How we research our guides.
Last updated September 29, 2026
People read our guides while making real decisions about their treatment. That is why we hold them to a simple standard: every claim traceable to a source you can open, every regulatory status dated, and no advice that belongs to your prescriber.
Sources we rely on
- Regulators: US prescribing information and Medication Guides (DailyMed, Drugs@FDA), FDA announcements and safety communications, European Medicines Agency product information, Health Canada product monographs and approval notices, and the UK MHRA.
- Peer-reviewed research: the original trial publications (for example in the New England Journal of Medicine, The Lancet and JAMA) and systematic reviews.
- Professional guidance: for example the American Diabetes Association Standards of Care and the 2025 joint nutrition advisory on GLP-1 therapy.
- Company announcements for pipeline news only, labeled as company-reported or topline results that are not yet peer reviewed.
News coverage helps us find stories, but we cite the underlying document instead.
How we write
- Each section opens with a direct answer, followed by the detail and the evidence.
- Trial results name the trial, dose, duration and comparison group.
- Rules that differ by country say which region they belong to; the US label is our default.
- Averages from trials are presented as averages. Individual results vary.
What we will not publish
- Advice to start, stop, skip or change a dose.
- Dosing, reconstitution or “protocols” for unapproved drugs or so-called research peptides, or tips on where to buy them.
- Unit or click conversions, or microdosing schedules.
- Sponsored content or paid placements.
Updates and corrections
We review guides when a label, approval or major study changes, and at least every quarter. The “Updated” date at the top of each guide shows the last review. If you spot an error, email hello@vitamintracker.app and we will correct it and note the change.
Independence
GLP Calendar is our app, and the guides mention it where it is genuinely useful. We are not affiliated with any drug maker. More about us on the about page.
Not medical advice
Our guides explain what labels and studies say. They are not a substitute for advice from your prescriber or pharmacist, who knows your health history.