Hair & Skin

Dutasteride Dosage Guide: Strengths, Timing and Titration

Every Dutasteride strength, the standard titration path, timing rules and what to do about a missed dose.

4 min read Updated 2026-01-15Reviewed against manufacturer prescribing information

Dutasteride is supplied in 0.5 mg. The standard approach is 0.5 mg once daily

Strength and use

0.5 mgStarting or low-dose maintenance

Titration path

  1. 1

    Step 1: initiate

    Begin at the lowest useful strength of 0.5 mg.

  2. 2

    Step 2: assess

    Review after the onset window of measurable DHT suppression within 2 weeks.

  3. 3

    Step 3: escalate

    Move up one strength only if the response is partial and tolerance is good.

  4. 4

    Step 4: maintain

    Hold at the lowest effective dose for BPH and off-label androgenetic alopecia and review periodically.

Key takeaways

  • Standard dosing: 0.5 mg once daily
  • Dosing interval: 5-week half-life, daily dosing.
  • Never double up after a missed dose: resume the normal schedule.
  • Store below 30 °C to protect potency across the shelf life.

Missed doses and adherence

If a dose is missed and the next one is close, skip it. Doubling increases the risk of libido change without improving outcomes. Blister packaging and clear dispensing labels measurably improve adherence on soft gelatin capsule lines.

Dutasteride at a glance

Drug classdual 5-alpha reductase inhibitor
Common brandAvodart
Licensed useBPH and off-label androgenetic alopecia
Available strengths0.5 mg
Dosage formsoft gelatin capsule
Typical onsetmeasurable DHT suppression within 2 weeks
Duration / dosing interval5-week half-life, daily dosing
Storagebelow 30 °C

Dutasteride: frequently asked questions

What is Dutasteride used for?+

Dutasteride is a dual 5-alpha reductase inhibitor used for BPH and off-label androgenetic alopecia. It is available in 0.5 mg as a soft gelatin capsule.

How long does Dutasteride take to work?+

Onset is typically measurable DHT suppression within 2 weeks, and the effect lasts 5-week half-life, daily dosing.

What are the most common Dutasteride side effects?+

The most frequently reported effects are libido change, gynaecomastia, ejaculation disorder. Most are mild and dose-related.

Who should not take Dutasteride?+

Dutasteride should be avoided in women and children; do not donate blood for 6 months. A prescriber should review the full medicine list before initiation.

Is generic Dutasteride as effective as Avodart?+

Yes, when it is manufactured to GMP standards and proven bioequivalent. The active molecule and strengths are identical; documentation quality is what differentiates suppliers.

Does ShiningRX supply Dutasteride to my country?+

We supply pharmacies, clinics, hospitals, distributors and consumers across the USA, UK and Australia, with express air freight typically clearing in 7–14 working days.

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