All possible dosages and drug forms may not be included here. Your dosage, drug form, and how often you take the drug will depend on:

• your age
• the condition being treated
• how severe your condition is
• other medical conditions you have
• how you react to the first dose

Dosage for bulimia nervosa

Generic: Fluoxetine

• Form: oral capsule
• Strengths: 10 mg, 20 mg, 40 mg

Brand: Prozac

• Form: oral capsule
• Strengths: 10 mg, 20 mg, 40 mg

Adult dosage (ages 18 to 64 years)

Typical dosage: 60 mg per day taken in the morning.

Child dosage (ages 0 to 17 years)

This drug hasn’t been studied in children for this condition. It shouldn’t be used in people younger than 18 years.

Senior dosage (ages 65 years and older)

Seniors may have a higher risk of side effects from this drug. Because of this risk, your doctor may lower your dosage or reduce how often you take the drug.

Dosage for major depressive disorder

Generic: Fluoxetine

• Form: oral capsule
• Strengths: 10 mg, 20 mg, 40 mg

• Form: oral delayed-release capsule
• Strength: 90 mg

Brand: Prozac

• Form: oral capsule
• Strengths: 10 mg, 20 mg, 40 mg

Adult dosage (ages 18 to 64 years)

• Typical dosage: 20–80 mg per day.
• Maximum dosage: 80 mg per day.
• Initial dosage: 20 mg per day taken in the morning.
• Alternative dosage: You may be a candidate for taking this drug once per week. In this case, your doctor will stop your daily dose of the immediate-release capsules and switch you over to the delayed-release capsules. You’ll take 90 mg once per week. You’ll start taking it seven days after your last daily dose of fluoxetine.

Child dosage (ages 8 to 17 years)

• Typical dosage: 10–20 mg per day.
• Initial dosage: After your child takes 10 mg per day for one week, your doctor may increase their dosage to 20 mg per day.

Child dosage (ages 0–7 years)

This drug shouldn’t be used in children younger than 8 years for this condition.

Senior dosage (ages 65 years and older)

Seniors may have a higher risk of side effects from this drug. Because of this risk, your doctor may lower your dose or reduce how often you take the drug.

Dosage for obsessive-compulsive disorder

Generic: Fluoxetine

• Form: oral capsule
• Strengths: 10 mg, 20 mg, 40 mg

Brand: Prozac

• Form: oral capsule
• Strengths: 10 mg, 20 mg, 40 mg

Adult dosage (ages 18 to 64 years)

• Typical dosage: 20–60 mg per day.
• Maximum dosage: 80 mg per day.
• Initial dosage: 20 mg per day taken in the morning.

Child dosage (ages 13 to 17 years, and higher weight children)

• Typical dosage: 20–60 mg per day.
• Initial dosage: 10 mg per day. After two weeks, your doctor will likely increase your child’s dosage to 20 mg per day.

Child dosage (ages 7 to 12, and lower weight children)

• Typical dosage: 20–30 mg per day.
• Initial dosage: 10 mg per day.

Child dosage (ages 0 to 6 years)

This drug shouldn’t be used in children younger than 7 years for this condition.

Senior dosage (ages 65 years and older)

Seniors may have a higher risk of side effects from this drug. Because of this risk, your doctor may lower your dosage or reduce how often you take the drug.

Dosage for panic disorder

Generic: Fluoxetine

• Form: oral capsule
• Strengths: 10 mg, 20 mg, 40 mg

Brand: Prozac

• Form: oral capsule
• Strengths: 10 mg, 20 mg, 40 mg

Adult dosage (ages 18 to 64 years)

• Typical dosage: 20–60 mg per day.
• Initial dosage: 10 mg per day. After one week, your doctor will likely increase your dosage to 20 mg per day.

Child dosage (ages 0 to 17 years)

This drug hasn’t been studied in children for this condition. It shouldn’t be used in people younger than 18 years.

Senior dosage (ages 65 years and older)

Seniors may have a higher risk of side effects from this drug. Because of this risk, your doctor may lower your dosage or reduce how often you take the drug.

Disclaimer: Our goal is to provide you with the most relevant and current information. However, because drugs affect each person differently, we cannot guarantee that this list includes all possible dosages. This information is not a substitute for medical advice. Always to speak with your doctor or pharmacist about dosages that are right for you.

Fluoxetine oral capsule is used for short- and long-term treatment of bulimia nervosa, major depression, and obsessive-compulsive disorder. It’s also used for short-term treatment of panic attacks.

This drug comes with serious risks if you don’t take it as prescribed.

If you stop taking the drug suddenly or don’t take it at all: If you don’t take this drug, the symptoms of your condition may not improve.

Don’t stop taking this drug without talking to your doctor first. Stopping this drug too quickly may cause serious symptoms. These can include:

• anxiety
• irritability
• mood swings
• restlessness
• changes in your sleep habits
• headache
• sweating
• nausea
• dizziness

If you miss doses or don’t take the drug on schedule: Your medication may not work as well or may stop working completely. For this drug to work well, a certain amount needs to be in your body at all times.