Dutasteride Singapore

What is Dutasteride?

Dutasteride is the active ingredient found in Avodart and generic formulations. In Singapore, it is approved for the treatment of benign prostatic hyperplasia (BPH), a condition in which the prostate gland becomes enlarged.

Dutasteride belongs to a class of medicines known as 5-alpha reductase inhibitors. It works by reducing the conversion of testosterone into dihydrotestosterone (DHT), a hormone involved in prostate enlargement and androgenetic alopecia (male pattern hair loss).

As dutasteride is a prescription medicine, treatment should only be started following assessment by a Singapore-licensed doctor.

Dutasteride for Hair Loss

Although dutasteride is approved in Singapore for the treatment of benign prostatic hyperplasia, a doctor may prescribe it for male pattern hair loss where this is considered clinically appropriate.

This is known as off-label prescribing, which refers to the prescribing of a registered medicine for a use outside its approved indication. Whether off-label treatment is appropriate depends on factors including your medical history, previous treatments, current medications and the doctor’s clinical assessment.

If you are experiencing hair thinning or male pattern hair loss, your doctor can discuss the available treatment options, including the potential benefits, risks and limitations of each option.

How Does Dutasteride Work?

Dutasteride inhibits both type I and type II 5-alpha reductase enzymes. These enzymes convert testosterone into dihydrotestosterone (DHT).

Lower DHT levels may reduce stimulation of the prostate and may also influence the progression of androgenetic alopecia. Because dutasteride inhibits both enzyme types, it generally produces greater suppression of circulating DHT than finasteride.

The clinical significance of this difference varies between individuals, and treatment recommendations should be made by a doctor based on each patient’s circumstances.

Dutasteride Dosage

The appropriate dosage of dutasteride depends on the condition being treated and should always follow your doctor’s instructions.

For benign prostatic hyperplasia (BPH), the usual adult dosage is:

• 0.5 mg taken once daily
• May be taken with or without food

When prescribed off-label for hair loss, your doctor will determine whether dutasteride is appropriate and advise you on the recommended dosing schedule.

How to Take Dutasteride

• Take the medicine exactly as prescribed.
• Swallow the capsule whole.
• Do not chew, crush or open the capsule.
• If stomach discomfort occurs, taking the medication with food may help.
• Do not take more than the prescribed dose.
• If you miss a dose, follow your doctor’s advice or the product instructions. Do not take a double dose to make up for a missed dose.

Clinical Evidence for Hair Loss

Several clinical studies have evaluated dutasteride in men with androgenetic alopecia.

Dutasteride reduces circulating DHT levels to a greater extent than finasteride because it inhibits both type I and type II 5-alpha reductase enzymes. Clinical studies have investigated whether this difference may influence treatment outcomes in male pattern hair loss.

As the response to treatment varies between individuals, your doctor can discuss the available clinical evidence, expected treatment duration, monitoring requirements and whether dutasteride is appropriate for your condition.

Potential Side Effects of Dutasteride

Like all prescription medicines, dutasteride may cause side effects, although not everyone experiences them.

Reported side effects include:

• Reduced libido
• Erectile dysfunction
• Reduced semen volume
• Breast tenderness
• Breast enlargement

If you experience persistent side effects or any unexpected symptoms while taking dutasteride, seek medical advice promptly.

Dutasteride vs. Finasteride

Both dutasteride and finasteride belong to the class of medicines known as 5-alpha reductase inhibitors. They reduce DHT levels but differ in how they work.

Your doctor can advise which treatment, if any, may be appropriate after considering your symptoms, medical history and previous treatments.

Important Precautions

Before taking dutasteride, inform your doctor about:

• Current medications
• Liver disease
• Previous allergic reactions
• Plans for fatherhood or fertility concerns
• Any other medical conditions

Blood Donation

Do not donate blood while taking dutasteride and for at least six months after your final dose. This helps prevent exposure of the medicine to pregnant transfusion recipients.

Pregnancy

Women who are pregnant or may become pregnant should avoid handling damaged or leaking dutasteride capsules because the medicine may be absorbed through the skin and could affect the development of a male foetus.

Availability of Dutasteride in Singapore

Dutasteride is a prescription-only medicine in Singapore.

If prescribed by a Singapore-licensed doctor following consultation, generic and branded formulations may be available depending on clinical suitability and availability.

Consultation fees, medication costs and treatment duration vary according to the doctor’s assessment and prescribed treatment plan.

Frequently Asked Questions

Is dutasteride available in Singapore?

Yes. Dutasteride is available in Singapore as a prescription-only medicine. A consultation with a Singapore-licensed doctor is required before it can be prescribed.

Is dutasteride approved for hair loss?

In Singapore, dutasteride is approved for the treatment of benign prostatic hyperplasia (BPH). A doctor may prescribe it for male pattern hair loss where this is considered clinically appropriate.

How long does dutasteride take to work?

The response to treatment varies between individuals. Your doctor can advise what to expect based on your condition and the treatment plan.

Can I stop taking dutasteride?

Do not stop taking any prescribed medication without discussing it with your doctor, as this may affect treatment outcomes.

Who should not take dutasteride?

Dutasteride may not be suitable for everyone. Your doctor will assess your medical history, current medications and overall health before prescribing treatment.

Speak With a Singapore-Licensed Doctor

If you would like medical advice regarding benign prostatic hyperplasia or male pattern hair loss, you may arrange a consultation with a Singapore-licensed doctor through Sire.

If treatment is considered clinically appropriate following assessment, your doctor may discuss available management options, including whether prescription medication is suitable for your condition.