An independent intelligence board aggregating credible research, preprints, clinical findings, biohacking experiments, and community discussions on therapeutic peptides, longevity science, and evidence-based anti-aging. Stories are scored for relevance, credibility, novelty, momentum, and practicality so the most important findings surface first.
Someone posted that after starting two peptides last week they’ve developed several side effects, and most alarmingly they say their vision has worsened so much they can’t read their computer screen. They mention taking a 1 mg dose of “Reta” and nightly 2 mg of GHK‑Cu, and report hunger, tiredness, mild headaches, a two‑pound weight gain, and this sudden vision trouble. GHK‑Cu is a small molecule made of three amino acids bound to copper. It’s been studied in skin and wound healing and shows up in cosmetics and some research as something that can influence repair processes. It’s not a weight‑loss drug, and it’s not the same as prescription medicines like Ozempic. I don’t have reliable, detailed information about “Reta” from this snippet — it could be a brand or shorthand people use online — so I can’t say exactly what that is or how it works. The snippet is an individual’s report, not a formal study. That matters: a single person’s experience can point to a problem but doesn’t prove cause and effect. The effects they list — increased hunger, tiredness, headaches, slight weight gain, and troubling vision changes — are subjective reports. We don’t know their medical history, other medications, exact timing, or whether an eye exam confirmed any measurable change. There’s no information here about clinical trials, numbers of people affected, or whether symptoms improved when the peptides were stopped. For a regular person, the takeaway is caution. New or worsening vision problems are potentially serious and should prompt stopping the suspect product and seeing a clinician or eye specialist quickly. If you’re considering taking GHK‑Cu or any less‑regulated peptide found online, be aware that side effects and interactions are not well‑documented. People who rely on good eyesight for work, driving, or safety should be especially cautious. Important caveats: this is an anecdote, not proof, and the identity and regulation of “Reta” are unclear from the post. Over‑the‑counter or online peptides can vary in purity and dose. Some ingredients can cause allergic reactions, interactions with other drugs, or unexpected effects. Vision loss can have many causes unrelated to these products, so don’t assume correlation equals cause without medical evaluation. If you or someone else experiences sudden vision changes, seek urgent medical attention. Bottom line: one person reports troubling vision changes after starting two peptides — take it seriously, stop the product, and get a prompt medical and eye evaluation rather than assuming it’s harmless.
Source: r/Peptides