Free library
The peptide & supplement tracking library
63 structured, source-backed entries — 24 peptides plus medications, and 24 supplements — covering research status, how each compound works, what people commonly track, and the questions worth bringing to a clinician. Free to read. Education only, not medical advice.
Reta is a tracking and education tool — not a medical provider. Nothing here is a diagnosis, treatment, prescription, or dosing recommendation. Peptides and medications should only be used under the direction of a licensed clinician. Talk to a qualified clinician before starting, stopping, combining, or changing anything. Many compounds below are not FDA-approved for human use; some are investigational or sold through unregulated channels where purity and dosing are not guaranteed.
Retatrutide
medicationRetatrutide is an experimental once-weekly injectable being studied for obesity and type 2 diabetes. It is the first triple agonist (acting on GLP-1, GIP, and glucagon receptors) to reach Phase 3. Because it is investigational, it is only legitimately available through clinical trials — products sold elsewhere are unregulated and of unknown identity, purity, and dose.
Read the full entryTirzepatide
medicationTirzepatide is a prescription once-weekly injectable that activates two incretin receptors (GIP and GLP-1). It is approved and clinician-managed. People using it commonly track appetite, food tolerance, protein intake, and weight, because appetite and gastric emptying are strongly affected.
Read the full entrySemaglutide
medicationSemaglutide is a prescription GLP-1 receptor agonist, injectable weekly (Ozempic/Wegovy) or oral daily (Rybelsus). It is approved and clinician-managed. Appetite reduction is prominent, so protein intake and hydration are commonly tracked.
Read the full entryRetatrutide + Tesamorelin
otherThis combination is discussed at the intersection of GLP/GIP/glucagon research and growth-hormone-axis therapy. It should be understood as an educational overview, not a protocol or recommendation.
Read the full entryBerberine
supplementA plant alkaloid studied for blood sugar and lipids, with modest effects in trials. It meaningfully interacts with many medications (including diabetes drugs), so it belongs in a clinician conversation — especially if you're already on metabolic medication.
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Want to track your own protocol?
The library is free for everyone. Personal tracking — clinician-directed protocols, supplement stacks, reminders, dose logs, and insights — is available in Reta's Public Beta.
Members can also organize commonly discussed combinations, or “stacks,” into structured tracking routines — keeping protocols, supplements, reminders, and progress notes in one place, without replacing clinician guidance.