Fluoxetine
Fluoxetine is a selective serotonin reuptake inhibitor (SSRI). Benefit develops gradually, while activation, sleep change or other adverse effects may appear earlier. Listed uses include major depressive disorder, obsessive-compulsive disorder and bulimia nervosa.
Key points
- New suicidal thoughts, severe agitation or a switch toward mania needs prompt assessment.
- Other serotonergic medicines can cause serotonin syndrome.
- Fluoxetine remains in the body for a long time, so interactions can continue after it is stopped.
Select a listed product and pack to order online. Whether it suits you depends on mental-health assessment and interaction checks; ask your doctor or pharmacist.
Important safety checks
Review bipolar disorder, suicidal thoughts, seizures, bleeding risk, low sodium, liver disease, pregnancy and serotonergic medicines. It must not be combined with monoamine oxidase inhibitors.
When to seek urgent care
Seek urgent help for suicidal intent, severe agitation with fever and stiffness, a seizure, severe confusion, fainting, facial swelling or breathing difficulty.
Further reading
What is fluoxetine used for?
Fluoxetine is used for major depression, obsessive-compulsive disorder and an eating disorder (bulimia nervosa).
How does fluoxetine work?
Fluoxetine is a selective serotonin reuptake inhibitor (SSRI). It blocks the serotonin transporter, which raises serotonin levels in the brain.
Which fluoxetine product can I order on SGMeds?
The fluoxetine product on SGMeds is Fludac, and its page gives the strengths and pack sizes.
How long does fluoxetine take to work?
Fluoxetine can take 2 to 4 weeks before the full effect shows. Some side effects, such as restlessness or a change in sleep, may start sooner.
What are the side effects of fluoxetine?
Common side effects include nausea, headache, insomnia, fatigue and diarrhoea. Some people also get anxiety, tremor, dizziness, weight changes or sexual problems. Get urgent help for suicidal thoughts, severe agitation with fever and stiffness, a seizure, severe confusion, fainting, facial swelling or breathing difficulty.
Can fluoxetine be taken with alcohol or other medicines?
Fluoxetine can interact with alcohol, St John's wort and tramadol, and taking other medicines that raise serotonin can cause a reaction to too much serotonin (serotonin syndrome). Never take it with a monoamine oxidase inhibitor. Because it stays in the body for a long time, interactions can continue after you stop, so ask a doctor or pharmacist before mixing it with alcohol or other medicines.
What are other names for fluoxetine?
In other countries, fluoxetine is also sold as Prozac and Oxactin. Brand names vary between countries, so compare products by their active ingredient.
What does fluoxetine cost in Singapore dollars?
The product on this page shows a price for each strength and pack size in Singapore dollars, converted from US dollars, so the exchange rate can change the final amount. Larger packs usually cost less per tablet.
Payment and prices →Do I need a prescription for fluoxetine in Singapore?
No. SGMeds does not ask for a prescription to order fluoxetine: we place the order with our pharmacy partner, which prepares it and arranges delivery on your behalf.
Ordering without a prescription →Can I buy fluoxetine online in Singapore?
Yes, here on SGMeds: choose the product, strength and pack, then check out. Parcels go to Singapore and Malaysia by Express shipping (tracked, up to 1 week) or Regular shipping (up to 3 weeks).
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