Efficacy & Safety of Minoxidil SL Tablets in Men With AGA

Phase 3

Not yet recruiting

• Conditions: Androgenetic Alopecia; Male Pattern Baldness
• Interventions: Drug: Minoxidil; Drug: Placebo

• Registration Number: NCT06924632
• Lead Sponsor: Samson Clinical Operations Pty Ltd

Brief Summary

This is a phase 3, multicentre, randomised, double-blinded, placebo-controlled study examining the safety and efficacy of 2.5 mg sublingual (SL) minoxidil tablets taken twice daily in the treatment of androgenetic alopecia (AGA) in men. The duration of study participation is 32 weeks including screening and safety follow up.

The primary efficacy objective is to determine whether treatment with 2.5 mg SL tablets twice daily increases the number of hairs in men with AGA over 24 weeks. The primary safety objective is to evaluate the safety and tolerability of 2.5 mg SL tablets administered twice daily over 24 weeks.

Detailed Description

Not available

Study Timeline

• Status Verified: 2025-04
• Study First Submitted: 2025-04-06
• Study First Submitted QC: 2025-04-06
• Last Update Submitted: 2025-04-06
• Study First Posted: 2025-04-11
• Last Update Posted: 2025-04-11
• Study Start: 2025-07
• Primary Completion: 2026-07
• Study Completion: 2026-07

Recruitment & Eligibility

• Status: NOT_YET_RECRUITING
• Sex: Male
• Target Recruitment: 132

Inclusion Criteria

• Cisgender males of at least 18 years of age (inclusive) at the time of Screening.
• In good general health in the opinion of the Investigator.
• Presence of androgenetic alopecia with hair density reduction in the centroparietal area or vertex of the scalp classified as Norwood-Hamilton Type III vertex, IV, V or VI.
• Willing and able to attend all study visits and comply with treatment plan and required study procedures including scalp tattooing and hair trimming.
• Willing to maintain the same hair style, hair colour, and hair length in non-balding areas.
• Able to comprehend and willing to sign and date a written patient informed consent form (PICF).

Exclusion Criteria

• Norwood-Hamilton Type IIIa, IVa, and Va grades (i.e. participants must have vertex balding).
• Use of topical minoxidil, oral minoxidil, dutasteride, finasteride, drugs with anti-androgenetic or androgenetic properties, or medications that cause hypertrichosis or hypotrichosis within the 6 months prior to enrolment.
• Laser treatment of the scalp within 3 months prior to enrolment.
• History of scalp micropigmentation or hair restoration surgery.
• Use of wigs, hair extensions, hair pieces, or hair weaves at time of enrolment.
• Use of anti-hypertensive medication.
• Current participation in any other investigational drug or medical device trial, which includes administration of an investigational study medication or medical device, or participation in such a trial within 3 months or 5 half-lives of the investigational product, whichever is longer, prior to receiving the first dose.
• History of hypersensitivity or allergies to minoxidil or any of the excipients contained in the study medication.
• Known allergy or sensitivity to tattoo ink.
• Dermatological disorder (e.g. eczema, psoriasis) or infection affecting the target area (vertex or centroparietal area).
• Scalp characteristics, including scarring, that may interfere with examinations.
• Medical condition which adversely affects hair loss.
• Specific underlying conditions (e.g. cardiovascular disease, congestive cardiac failure, cardiac arrhythmia, systemic lupus erythematosus), clinically significant findings from medical history, clinical laboratory tests, ECG, or vital signs that, in the opinion of the Investigator, could interfere with the objectives of the study or put the participant at risk.
• Moderate to severe renal or hepatic impairment.
• Hypotension (blood pressure less than 90/60 mmHg) or a history of significant symptomatic postural hypotension.
• Untreated or uncontrolled hypertension (blood pressure greater than 150/90 mmHg, not stable on current medication for the past 3 months).
• History or evidence of hair loss other than androgenetic alopecia.
• Unwilling to comply with all study procedures and assessments.
• History of alcohol and/or substance abuse, or drug-abuse disorders.
• Major surgery within 4 weeks prior to the screening evaluation, or planned surgery prior to completion of all study procedures.
• Site employees or immediate family members of study site employees.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
2.5 mg Sublingual Minoxidil BID	Minoxidil	2.5 mg sublingual minoxidil to be taken twice a day, once in the AM and once in the PM.
Placebo BID	Placebo	placebo to be taken sublingually twice a day, once in the AM and once in the PM.

Primary Outcome Measures

Name	Time	Method
Mean Change in Non-vellus Target Area Hair Counts (TAHC)	24 Weeks	Mean change in the vertex scalp non-vellus TAHC from baseline to week 24.