Melanotan II

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Melanotan II is a synthetic cyclic melanocortin peptide developed from the structure of alpha-melanocyte-stimulating hormone (α-MSH). Research has focused on melanogenesis, skin pigmentation, melanocortin receptors, and additional physiological effects.

Product Information

Melanotan II is a potent melanotropic analogue containing a cyclic structure that increases its activity compared with native α-MSH. Early human research demonstrated increased pigmentation along with other melanocortin-related effects, including spontaneous erections.

How It Works

Melanotan II activates melanocortin receptors, particularly pathways involved in melanogenesis. Activation of melanocortin signaling can increase melanin production and produce broader physiological effects depending on receptor distribution.

POTENTIAL BENEFITS

1. Melanogenesis Research

Melanotan II strongly stimulates melanocortin pathways involved in melanin production. Human research demonstrated measurable increases in pigmentation after repeated administration.

2. Skin-Pigmentation Research

The compound has been investigated as a model for increasing skin pigmentation through melanocortin-receptor activation rather than direct exposure to ultraviolet radiation.

3. Melanocortin-Receptor Research

Melanotan II provides a useful pharmacological model for investigating the biological effects of melanocortin receptor activation and the relationship between receptor signaling and pigmentation.

4. Sexual-Function Research

Early human research unexpectedly identified erectile responses during Melanotan II administration. This led to additional research into melanocortin pathways involved in sexual function.

Dosage

A small phase I human study began at 0.01 mg/kg, with some participants escalated to 0.025–0.03 mg/kg. The study was extremely small and was designed for preliminary pharmacological evaluation rather than establishing a general clinical dose. (pubmed.ncbi.nlm.nih.gov)

Side Effects

The early human study reported nausea, fatigue, somnolence, stretching/yawning, spontaneous erections, and increased pigmentation. Because melanocortin receptors are distributed across multiple tissues, effects are not limited to the skin.

References

1. Wessells H, et al. *Evaluation of melanotan-II, a superpotent cyclic melanotropic peptide in a pilot phase-I clinical study.*
2. Melanocortin peptides and receptor pharmacology.

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