lower ethinyl estradiol. Backup during therapy and for one month after the last tablet. Document it the day 100 mg starts.
Other CYP3A4 substrates can fall. Cyclosporine and other narrow-index drugs deserve a pharmacist pass the week a wake tablet starts.
Strong inhibitors can raise modafinil. A new oral azole is not unrelated because the indication is a nail.
Serious rash including SJS is a stop. Do not finish a shift pack. Rechallenge after true drug rash is usually off the table.
OSA labeling assumes CPAP or equivalent stays on. Dusty masks plus 100 mg are a cardiovascular cocktail, not a convenience.
Schedule IV. Sharing before exams is diversion. Academic pressure is not a labeled indication.
Half-life near fifteen hours punishes 16:00 swallows. Shift maps dose about an hour before the shift.
Caffeine stacks cause tachycardia and a normal ECG. Simplify first.
400 mg daily is a labeled maximum path for some indications, usually split, not four 100 mg tablets because a forum said so.
Modafinil start-week board
Start-week task
Done?
Backup contraception
Written
CPAP still on
Yes or not OSA
Rash plan
Photo + stop
Caffeine cap
Named
Backup contraception is a month-after story, not only a first-week story
Induction can lower ethinyl estradiol. Backup during therapy and for one month after the last tablet. Document it the day 100 mg starts.
Other CYP3A4 substrates can fall. Cyclosporine deserves a pharmacist pass the week a wake tablet starts.
Strong inhibitors can raise modafinil. A new oral azole is not unrelated.
Serious rash including SJS is a stop. Do not finish a shift pack.
OSA labeling assumes CPAP stays on. Dusty masks plus 100 mg are a cardiovascular cocktail.
Other CYP3A4 substrates can fall. Cyclosporine deserves a pharmacist p
Schedule IV. Sharing before exams is diversion. Academic pressure is not a labeled indication.
Half-life near fifteen hours punishes 16:00 swallows. Shift maps dose about an hour before the shift.
Caffeine stacks cause tachycardia and a normal ECG. Simplify first.
400 mg daily is a labeled maximum path for some indications, usually split, not four 100 mg tablets from a forum.
Days off are for sleep, not leftover 100 mg. Recovery-day doses invite insomnia.
Caffeine stacks cause tachycardia and a normal ECG. Simplify first.
400 mg daily is a labeled maximum path for some indications, usually split, not four 100 mg tablets from a forum.
Days off are for sleep, not leftover 100 mg. Recovery-day doses invite insomnia.
One-hundred-milligram thirties are the Provigil cash row
The Caelum lock is generic modafinil 100 mg x 30. GoodRx has published that board. Two-hundred-milligram thirties are another NDC. Schedule IV. Caelum does not dispense.
GoodRx average retail$662.23
GoodRx coupon print$24.05
Generic modafinil 100 mg x 30, GoodRx Provigil table, 23 June 2026.
Generic modafinil 100 mg, thirty tablets, the Caelum Provigil orbit, 21 August 2026. GoodRx lists 100 mg x 30 at $662.23 / $24.05 (23 June 2026). Two-hundred-milligram tablets are another NDC. Schedule IV. Caelum does not dispense.
A 16:00 swallow steals Tuesday more than it saves a late shift
Half-life near fifteen hours punishes late tablets. Shift-work maps dose about an hour before the shift, then protect the recovery sleep.
Caffeine culture in Reykjavik winter plus 100 mg sends people in with sinus tachycardia and a normal ECG. Simplify the stack first.
Personal milligram climbs stay with the sleep clinician who has ESS scores and a BP cuff.
Modafinil chips
LockProvigil 100 mg x 30
PillBackup during + 1 month
StopSerious rash
NotCPAP replacement
A wake tablet does not stent an airway, and a rash does not wait for Monday
OSA residual sleepiness labeling assumes the primary therapy is still on. Dusty CPAP plus 100 mg is not a plan.
Narcolepsy and shift-work sleep disorder are the other labeled frames. Academic pressure is none of them. Sharing tablets is diversion.
Psychiatric warnings exist. Anxiety, mania, and ideation need a same-week call. Blood pressure can rise. Log it on shift starts.
ADME orbit card
Absorption
Oral Tmax about two to four hours; food may delay.
Distribution
CNS wake circuits; not an amphetamine twin, still scheduled.
Metabolism
CYP3A4 induction is the contraception hinge; other pathways contribute.
Excretion
Half-life near fifteen hours; afternoon doses steal the next night.
Fourteen days off one-hundred milligrams is not yet a month of backup
Keep non-hormonal backup until a month after the last tablet unless the clinician wrote a different method. Two weeks is not the month. Combined-pill users who treat day fourteen as clearance invent a pregnancy the label tried to prevent. The Provigil 100 lock does not shorten that clock.
Cyclosporine plus the first week of Provigil 100 on nights is a transplant-team call before levels drift. Induction can cut the trough. Do not treat a falling level as leftover sleepiness and raise 100 mg. See how orlistat handled a trough - different enzyme, same 'do not raise the wrong drug' rule.
Four 100 mg tablets through a 20-hour shift is not a studied split. Late fractions steal recovery sleep. People who invent q4h from a 100 mg bottle treat the lock as Lego. Ask for a labeled map. Do not steal tomorrow to finish tonight.
Twelve unused CPAP nights plus possible mornings is residual sleepiness without primary therapy. Fix the mask. Wake-agent labeling assumes the primary therapy is in place. A prettier 100 mg week with a dusty hose is not a clearance.
Two tablets given to a cousin before exams is diversion. Do not repeat it. Schedule status and the psychiatric-warning still travel with the gift. Modalert remains import literacy without a brand dollar. Armodafinil conversions remain not 1:1.
Peer-pass starts with the pill backup. Rash or ideation: 112. Reviewed 21 August 2026. Sources stay Provigil labeling. Educational only. Ingrid does not prescribe wake agents by thread.
Alcohol the same evening as 100 mg is a stacked judgment story even when the tablet was swallowed at 06:00. The night still counts. Confirm with the clinician if a rash already started.
A new azole or other interacting week deserves a named clinician. Do not assume 100 mg is too small to induce or to be induced.
Icelandic holiday weeks empty 100 mg bottles and people invent every-other-day maps that wreck both sleep and backup math. Call for a bridge. Do not share with a cousin who has an exam.
If the indication was shift-work disorder, write the shift clock on the bag. A locum who thinks every 100 mg is narcolepsy will mishandle a 14:00 swallow.
Days off are for sleep, not leftover 100 mg
Taking modafinil on a recovery day invites insomnia and next-day fog. Rotating maps need a clinician, not a blister used as a calendar.
Modalert is import literacy. Artvigil/armodafinil is a different enantiomer. Do not mix leftovers.
Laugavegur peer-pass starts with the pill backup, not with ESS folklore.
Sources stay Provigil labeling. Exam-hack blogs do not enter the chart.
Backup contraception lasts a month after the last one-hundred-milligram tablet
Modafinil induces CYP3A4 and can lower ethinyl estradiol. Backup during therapy and for one month after the last tablet. Two weeks after stop is not the month. Document backup the day 100 mg starts. Urine pregnancy tests before start in reproductive-age patients are chart hygiene.
Other CYP3A4 substrates can fall. Transplant cyclosporine plus new Provigil 100 for nights is a pharmacist-and-transplant-team week, not a roster surprise. This desk does not adjust immunosuppressants.
Strong inhibitors can raise modafinil. Itraconazole for nails the same week as night shifts is a both-prescribers question. Do not stack extra caffeine to test it.
Serious rash including Stevens-Johnson syndrome is a stop. Do not finish a shift pack. Rechallenge after true drug rash is usually off the table. Photograph the eruption.
OSA labeling assumes CPAP or equivalent stays on. Dusty masks plus 100 mg are a cardiovascular cocktail. Twelve unused mask nights with possible mornings is residual sleepiness without primary therapy.
Schedule IV. Sharing two 100 mg tablets with a student cousin before exams is diversion. Academic pressure is not a labeled indication.
Half-life near fifteen hours punishes 16:00 swallows and invented q4h 100 mg splits through a 20-hour shift. Late fractions steal recovery sleep. Shift maps dose about an hour before the shift, then protect days off.
Caffeine culture plus 100 mg sends people in with tachycardia and a normal ECG. Simplify the stack first.
Four hundred milligrams daily is a labeled maximum path for some indications, usually split 200 plus 200 when 200 fails - not four 100 mg tablets because a forum said so.
Psychiatric warnings: anxiety, mania, ideation. Old bipolar charts are a specialist gate. Occupational health wanting a wake tablet does not outrank psychiatry.
Blood pressure can rise. Log it on shift starts.
Positive tests need obstetrics and a stop plan. Rosters do not outrank that. Contraception backup during use does not replace a skipped preconception visit.
Modalert is import literacy. Armodafinil is a different enantiomer. Do not mix leftovers.
Peer-pass starts with the pill backup, not ESS folklore. Ingrid does not prescribe wake agents by thread.
Sources stay Provigil labeling. Spreading rash or suicidal ideation: 112. Reviewed 21 August 2026.
Modafinil induces CYP3A4 and can lower ethinyl estradiol. Backup during therapy and for on
Other CYP3A4 substrates can fall. Transplant cyclosporine plus new Provigil 100 for nights
Strong inhibitors can raise modafinil. Itraconazole for nails the same week as night shift
Serious rash including Stevens-Johnson syndrome is a stop. Do not finish a shift pack. Rec
Strong inhibitors can raise modafinil. A new oral azole is not unrelat
Psychiatric warnings: anxiety, mania, ideation - same-week call. Old bipolar charts are a specialist gate.
Blood pressure can rise. Log it on shift starts.
Modalert is import literacy. Armodafinil is a different enantiomer. Do not mix leftovers.
Positive pregnancy tests need obstetrics and a stop plan. Rosters do not outrank that.
Peer-pass starts with the pill backup. Sources stay Provigil labeling.
modafinil notebook
Item
Note
Psychiatric warnings: anxiety, mania, id
chart
Blood pressure can rise. Log it on shift
till
Seal the modafinil interaction orbit
Contraception backup, rash stops, and CPAP honesty outrank exam folklore. 100 mg is a lock strength on a scheduled wake agent.
Modafinil contraception and rash thread at Laugavegur, peer-passed by Dr. Ingrid Bergsson. Educational only. Serious rash or crisis: 112.
Helga R., combined pill GP said Provigil 100 mg breaks the pill. How seriously?
Desk reply
Seriously enough to document backup contraception the same visit modafinil starts. Modafinil induces CYP3A4 and lowers ethinyl estradiol exposure. Label language calls for effective non-hormonal backup or an alternative method during therapy and for one month after the last dose. This is a primary counseling row, not a footnote. See the contraception/shift trace. Confirm with your clinician. Icelandic emergency: 112.
Valgerdur S., 14d Stopped 100 mg fourteen days ago. Combined pill only. Drop backup?
Desk reply
Think in a month after the last dose. Keep backup unless your clinician wrote another method. Two weeks is not the month. Icelandic emergency: 112 if you have a serious rash now. The Provigil 100 lock does not shorten the clock.
Ida M., share Gave two 100 mg tablets to a student cousin before exams.
Desk reply
Diversion. Academic stress is not shift-work sleep disorder. Both of you take legal and medical risk. Do not repeat it.
Katrin D., rash Rash day eight. Finish the strip?
Desk reply
Stop and call at first spread, mouth or eye involvement, or fever. Labels warn about serious rash including Stevens-Johnson syndrome. Rechallenge after a true drug rash is usually off the table. Photograph the eruption.
Tomas E., q4h Four 100 mg tablets through a 20-hour shift because 100 felt flat.
Desk reply
That is not a studied split. Late fractions steal recovery sleep. Ask for a labeled map. Do not invent q4h.
Einar J., night shift 100 mg one hour before every shift including days off?
Desk reply
Shift-work labeling uses a dose about one hour before the work shift - not on days you sleep a normal night unless a clinician wrote a rotating map. Taking modafinil on a recovery day invites insomnia. The Caelum lock is 100 mg; many labels use 200 mg. Do not invent 400 mg because a forum said so. Pair the wake orbit.
Stefan P., CPAP Mask unused twelve nights. 100 mg makes mornings possible.
Desk reply
That is residual sleepiness without primary therapy. Fix the mask. Wake tablets do not hold the airway. Cardiovascular risk stays.
Olafur B., cousin Gave two 100 mg tablets to a cousin before exams.
Desk reply
Diversion. Do not repeat it. Academic stress is not shift-work sleep disorder.
Lara H., cyclosporine Transplant cyclosporine plus new Provigil 100 for shifts.
Desk reply
Induction can lower cyclosporine. Call the transplant team before the first week of nights becomes a level surprise. This desk does not adjust immunosuppressants. Backup contraception still applies if you use a combined pill.
Helgi P., CSA Cyclosporine plus first nights on 100 mg.
Desk reply
Call the transplant team before levels drift. Do not raise 100 mg because you feel sleepy and a trough looks low. Backup contraception still applies if you use a combined pill. Bring both bottles.
Freya A., switch Swap to armodafinil milligram-for-milligram?
Desk reply
Not one-to-one. Armodafinil is the R-enantiomer with a longer effective curve. Read the armodafinil orbit. Contraception rules largely transfer.
Kristjan D., CPAP Twelve unused mask nights, 100 mg mornings, still sleepy. Raise to 200?
Desk reply
Fix the mask first. Residual sleepiness labeling assumes primary therapy. Do not raise Provigil 100 because the hose is dusty. Ask the sleep clinic for a mask review before anyone writes 200.
Bjorn T., import Modalert 200 blister - same contraception rules?
Desk reply
Same INN rules if the tablet is truly modafinil. Brand literacy lives on the Modalert orbit. Counterfeit wake strips with undeclared stimulants exist. Do not dose a mystery foil.
Pia N., mask Mask unused twelve nights. 100 mg makes mornings possible. Keep going?
Desk reply
Fix the mask. Wake tablets do not hold the airway. Cardiovascular risk stays.
Nanna L., q4h Four 100 mg through a 20-hour shift because 100 felt flat.
Desk reply
Not a studied split. Ask for a labeled map. Do not invent q4h. Late fractions steal recovery sleep. Do not steal tomorrow to finish tonight. If a rash or chest pain started, 112.
Gudrun F., CSA Cyclosporine plus first week of Provigil 100 on nights.
Desk reply
Call the transplant team before levels drift. Induction can lower cyclosporine. Backup contraception still applies if you use a combined pill. Icelandic emergency: 112.
Olaug K., 400 Split 100 mg four times through a 20-hour shift.
Desk reply
That is not a studied split. Late fractions steal the recovery sleep and climb anxiety. Ask for a labeled map. Do not invent q4h 100 mg.
Jon P., mania Old bipolar chart. Occupational health wants a wake tablet.
Desk reply
Psychiatric history is a specialist gate. Wake agents can unmask mania. Do not start 100 mg from a forum because the night roster changed. Ask psychiatry and sleep medicine together.
Olaf M., CPAP Can 100 mg replace the mask? I hate it.
Desk reply
No. OSA labeling positions modafinil as an adjunct for residual sleepiness in people who remain on effective primary therapy. Modafinil does not hold the airway open. Untreated apnea plus a wake tablet is a cardiovascular cocktail.
Anna S., pregnancy Positive test, last modafinil yesterday. Keep 100 mg through the roster?
Desk reply
Plan with obstetrics and sleep clinic. Avoidance is the usual stance. Contraception backup during use does not replace a preconception visit you skipped. Do not continue export strips because the roster moved faster than clinic reply.
Svana M., 14d Stopped 100 mg fourteen days ago. Combined pill only. Drop backup?
Desk reply
Labels talk about a month after the last dose. Keep backup until that month is complete unless your clinician wrote a different method.
Sigrid L., 400 mg 100 mg feels flat. Take four?
Desk reply
Label maxima for some indications reach 400 mg daily, often as split 200 mg doses when 200 mg fails - not four 100 mg tablets because Reddit said so. Blood pressure and anxiety climb with unsupervised stacks. Return with a sleep diary.
Niels V., azole Itraconazole for nails started this week. I take Provigil 100 for nights.
Desk reply
Strong CYP3A4 inhibitors can raise modafinil. Ask both prescribers before the next night shift. Do not stack extra caffeine to test it. Rash still stops the wake tablet. Icelandic emergency: 112.
Labels talk about a month after the last dose, not two weeks. Keep backup until that month is complete unless your clinician wrote a different method.
Desk note What does the next sleep visit need?
Desk reply
Indication (narcolepsy vs OSA-plus-CPAP vs shift-work), contraception backup plan, rash history, caffeine stack, BP log, last dose time. Caelum educates. Ingrid at Laugavegur 28 does not prescribe wake agents by thread. Confirm with your clinician. Spreading rash or suicidal ideation: 112.