Peptide profile
PT-141 (Bremelanotide)
Melanocortin receptor agonist for sexual function
Compare PT-141 (Bremelanotide) with other peptides →Summary
A helper for sexual health and desire.
- Typical dose
- 1.75mg As needed (max 8 doses/month)
- Route
- Subcutaneous
- Cycle length
- On-demand
- Evidence
- Limited human data
Mechanism
How it works
PT-141 bypasses the visual stimulation pathway and talks directly to the brain's desire center — like calling a restaurant directly to order.
Cyclic heptapeptide melanocortin analog activating melanocortin receptors in the CNS for erectile response independent of visual stimulation.
Reported in research
Benefits
- Helps create erections without needing to see anything
- Works even when pills like Viagra do not
- Boosts sexual desire in men and women
Context, not a prescription
Dosing
- Typical range
- 1.75mg As needed (max 8 doses/month) (Subcutaneous)
- Cycle length
- On-demand
Safety
Side effects & contraindications
Possible side effects
- Nausea (up to 40%)
- Facial flushing
- Injection site reactions
- Spontaneous erections
- Headache
- Dizziness
- Darkening of moles
Contraindications
- Uncontrolled hypertension
- Severe cardiovascular disease
- Pregnancy or breastfeeding
Research information, not medical advice. Always consult a licensed clinician before considering any peptide.
In depth
Full profile
What it does
More sexual desire, better erections, and desire that comes on its own.
How it works
PT-141 skips the seeing part and talks right to the brain's desire center. It is like calling a restaurant directly to order food.
It turns on special switches in the brain that control desire.
What to expect
It starts working in 45-60 minutes. It lasts 2-6 hours.
- 15-30 minutes: You might feel a little sick to your stomach. This is normal.
- 45-60 minutes: Your sexual desire starts to grow.
- 1-2 hours: This is when it works the best.
Good to know
- Take medicine for nausea before using it
- Start with a smaller amount (0.5-1.0mg)
- Use it when your stomach is empty
Staying safe
- Feeling sick to your stomach (up to 40% of people)
- Face getting red and warm
- Redness where you got the shot
- Erections that happen on their own
Avoid if you have:
- People with high blood pressure that is not controlled
- People with serious heart problems
- Women who are pregnant or breastfeeding
Mechanism of action
Cyclic heptapeptide melanocortin analog activating melanocortin receptors in the CNS for erectile response independent of visual stimulation.
Activates MC3R and MC4R receptors in the hypothalamus and limbic system.
Pharmacodynamics
Onset within 45-60 minutes; duration 2-6 hours.
Increased libido, enhanced erectile function, spontaneous sexual desire.
Timeline
- 15-30 minutes: Initial nausea may occur (common).
- 45-60 minutes: Onset of libido enhancement.
- 1-2 hours: Peak erectile response duration.
Comparisons
- PT-141 — effectiveness High, safety Good, cost $$$, Easy to use
- Sildenafil — effectiveness High, safety Good, cost $$, Easy to use
Adverse effects
Common:
- Nausea (up to 40%)
- Facial flushing
- Injection site reactions
- Spontaneous erections
Rare:
- Headache
- Dizziness
- Darkening of moles
Contraindications & risk mitigation
Contraindicated in:
- Uncontrolled hypertension
- Severe cardiovascular disease
- Pregnancy or breastfeeding
- Take anti-nausea medication prior
- Start with lower dose (0.5-1.0mg)
- Administer on empty stomach
Qué hace
Más deseo sexual, mejores erecciones y deseo que surge por sí solo.
Cómo funciona
PT-141 omite la parte de la visión y se comunica directamente con el centro del deseo en el cerebro. Es como llamar a un restaurante para pedir comida.
Activa interruptores especiales en el cerebro que controlan el deseo.
Qué esperar
Comienza a funcionar en 45-60 minutos. Dura de 2 a 6 horas.
- 15-30 minutos: Podrías sentir un poco de náuseas. Esto es normal.
- 45-60 minutos: Tu deseo sexual comienza a aumentar.
- 1-2 horas: Es cuando funciona mejor.
Bueno saber
- Tomar medicina para las náuseas antes de usarlo
- Comenzar con una cantidad menor (0,5-1,0 mg)
- Usarlo con el estómago vacío
Manteniéndose seguro
- Sentirse con náuseas (hasta un 40% de las personas)
- Cara roja y caliente
- Enrojecimiento en el lugar de la inyección
- Erecciones que ocurren por sí solas
Evitar si tienes:
- Personas con presión arterial alta no controlada
- Personas con problemas cardíacos graves
- Mujeres embarazadas o en periodo de lactancia
Mecanismo de acción
Análogo de melanocortina heptapéptido cíclico que activa los receptores de melanocortina en el SNC para una respuesta eréctil independiente de la estimulación visual.
Activa los receptores MC3R y MC4R en el hipotálamo y el sistema límbico.
Farmacodinamia
Inicio en 45-60 minutos; duración de 2 a 6 horas.
Aumento de la libido, mejora de la función eréctil, deseo sexual espontáneo.
Cronología
- 15-30 minutos: Pueden aparecer náuseas iniciales (común).
- 45-60 minutos: Inicio del aumento de la libido.
- 1-2 horas: Duración de la respuesta eréctil máxima.
Comparaciones
- PT-141 — efectividad Alta, seguridad Buena, costo $$$, Fácil de usar
- Sildenafil — efectividad Alta, seguridad Buena, costo $$, Fácil de usar
Efectos adversos
Comunes:
- Náuseas (hasta un 40%)
- Enrojecimiento facial
- Reacciones en el sitio de inyección
- Erecciones espontáneas
Raros:
- Dolor de cabeza
- Mareos
- Oscurecimiento de lunares
Contraindicaciones y mitigación de riesgos
Contraindicado en:
- Hipertensión no controlada
- Enfermedad cardiovascular grave
- Embarazo o lactancia
- Tomar medicación antinauseosa previamente
- Comenzar con una dosis menor (0,5-1,0 mg)
- Administrar con el estómago vacío
Reference data
Specifications
- Route
- Subcutaneous
- Cycle length
- On-demand
FAQ
Common questions
Is PT-141 FDA-approved?
Yes, as Vyleesi for hypoactive sexual desire disorder (HSDD) in premenopausal women.
Does PT-141 work if Viagra doesn't?
Yes, clinical trials showed it induced erections in patients with inadequate Viagra response.
What is the evidence level?
This compound is classified as Limited human data. Some human data exists but trials are small, short-term, or not yet replicated.
Research
Research & sources
Current evidence for PT-141 (Bremelanotide) is rated as Limited human data. Limited human data is available.
- 1. Bremelanotide for HSDD (2019) — DOI:10.1016/j.jsxm.2019.01.009
- 2. Melanocortins and sexual function (2018) — DOI:10.1038/s41443-018-0044-4
- 3. Bremelanotide for HSDD (2019)
- 4. Melanocortins and sexual function (2018)