About GLP Ladder

GLP Ladder is an independent tools-and-reference site for three compounds: retatrutide, tirzepatide (Zepbound, Mounjaro) and semaglutide (Wegovy, Ozempic). It is built and maintained by the GLP Ladder Editorial Team. We publish as a team, not as named individuals, and we do not present anyone as a medical expert or reviewer.

The site exists to do arithmetic and sourcing carefully. Calculators, charts and explainers are the product; articles exist to explain what the tools show and where the numbers come from.

What we do

• Calculators. A dose-level plotter, mg-to-units, reconstitution, titration, cost, storage and pen-to-vial tools, each tested against worked examples.
• Published ladders. Dose schedules exactly as they appear in FDA prescribing information or in published trial protocols, shown as tables and charts with the source named.
• Reference guides. Plain explanations of trial results, labels, half-lives and side effects, with every efficacy number tied to its timepoint and analysis.
• Comparisons. Side-by-side pages that state plainly where trials differ in population, duration and analysis, so a gap between two numbers is not mistaken for a head-to-head result.

What we do not do

• We do not link to vendors, sellers or compounding sources, and we do not publish promotional codes.
• We do not run ads at launch. See Disclosures for what would change that and how it would be shown.
• We do not give dosing advice to individuals. Retatrutide is investigational and not approved by the FDA; we report what trial participants were given, as published facts, and nothing more. For approved drugs we quote the label and point readers to their prescriber.
• We do not offer accounts, comments or user profiles.
• We do not publish reviews, ratings, testimonials or quotes from invented experts.

Why tools first

Most questions people bring to this topic are arithmetic: how many units is a given dose at a given concentration, how long a titration step lasts, how much of a weekly dose is left after seven days. A calculator can answer those exactly, show its formula and be tested. A paragraph of advice cannot.

Three habits follow from that choice.

1. Exact arithmetic. Every tool shows the formula it uses. Unit conversions follow the stated concentration, vial strength and water volume, not rounded rules of thumb.
2. Published ladders. A dose schedule on this site is one that a label or a trial protocol actually published. We do not design schedules.
3. Dated sources. Each page lists its sources with publication dates and the date we accessed them. When a number changes, the page says so and the updated date changes with it.

Who is behind the site

The GLP Ladder Editorial Team researches, drafts, checks and maintains every page. We are an editorial team rather than a company with a roster of credentialed reviewers, and we say so because the topic is health-related and readers deserve to know what they are reading. Where a page carries a byline, it is the team name. Our process is described in Methodology and our standards in Editorial policy, including how AI assistance is used and checked.

How to read the site safely

GLP Ladder is for education and research. Nothing here is medical advice, and the calculators do not know your health history. If you take or are considering a prescription medicine, your prescriber and pharmacist are the right people to ask about dose, timing and storage. Read the Terms for the full statement.

Where to find the details

• Methodology: how we research, verify and update.
• Model card: the pharmacokinetic model behind the plotter, with its assumptions and limits.
• Editorial policy: independence, standards and corrections.
• Disclosures: funding, relationships and research-use notices.
• Sources: the dated list of primary sources behind every page.

Report an error

If you find a number that does not match its source, a broken calculation or a stale date, tell us through the contact page. Include the page URL, the number in question and the source you checked. We review reports against the primary source, and confirmed errors are corrected on the page with the updated date changed.