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Someone posted a short report saying that when they used Melanotan 1, they experienced real nausea and a loss of appetite. They described the nausea as not too terrible but bothersome, and said they hoped it would go away. Their motive for trying Melanotan was to get a protective tan to avoid sunburn and, in their words, reduce the chance of sun damage or skin cancer — not to look tanned for cosmetic reasons. Melanotan 1 is a synthetic peptide — a tiny string of amino acids, which is how many natural signals in the body are built. It’s related to melanocyte-stimulating hormones, which tell skin cells to make more pigment (melanin). People use Melanotan products because they can increase skin pigmentation without a lot of sun exposure. These products are not approved medicines in many countries and are usually sold online as research chemicals or unregulated supplements. The post you quoted is an anecdote: a single person’s report, not a controlled study. It says they felt nausea and reduced appetite after using Melanotan 1, which matches other user reports and some case notes in medical literature. But anecdotal reports don’t tell us how common those effects are, how strong they are on average, or whether they happen long-term. Rigorous studies comparing people who take Melanotan to similar people who don’t — tracking side effects, benefits, and safety over time — are limited or lacking. Why this matters is practical. Some people look for alternatives to sunbathing or tanning beds because UV exposure raises the risk of skin damage and skin cancer. A substance that safely increases melanin could, in theory, offer some protection. But if the product causes nausea, appetite loss, or other problems, that changes the risk-benefit balance. People with certain medical conditions, or who are pregnant, breastfeeding, or taking other medications, would especially want to be cautious. There are important caveats. Melanotan products are often unregulated: their purity, dose, and even identity can be uncertain. Known side effects reported by users and in medical case reports include nausea, lightheadedness, and changes in blood pressure; other, rarer problems have been reported. Because these products aren’t approved skin-protection drugs, we don’t have clear evidence that using them reduces long-term skin cancer risk. If you’re considering anything like this, it’s safer to talk with a healthcare professional and rely on proven sun-protection measures like sunscreen, protective clothing, and avoiding peak UV hours. Bottom line: one person’s report suggests Melanotan 1 can cause nausea and appetite loss, but that single account doesn’t establish safety or benefit, and these products carry real uncertainties and risks.
Source: r/Peptides