Finasteride for Hair Loss in Singapore: Complete Guide to Dosage, Side Effects & Results

Medically reviewed by Dr. Kevin Chua, Medical Director

Disclaimer: This article provides general medical information and is not a substitute for professional medical advice. Finasteride is a prescription-only medication in Singapore.

Introduction

Finasteride is the most effective oral medication for male pattern hair loss (androgenetic alopecia). Approved for AGA treatment since 1997, it works by targeting the hormonal root cause of hair loss — reducing DHT levels by approximately 70%. This guide covers everything you need to know as a Singaporean man considering finasteride treatment.

How Finasteride Works

Finasteride inhibits the enzyme 5-alpha reductase type II, which converts testosterone into dihydrotestosterone (DHT) in the scalp and other tissues. DHT is the primary androgen responsible for follicular miniaturisation in AGA¹.

By reducing circulating and local DHT levels, finasteride: - Slows or stops hair loss in the majority of men - Promotes partial regrowth in many men (particularly at the crown) - Increases hair thickness — miniaturised hairs may return to normal size

What It Doesn't Do

• Does not work overnight — visible results take 3–12 months
• Does not regrow hair in areas where follicles have been completely lost
• Does not address non-AGA hair loss (alopecia areata, scarring alopecia)

Clinical Evidence

The evidence supporting finasteride for AGA is extensive and robust, making it one of the best-studied hair loss treatments in existence.

Key Studies

• Kaufman et al. (1998): A landmark 2-year RCT showed finasteride 1 mg/day produced a mean increase of 107 hairs/cm² in the vertex area, compared to a loss of 97 hairs/cm² with placebo¹
• 5-year follow-up data confirmed sustained efficacy with continued use²
• Long-term observational studies show that approximately 90% of men who take finasteride maintain or improve their hair status over 5 years, compared to ongoing loss in untreated men

Response Rates

• ~90% of men experience slowing or stopping of hair loss
• ~65% experience visible regrowth (assessed by hair count and clinical photography)
• Best results in men under 40 with Norwood II–IV hair loss

Dosage and How to Take It

Practical Tips

• Set a daily reminder — consistency is more important than timing
• Don't double up — if you miss a dose, just take the next one as scheduled
• Be patient — the first 3–6 months may show little visible change; some men experience initial shedding (which is a sign the treatment is working)

Side Effects: An Honest Assessment

Sexual side effects are the primary concern for men considering finasteride. Here's what the evidence actually shows.

Clinical Trial Data

In the pivotal Kaufman et al. trial¹:

Key point: The difference between finasteride and placebo is small. The majority of men (>98%) experience no sexual side effects.

Post-Finasteride Syndrome (PFS)

Some online communities discuss "post-finasteride syndrome" — persistent sexual side effects after discontinuation. This is a controversial and poorly defined condition:

• No clear biological mechanism has been established
• Studies suggesting persistent effects have significant methodological limitations
• Regulatory agencies (FDA, HSA) have not recognised PFS as a defined medical condition
• Nocebo effect (experiencing side effects because you expect them) is a documented phenomenon in finasteride trials(Based on MOH guidelines and prescribing information)

Our approach: We present the evidence transparently. Sexual side effects occur in a small minority and typically resolve upon discontinuation. If you experience concerning side effects, discuss with your doctor — options include dose reduction or discontinuation.

Other Side Effects

• Breast tenderness or gynaecomastia — rare (<1%)
• Mood changes — occasionally reported; evidence is mixed
• PSA levels — finasteride reduces PSA by approximately 50%; inform your doctor if undergoing prostate screening

Finasteride and Prostate Health

Finasteride was originally developed for benign prostatic hyperplasia (BPH) at the higher dose of 5 mg. At the 1 mg AGA dose, it is not indicated for prostate treatment, but may have some protective effects.

Important for PSA screening: If you're taking finasteride and have a PSA test, your doctor should double the measured PSA value for accurate interpretation. Always disclose finasteride use to any doctor ordering prostate tests.

Getting Finasteride in Singapore

Finasteride 1 mg is a prescription-only medication in Singapore, regulated by the HSA. Options for obtaining it include:

Through noah™

1. Complete online health assessment (including hair photos)
2. Doctor review and prescription
3. Monthly delivery to your door
4. Ongoing monitoring and follow-up

Through a GP or Dermatologist

Visit in person for assessment and prescription. Consultation fees apply separately.

What About 5mg Finasteride (Proscar)?

Some men split 5 mg finasteride tablets (prescribed for BPH) into quarters to save money. While this provides approximately the correct dose, the split pieces may not be uniform in active ingredient distribution. More importantly, handling crushed or broken finasteride tablets poses a risk to women (particularly pregnant women) due to potential absorption through the skin. noah™ provides appropriately dosed 1 mg tablets.

Cost in Singapore (SGD)

Hair loss treatments in Singapore are generally affordable for long-term use. Finasteride (oral) costs approximately SGD $30–80 per month, while dutasteride ranges from SGD $50–120 per month. Topical minoxidil is available from SGD $20–50 per month depending on brand and concentration. noah™ treatment plans bundle consultation and medication for convenience.

Prices are approximate and may vary. Updated April 2026.

FAQ

1. How long before I see results?

Most men notice reduced shedding within 3 months. Visible improvement in density typically takes 6–12 months. Full results are best assessed at 12–18 months.

2. What happens if I stop taking finasteride?

Hair loss resumes. Benefits reverse over approximately 6–12 months, returning to the trajectory you would have been on without treatment. This is because finasteride treats the symptom (DHT-mediated hair loss) rather than curing the underlying genetic susceptibility.

3. Can I take finasteride with minoxidil?

Yes — this combination is the gold standard. Finasteride addresses the cause (DHT), while minoxidil stimulates growth. They work through different mechanisms and complement each other.

4. Does finasteride affect fertility?

Finasteride may slightly reduce sperm count but does not affect fertility in most men. If you're actively trying to conceive, discuss timing with your doctor — some specialists recommend temporary discontinuation.

5. Is the generic as effective as branded Propecia?

Yes. Generic finasteride contains the same active ingredient at the same dose and must meet HSA bioequivalence standards. It is equally effective and significantly more affordable.

References

→ Return to pillar: Complete Guide to Hair Loss Treatment in Singapore

This article is for informational purposes only and does not constitute medical advice. Always consult a licensed doctor before starting any treatment.