Reykjavik interaction charts - read only, nothing dispenses from Laugavegur
Caelum Chart Lab

Interaction charts on this desk are for reading, not for writing a prescription or filling a bottle. Open the orbit disclaimer

Orbit · Orbit · CNS

Fluoxetine (Prozac 10 mg) - washout clock before the next SSRI

Last reviewed · 12 min read · Updated

Orbit card

OnsetClinical change lags weeks
DurationParent t½ days; norfluoxetine longer
FoodUsually with or without food - be consistent
AlcoholAdds CNS and judgment risk

The washout owns this page more than the starter milligram

Orbit · fluoxetine (Prozac 10 mg capsules and generics). Washout and CYP2D6 reference - not a remote psychiatry clinic.

Ten days off fluoxetine is not a clean switch. Label language after fluoxetine before an MAOI is at least five weeks. The reverse wait is at least fourteen days. Linezolid and IV methylene blue sit in the same serotonin-syndrome family.

Prozac 10 mg is the Caelum lock because it is a starter capsule, not because interactions shrink at low milligrams. Inhibition of CYP2D6 continues while norfluoxetine hangs around.

If you are mid-switch, the half-life trace is the calendar. This orbit is the interaction grid.

Five weeks before an MAOI is the after-fluoxetine rule. Fourteen days

NSAIDs, aspirin, and warfarin share a bleeding sentence. Black stools are a same-week call.

Week-two activation needs a message. Ideation is a same-day lever. Boxed language for young people still applies at 10 mg.

Twenty-milligram capsules are another row. Climbing without a 2D6 list collects insomnia and surprise TCA levels.

Biotin is a thyroid-assay story on another orbit. Here the wrecker is time and 2D6, not gummies.

Pregnancy plans need obstetrics. Do not flush a working SSRI because a forum fears the whole class.

  • Twenty-milligram capsules are another row. Climbing without a 2D6 list collects insomnia and surprise TCA levels.
  • Biotin is a thyroid-assay story on another orbit. Here the wrecker is time and 2D6, not gummies.
  • Pregnancy plans need obstetrics. Do not flush a working SSRI because a forum fears the whole class.

Norfluoxetine still sits in the room after the bottle hits recycling

Dose changes will not finish reflecting in plasma for several weeks. People who add a TCA ten days after the last Prozac capsule are still in an interaction month. Write the stop date in numbers, not 'last week sometime.'

The five-week MAOI wait after fluoxetine is longer than the fourteen-day wait the other way because of that linger. Chronic high-dose courses can justify an even longer thought. Do not invent a shorter map because mood is impatient.

Linezolid for pneumonia and methylene blue in theatre are the MAOI surprises. The 10 mg starter lock does not shrink those rules.

Tamoxifen needs CYP2D6 to make endoxifen. Oncology generally avoids fluoxetine when another antidepressant will do. Do not stop tamoxifen on a hair-loss forum.

NSAIDs, aspirin, and anticoagulants share a bleeding sentence. Black stools are a same-week call, not a 'push through the winter knees' story.

Activation in weeks two and three needs a same-week message. Ideation is a same-day lever. Family members should know the first-month watch. Boxed language for young people still applies at 10 mg.

Twenty-milligram capsules are another cash row. Climbing without a sleep log and a 2D6 list is how people collect insomnia and a surprise TCA level.

Laugavegur peer-pass starts with last-dose date and tamoxifen, not with a personality lecture about staying the course.

Fluoxetine clock board
ClockRule
MAOI after FLX
At least 5 weeks
FLX after MAOI
At least 14 days
TSH-like patience
Weeks, not days
2D6 after stop
Inhibition lingers

Norfluoxetine still in the room when the calendar says last week

Stop dates written as numbers prevent ten-day SSRI starts that are still interaction months. Norfluoxetine does not respect 'last week sometime.'

Five weeks before an MAOI is the after-fluoxetine rule. Fourteen days is the other direction. Chronic high-dose courses can justify a longer thought. Impatient mood does not shorten the clock.

Linezolid and theatre methylene blue are MAOI surprises. The 10 mg starter lock does not shrink them. Tell inpatient teams the exact last capsule date.

Tamoxifen needs CYP2D6 to make endoxifen. Oncology avoids fluoxetine when another antidepressant will do. Do not stop tamoxifen on a hair-loss forum. Ten milligrams is still potent inhibition.

Flecainide, propafenone, and leftover amitriptyline are narrow-index 2D6 problems. Start them as if fluoxetine were still present two weeks after the last capsule.

Many antipsychotics ride 2D6. A new risperidone plus Prozac 10 mg needs a psychiatry pass, not a silent second week.

NSAIDs, aspirin, and warfarin share a bleeding sentence. Bruising and black stools are same-week calls. Extra INR after an SSRI start is a reasonable habit.

Week-two activation - jitter, 03:00 waking - needs a message. Ideation is a same-day lever. Boxed language for young people still applies at 10 mg.

Twenty-milligram capsules are another cash row. Climbing without a 2D6 list collects insomnia and surprise TCA levels.

Pregnancy plans need obstetrics. Do not flush a working SSRI because a forum fears the whole class equally.

Compare trazodone when a sleep add-on is the live question. A third serotonergic name needs a review, not a shrug.

Vortioxetine five days after 10 mg is not a norfluoxetine holiday. Cross-tapers are written.

Alcohol wrecks sleep in the activation window. It is not a serotonin-syndrome twin, and it is not free.

Peer-pass at Laugavegur starts with last-dose date and tamoxifen, not a stay-the-course speech. Ingrid does not switch by thread.

Sources stay DailyMed washout, 2D6, bleeding, and long half-life sections. Crisis or severe serotonin signs: 112. Reviewed 21 August 2026.

  • Stop dates written as numbers prevent ten-day SSRI starts that are still interaction month
  • Five weeks before an MAOI is the after-fluoxetine rule. Fourteen days is the other directi
  • Linezolid and theatre methylene blue are MAOI surprises. The 10 mg starter lock does not s
  • Tamoxifen needs CYP2D6 to make endoxifen. Oncology avoids fluoxetine when another antidepr

NSAIDs, aspirin, and anticoagulants share a bleeding sentence

SSRIs raise bleeding risk. Daily NSAIDs for knees plus fluoxetine is a spoken pair, not a shrug. Black stools and unusual bruising need a same-week call.

Alcohol adds judgment errors and GI irritation. It is not a serotonin-syndrome twin, and it is not free.

Thioridazine-class QT stories belong to the full label. Recite old antipsychotics even if they 'were only for a month years ago' if they might still be in a drawer.

ADME orbit card
AbsorptionOral capsules; food usually optional - keep the habit stable.
DistributionLarge volume; CNS effect lags plasma start.
MetabolismHepatic CYP (including 2D6) to norfluoxetine; fluoxetine inhibits 2D6.
ExcretionLong terminal presence; urine recovers little unchanged drug.

Early jitter is a call, not a character test

Week-two activation while mood is still flat sends people off the drug forever or into a weekend binge stop. Neither is a plan. Morning dosing and caffeine cuts are small levers. Ideation is a same-day lever.

The SSRI orbit trace walks the first-month watch. This page keeps the enzyme and washout math.

Pregnancy and lactation plans need the obstetric clinician. Do not stop a working SSRI because a forum fears 'all SSRIs' equally.

Fluoxetine till habits

  • Sleep log for fourteen nights before declaring failure
  • Name tamoxifen and 2D6 partners at every visit
  • Do not start an MAOI on a ten-day guess
  • Bleeding drugs stay on the spoken list

Norfluoxetine keeps the interaction after the bottle empties

Fluoxetine half-life is measured in days. Norfluoxetine lasts longer. Dose changes will not finish reflecting in plasma for several weeks. That is why people feel 'still on it' after they stop, and why a new serotonergic agent can surprise them.

Activation in weeks two and three - jitter, 03:00 waking - is a known early window. It needs a same-week call, not a silent quit and not a stoic wait through ideation.

Boxed warning language for suicidal thinking in young people still applies at 10 mg. Family members should know the first-month watch.

1987

US approval era for fluoxetine

Label

Five-week MAOI wait after stop; 14-day wait the other way

2026

Caelum lock on 10 mg capsules, thirty count

Linezolid and theatre methylene blue are the MAOI surprises. Ten milli

Compare trazodone when a sleep add-on is the live question. A third serotonergic name needs a review.

Peer-pass at Laugavegur starts with last-dose date and tamoxifen, not a stay-the-course speech.

Sources stay DailyMed washout, 2D6, bleeding, and long half-life sections.

Educational only. Ingrid does not switch antidepressants by thread.

Confirm with the clinician who can see you this week. Crisis: 112.

fluoxetine notebook
ItemNote
Compare trazodone when a sleep add-on is
chart
Peer-pass at Laugavegur starts with last
till

Stop dates written as numbers, not as last week sometime

Norfluoxetine still occupies the interaction month after the bottle hits recycling. Write the last capsule date in numbers.

Five weeks before an MAOI is the after-fluoxetine rule. Fourteen days is the other direction. Do not invent a shorter map because mood is impatient.

Linezolid and theatre methylene blue are the MAOI surprises. Ten milligrams does not shrink them.

Tamoxifen needs CYP2D6 for endoxifen. Oncology avoids this pair when another antidepressant will do. Do not stop tamoxifen on a forum.

Flecainide, propafenone, and leftover amitriptyline are narrow-index 2D6 problems. Start them as if fluoxetine were still present two weeks after stop.

CYP2D6 neighbors include tamoxifen and narrow-index drugs

Fluoxetine is a potent CYP2D6 inhibitor. A normal metabolizer can look poor. TCAs, many antipsychotics, and antiarrhythmics such as flecainide or propafenone need lower starts or avoidance.

Tamoxifen needs 2D6 to make endoxifen. Oncology generally avoids fluoxetine when another antidepressant will do. Do not stop tamoxifen on a forum. Ask the cancer team.

Inhibition lingers after the last capsule. Starting a 2D6 substrate two weeks after fluoxetine can still be an interaction week.

Fluoxetine interaction board
PartnerIssueDesk move
MAOI / linezolid / IV methylene blue
Serotonin syndrome
Hard timing rules
Tamoxifen
Less endoxifen
Avoid pair if possible
TCA / 2D6 antiarrhythmic
Higher levels
Low start or switch
Tramadol
Serotonin + seizure risk
Prefer another analgesic

Flecainide and a leftover amitriptyline drawer are 2D6 problems

Narrow-index CYP2D6 substrates need lower starts or avoidance. Fluoxetine can make a normal metabolizer look poor. Propafenone and flecainide belong on the spoken list even if the last cardiology letter is two years old.

Many antipsychotics ride 2D6. A new aripiprazole or an old phenothiazine in a travel bag still counts.

Tramadol adds serotonergic load and seizure risk. A shrug at the till is not a review. Prefer another analgesic unless someone documents why both stay.

Alcohol is not a serotonin-syndrome twin. It still wrecks sleep and judgment in the activation window.

Pregnancy plans need obstetrics. Do not flush a working SSRI because a forum fears the whole class equally.

Compare trazodone when a sleep add-on is the question. The pair can be intentional. The third serotonergic add-on usually is not.

Sources stay DailyMed washout, 2D6, bleeding, and long-half-life sections. Canadian tamoxifen language matches the avoid-when-possible stance.

Cross-tapers are written, not borrowed from a roommate

Escitalopram tomorrow after ten days off fluoxetine is a common request and a common error. Prescribers sometimes cross-taper; they rarely treat norfluoxetine as gone.

Compare trazodone when a sleep add-on is the question sitting beside this SSRI. The pair can be intentional. The third serotonergic add-on usually is not.

Personal dose changes stay with the clinician who can see you this week.

Fluoxetine clock chips

LockProzac 10 mg capsules
MAOI after≥5 weeks
MAOI before≥14 days
2D6Tamoxifen avoid when possible

Ten-milligram thirties are the starter cash row

The Caelum lock is generic fluoxetine 10 mg capsules, thirty count. Twenty-milligram capsules are another row. A coupon does not shorten the MAOI clock.

Caelum does not prescribe. The fill block is US-window literacy.

GoodRx average retail$33.02
GoodRx coupon print$14.56

Generic fluoxetine 10 mg x 30 capsules, GoodRx tablet table, 08 July 2026.

Generic fluoxetine 10 mg capsules, thirty count, the Caelum Prozac starter orbit, August 2026. GoodRx lists 10 mg x 30 capsules at $33.02 / $14.56 (08 July 2026). Twenty-milligram capsules are another row. MAOI washout still applies. Caelum does not prescribe.

Seal the fluoxetine interaction orbit

Five weeks after fluoxetine is the MAOI sentence. Ten days is not. Tamoxifen and other 2D6 partners belong on the first visit slip, not the fifth.

Companions: half-life trace, SSRI trace. Switches need the clinician who owns the chart.

Sources

  1. FDA / DailyMed fluoxetine - MAOI timing, long half-life, CYP2D6, bleeding language
  2. Tamoxifen / CYP2D6 product information and oncology interaction practice

Checked against the current label and reviewed by Dr. Ingrid Bergsson. See Lift, Chart, Peer-pass, Publish.

Fluoxetine 4.6 / 5 from 3342 reader ratings

Chart thread

Fluoxetine washout thread at Laugavegur, peer-passed by Dr. Ingrid Bergsson. Educational only. Crisis or severe serotonin signs: 112.

Asta D., new start Day 12 on 10 mg - more anxious and awake at 03:00. Quit?

Desk reply

Activation in the second and third week while mood is still flat is a classic early pattern, not proof the SSRI is wrong and not something to endure in silence. Same-week message with a sleep log. Options include morning dosing, a temporary hold at 10 mg, or a short sleep bridge - you should not stop abruptly without a plan. Pair the SSRI orbit trace. Confirm with your clinician. Icelandic emergency: 112.

Tomas E., flecainide Cardiology restarted flecainide three weeks after fluoxetine.

Desk reply

Three weeks can still be an inhibition week. Tell cardiology the exact stop date and prior milligrams. Narrow-index 2D6 substrates need a low start or a different plan.

Jonas M., oncology liaison On tamoxifen - GP started Prozac 10 mg for hot flashes. Keep both?

Desk reply

Fluoxetine is a potent CYP2D6 inhibitor. Tamoxifen needs 2D6 to make endoxifen. Labels and oncology practice generally avoid this pair when another antidepressant will do. Do not drop tamoxifen yourself. Ask oncology and psychiatry for a 2D6-sparing alternative.

Svana M., MAOI shop Friend mailed phenelzine. Last Prozac 18 days ago.

Desk reply

Eighteen days is not five weeks. Do not start the MAOI. Secure the mailed tablets away from use and call psychiatry. This desk does not clear imported MAOIs.

Anna S., bleed Warfarin plus fluoxetine - extra INR?

Desk reply

SSRIs raise bleeding risk and can interact with anticoagulants. More frequent INR after an SSRI start is a reasonable clinic habit. Do not stop warfarin yourself. Report unusual bruising. Confirm with the clinician who owns the INR.

Ida M., activation Day 16, 03:00 waking, wants to quit and start an MAOI a friend liked.

Desk reply

Do not start an MAOI. The wait after fluoxetine is at least five weeks. Message the prescriber with a sleep log this week. Ideation is 112, not a friend protocol.

Petur A., Akureyri Thioridazine or a 2D6 antiarrhythmic on my old list - still banned?

Desk reply

Narrow-index CYP2D6 substrates need caution or avoidance. Fluoxetine can make a normal metabolizer look poor. Start those partners at the low end if they must exist, and remember the inhibition lingers weeks after the last capsule.

Niels V., 2D6 Risperidone plus new Prozac 10 mg. Pharmacy asked nothing.

Desk reply

Many antipsychotics ride CYP2D6. Fluoxetine can lift levels. Ask psychiatry before the second week, not after stiffness or prolactin surprises. Ten milligrams still inhibits. This desk does not adjust antipsychotics. Icelandic emergency: 112.

Jon P., TCA Amitriptyline 25 mg for sleep plus new fluoxetine 10 mg?

Desk reply

TCAs are CYP2D6 substrates. Fluoxetine can lift amitriptyline levels. That pair needs a prescriber, not a dual-sleep project. Watch anticholinergic load and cardiac history. Ask about dropping the TCA sleep habit if the SSRI is the plan.

Magnus T., Selfoss Tramadol for a sprain plus fluoxetine - pharmacy shrugged.

Desk reply

Tramadol adds serotonergic load and seizure risk in a stack. A shrug is not a review. Ask for a non-serotonergic analgesic unless the prescriber documents why both stay. Fever, clonus, or agitation is urgent care, not a weekend wait.

Stefan P., NSAID Daily naproxen for knees plus fluoxetine. Bruising on arms.

Desk reply

That pair raises bleeding risk. Call this week. Do not stop warfarin-class drugs if present without the INR clinic. Report black stools immediately.

Gudrun F., vortioxetine Psych wants vortioxetine twelve days after my last 10 mg.

Desk reply

Twelve days is still a linger window. Ask for a written cross-taper or a longer wait. Do not start tomorrow on a calendar guess. Confirm with psychiatry. Icelandic emergency: 112.

Sara L., Kopavogur NSAID every day for knees - extra bleed risk with Prozac?

Desk reply

SSRIs raise bleeding risk, more so with NSAIDs, aspirin, or anticoagulants. Report black stools or unusual bruising. Do not stop fluoxetine because of a rumor; bring the pair to the clinician who can change the pain plan.

Olafur B., 20 Self-increased to 20 mg because 10 felt like a sugar capsule at day six.

Desk reply

Day six is too early to judge. Self-climbs skip the activation watch. Message the prescriber with a sleep log rather than opening a 20 mg row yourself.

Pia N., bleed Heavy periods after adding naproxen to 10 mg fluoxetine.

Desk reply

SSRI plus NSAID raises bleeding risk. Call this week. Do not add aspirin for a headache. Black stools or syncope: urgent.

Olaug K., switch Want vortioxetine five days after 10 mg fluoxetine?

Desk reply

Five days is not a norfluoxetine holiday. Cross-tapers are written. Do not start a new serotonergic agent on a five-day guess. Bring the exact stop date.

Elin S., Reykjavik Can I start phenelzine two weeks after my last 10 mg capsule?

Desk reply

No. After fluoxetine the MAOI wait is at least five weeks, longer if the course was high-dose or chronic. The reverse wait - MAOI then fluoxetine - is at least fourteen days. Linezolid and IV methylene blue follow the same serotonin-syndrome logic.

Hildur W., switcher Stopped fluoxetine 10 days ago. Start escitalopram tomorrow?

Desk reply

Ten days is usually too short. Parent half-life is days; norfluoxetine lingers longer. Label washout before an MAOI is at least five weeks after fluoxetine stops. Switching to another SSRI is a prescriber map, not a ten-day calendar guess. Read the half-life trace before you treat last week's last capsule as a clean slate.

Lara H., linezolid Hospital mentioned linezolid. I last took Prozac 10 mg twelve days ago.

Desk reply

Linezolid is an MAOI-class serotonin risk. Twelve days after fluoxetine is not a five-week washout. Tell the inpatient team the exact stop date and milligrams. Do not hide an SSRI because it was only 10 mg. This desk does not clear antibiotics.

Ragnar T., tamoxifen Oncology ok with 10 mg because it is low?

Desk reply

Potent 2D6 inhibition is not a milligram courtesy at 10 mg. Ask oncology for a 2D6-sparing antidepressant if tamoxifen must stay. Do not drop tamoxifen yourself.

Desk note What does the switch visit need?

Desk reply

Last dose date, years on drug, target next agent, tamoxifen or other 2D6 partners, bleeding drugs, and any activation or ideation scores. Caelum educates. Ingrid at Laugavegur 28 does not switch antidepressants by thread. Confirm with your clinician. Severe agitation or suicidal crisis: 112.