Published by Pep AI · GLP-1 tracker · Updated August 2026
Zepbound is tirzepatide, and its roughly five-day half-life against a seven-day interval is why many people describe the back half of the week feeling different from the first couple of days. Seeing that pattern requires the doses and the symptoms on the same timeline.
Pep AI puts them there. Shot day, injection site, titration changes, weight, food and how you felt all sit against the same dates, so 'the third week was worse' becomes a checkable observation rather than an impression.
Protein tracking is part of it too, because it is the nutrient most likely to fall short when intake drops sharply — and the one that most affects how much of the weight loss comes from lean tissue.
Everything on one timeline
Patterns only appear when doses and outcomes share the same dates.
Side effect log
A consistent scale, dated and timed against your shot, so timing patterns are visible instead of reconstructed.
Doses & schedules
Daily, every-other-day, or fully custom. Get a reminder when it's time, log it in one tap, and your history builds itself.
Vials & reconstitution
Enter your vial and bacteriostatic water and Pep AI converts your dose into exact syringe units — no mixing math, no guessing.
Injection sites
Automatic site rotation so you always know where the last shot went and where the next one should go.
Estimated levels
See your estimated compound level rise and fall between doses, modelled from your schedule and published half-lives.
Pep Bot
An AI assistant with a research-literature retrieval pipeline. Ask what a compound is or how a half-life works — it won't tell you what to take.
Frequently asked questions
Is Zepbound the same as Mounjaro?+
Both are tirzepatide with the same pharmacokinetics. They differ in labelled indication, not in the molecule.
Can I track weight and food alongside my shots?+
Yes. Weight, food, protein and symptoms all sit on the same timeline as your doses, which is what makes patterns visible.
Does Pep AI give medical advice?+
No. Pep AI is a tracking and organisation tool, not a medical device. It does not recommend compounds, doses or schedules, and Pep Bot declines dosing questions. What to take stays between you and a qualified clinician.
