PT-141 (bremelanotide) is FDA-approved as Vyleesi and has a well-characterized safety profile from clinical trials. Nausea and flushing are the most common side effects.
Medical Disclaimer: This page is for informational and research purposes only. It does not constitute medical advice. Always consult a qualified healthcare professional before using any research chemical or peptide. PT-141 is not FDA-approved for human use (unless noted).
The most common side effect, reported in approximately 40% of patients in clinical trials. Typically occurs within 1 hour of administration and resolves within 12 hours.
Facial flushing reported in approximately 20% of patients. Usually mild and transient.
Reported in approximately 11% of patients in clinical trials.
Bruising, pain, or discomfort at the injection site reported in approximately 13% of patients.
Transient increase in blood pressure (approximately 6 mmHg systolic) reported in clinical trials. Resolves within 12 hours.
Focal hyperpigmentation (darkening of the face, gums, or breasts) reported with repeated use. May be permanent.
Excessive yawning reported by some users, likely related to melanocortin receptor activation.
PT-141 should not be used in the following situations:
Nausea, flushing, and headache are the most common side effects. Nausea is the most frequently reported and is the primary reason patients discontinue treatment.
Focal hyperpigmentation (darkening of the face, gums, or breasts) has been reported with repeated use of PT-141 and may be permanent. This is a known risk.
Yes. PT-141 causes a transient increase in blood pressure of approximately 6 mmHg systolic that resolves within 12 hours. It should not be used by patients with cardiovascular disease or uncontrolled hypertension.
Most side effects (nausea, flushing, headache) resolve within 12 hours of administration. Blood pressure elevation also resolves within 12 hours.
PT-141 should not be used with medications that cause vasodilation (e.g., nitrates, PDE5 inhibitors) due to risk of additive blood pressure effects. Consult a healthcare professional.
Purgo Labs provides HPLC-verified, third-party tested PT-141 for legitimate research purposes. Every batch includes a certificate of analysis.
Shop PT-141 at Purgo LabsMedical Disclaimer: All content on this site is for educational and research purposes only. Research peptides are not FDA-approved for human use. Always consult a qualified healthcare professional before considering any peptide or supplement protocol. Nothing on this site constitutes medical advice, diagnosis, or treatment.