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Research-grade retatrutide is most commonly available in 5 mg, 10 mg, 20 mg, 24 mg, and 30 mg vial sizes
The possibility of offering new hope to individuals struggling with addiction is what makes this work so meaningful. Original study: DOI 10.1038/s41598-025-17927-w Authors: Fatima Quddos, graduate, Virginia Tech Translational Biology, Medicine, and Health Graduate Program Mary Fowler, research assistant and programs coordinator, Fralin Biomedical Research Institute at VTC Ana Carolina de Lima Bovo, Ph.D., postdoctoral associate, Fralin Biomedical Research Institute at VTC Zacarya Elbash, research assistant, Fralin Biomedical Research Institute at VTC Allison N

Topical Administration (Most Common) The most widely used approach is topical application via DMSO (dimethyl sulfoxide): Dissolve 3-5mg Dihexa in a few drops of DMSO Apply to forearm skin (DMSO acts as a carrier to drive the peptide through the skin) DMSO concentration: ~20-30% in the solution Pros: Effective absorption, avoids injection Cons: DMSO has a strong garlic-like odor that can transfer to breath/skin Starting Dose Begin at 1-3mg topically to assess response Work up to 3-5mg if tolerating well Cycling Protocol Dihexa appears to have lasting effects that persist after stopping likely due to synaptogenesis (new connections don't disappear when you stop)