pepdex
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№ 012

PT-141 (Bremelanotide)

Melanocortin agonist. FDA-approved as Vyleesi for female sexual dysfunction. Used off-label for libido in both sexes.

Libido
Half-life
~2 hours
Route
Subcutaneous
Cycle
Use as needed, not daily
Schedule
30-45 min before activity, max 1x per 24h
In plain English

PT-141 (FDA-approved as Vyleesi) is the libido peptide. Different mechanism than Viagra — it works on desire, not just blood flow. Used as-needed, not daily. Nausea is the main side effect, especially the first few times.

Status & legality
Natty?
Grey area

FDA-approved drug. Most federations would not consider it disqualifying for libido use, but each federation has its own rules.

FDA
Approved

Approved as Vyleesi (Bremelanotide), 2019, for hypoactive sexual desire disorder in premenopausal women.

WADA
Not listed
Prescribed

Yes — Vyleesi prescribed by gynecology, primary care, sexual-medicine providers.

Who it's for

  • →Users with situational or low-baseline libido
  • →Couples wanting a non-PDE5-inhibitor option
  • →People for whom Viagra/Cialis don't address the desire side

What to expect

  1. Week 1

    Effect within hours of first dose. Nausea common at first.

  2. Week 4

    Tolerance to nausea builds. Effect remains.

  3. Week 8

    Used episodically rather than continuously.

Dosing protocol

1.0-1.75 mg sub-q, 30-45 min before activity. No more than 1 dose in 24h, no more than 8 doses per month.

Stacks well with

Standalone
Stacks with PDE5 inhibitors but not common

Side effects

01Nausea (most common, severe in first uses)
02Facial flushing
03Headache
04Transient blood pressure increase
05Skin / mole darkening with frequent use

When NOT to use

  • ⚠Uncontrolled hypertension
  • ⚠Cardiovascular disease
  • ⚠Personal history of melanoma

Bloodwork to monitor

  • • Blood pressure baseline if using regularly

Common mistakes

  • • Dosing too high on first use (nausea will dominate the experience)
  • • Using daily instead of as-needed
  • • Pairing with alcohol — amplifies nausea

Educational only. User-specific dosing is between you and a qualified provider.

Frequently asked

What is PT-141 (Bremelanotide)?+
PT-141 (FDA-approved as Vyleesi) is the libido peptide. Different mechanism than Viagra — it works on desire, not just blood flow. Used as-needed, not daily. Nausea is the main side effect, especially the first few times.
Is PT-141 (Bremelanotide) FDA approved?+
Approved as Vyleesi (Bremelanotide), 2019, for hypoactive sexual desire disorder in premenopausal women.
Is PT-141 (Bremelanotide) banned by WADA?+
PT-141 (Bremelanotide) is not currently on the WADA prohibited list.
Are you still natty after taking PT-141 (Bremelanotide)?+
Grey area. FDA-approved drug. Most federations would not consider it disqualifying for libido use, but each federation has its own rules.
Do doctors prescribe PT-141 (Bremelanotide)?+
Yes — Vyleesi prescribed by gynecology, primary care, sexual-medicine providers.
What's the typical dose of PT-141 (Bremelanotide)?+
1.0-1.75 mg sub-q, 30-45 min before activity. No more than 1 dose in 24h, no more than 8 doses per month.
What are the side effects of PT-141 (Bremelanotide)?+
Common side effects include: Nausea (most common, severe in first uses); Facial flushing; Headache; Transient blood pressure increase. Less common effects and full safety details are on the entry page.
How long until PT-141 (Bremelanotide) starts working?+
Effect within hours of first dose. Nausea common at first.