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Fluoxetine

Last updated on July 3, 2019.

Overview   |   Dosage   |   Side Effects   |   Where To Buy  

GENERIC NAME: Fluoxetine 

CHINESE NAME: 氟西汀

COMMON BRANDS IN HONG KONG: Prozac 百憂解, Altazac 

What is Fluoxetine for?

Fluoxetine (Prozac) belongs to a class of medications called selective serotonin reuptake inhibitors (SSRIs). SSRIs are antidepressants which work by allowing a type of chemicals, serotonin, to stay longer in the brain in order to boost mood. Fluoxetine can be used to treat depression, obsessive-compulsive disorder (OCD),  bulimia nervosa, and menopausal symptoms, particularly hot flushes.

How to use it?

Fluoxetine (e.g. Prozac) is available as tablets and capsules to be taken by mouth. The adult and elderly doses are listed below: 

For depression

Adult 

Start with 20 mg daily in a single or divided doses and the dose can be increased after 3-4 weeks if necessary. The maximum daily dose is 60 mg. 

Elderly 

Start with 20 mg daily in a single or divided doses and the dose can be increased after 3-4 weeks if necessary. The maximum daily dose is 40 or 60 mg. 

For obsessive-compulsive disorder (OCD)

Adult 

Start with 20 mg daily in a single or divided doses and the dose can be gradually increased up to 60 mg daily if necessary. Tell your doctor if you find no or little improvement after 10 weeks and your doctor will review your treatment plan. 

Elderly 

Start with 20- mg daily in a single or divided doses and the dose can be gradually increased up to 40 or 60 mg daily if necessary. Tell your doctor if you find no or little improvement after 10 weeks and your doctor will review your treatment plan. 

For bulimia nervosa

Adult 

60 mg daily in a single or divided doses. 

Elderly 

Up to 40 or 60 mg daily in a single or divided doses. 

For menopausal symptoms (particularly hot flushes) 

Adult 

20 mg once daily. 

What are the side effects of Fluoxetine?

Side effects of Fluoxetine include anxiety, abnormal appetite, insomnia, weakness, impaired concentration, confusion, constipation, diarrhoea, dizziness, gastrointestinal discomfort, bleeding, headache, sexual dysfunction, vomiting, and weight changes. 

Where to buy Fluoxetine in Hong Kong?

In Hong Kong, Fluoxetine is a prescription only medicine, and requires a prescription from a doctor to be purchased in a pharmacy. It can also be obtained from doctors. To find a pharmacy near you, refer to the list of pharmacies (“Authorized Sellers of Poisons”) from the Hong Kong Department of Health.

For more information about drug names and ingredients, you can visit Hong Kong’s Drug Office at http://www.drugoffice.gov.hk

For detailed information about the use of Fluoxetine in children, pregnancy and breastfeeding, and for questions about drug interactions, please check with your pharmacist or doctor.

Disclaimer: our goal is to provide you with the most relevant drug information and common dosage for Hong Kong. This information does not constitute medical advice. For specific treatment recommendations and advice, always discuss with your doctor or pharmacist, and follow the instructions included with your specific medicine.

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