Guides for GLP-1 and peptide tracking
Plain-English answers to the questions people ask about doses, jab days, side effects, eating and drinking, progress, injection sites and half-lives. General information, not medical advice.
GLP-1 medications
Tracking Mounjaro, Wegovy, Ozempic and the daily GLP-1s.
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The best way to track Mounjaro: what a tracking app should actually do
What to track on Mounjaro (doses, jab days, titration steps, sites, weight, side effects) and what a good tracking app should do for you.
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Wegovy tracker: doses, jab days and your step-up plan
How to track Wegovy: jab day reminders, the step-up dose plan, site rotation, weight trends and a record to show your prescriber.
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Tracking daily GLP-1s: Saxenda injections and Rybelsus pills
Daily GLP-1s need different tracking to weekly jabs. Reminders, daily site rotation for Saxenda and honest records for Rybelsus pills.
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Mounjaro titration schedules: keeping track of when your dose changes
How Mounjaro step-up plans work, and how to make sure you inject the right dose on the right week without keeping it all in your head.
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Your first injection day: what to expect and how to prepare
A calm walkthrough of your first GLP-1 jab or shot: choosing a site, what to record, what can happen afterwards and how to prepare.
Weight, body and daily habits
Protein, water, plateaus, measurements, photos and sharing progress.
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Protein on Mounjaro or Wegovy: how to protect muscle when you are barely hungry
Why protein matters when a GLP-1 kills your appetite, how much people commonly aim for, easy ways to hit it, and how to track it without a food diary.
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Drinking enough water on Mounjaro or Wegovy
GLP-1s quieten thirst as well as hunger. Why dehydration happens on Mounjaro and Wegovy, how much to drink, electrolytes, and an easy way to track it.
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Weight loss stalled on Mounjaro? How to tell if it is a real plateau
Why weight loss slows or stalls on Mounjaro, Wegovy or Zepbound, how to tell a real plateau from normal fluctuation, and what to bring to your prescriber.
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How to take body measurements while on a GLP-1
How to measure your waist, hips and more properly while on Mounjaro or Wegovy, how often to measure, and why inches lost matter when the scale stalls.
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How to take progress photos on a GLP-1 that you can actually compare
How to take consistent weight loss progress photos on Mounjaro or Wegovy: lighting, poses, how often, comparing before and after, and keeping them private.
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How to share your weight loss progress without sharing your weight
Want to share your GLP-1 progress but not your weight or medication? How to share percentage lost, a chart or photos and keep private details private.
Doses, schedules and supply
Missed doses, odd schedules, reorders and appointments.
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Forgot which day you took Mounjaro? Do this first
Cannot remember if or when you took your Mounjaro jab? How to check safely, what the label says about missed doses, and how to stop wondering.
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When to reorder your Mounjaro pen so you never run out
Time your Mounjaro reorder around pharmacy processing, delivery and stock issues, count doses left, and get reminded before you run out.
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Every 5 days, 5-on-2-off and other non-weekly injection schedules
How to track non-weekly injection schedules like every 5 days, 5 on 2 off or cycles, and why weekly-only trackers get them wrong.
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What to tell your doctor at your Mounjaro review
The things your prescriber wants to know at a Mounjaro review, and how to walk in with real data on doses, weight and side effects.
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Side effects the day after your injection: why timing matters on a GLP-1
Why GLP-1 side effects like nausea often peak a day or two after your jab, how long they last after a dose increase, and how to log them in a way that helps.
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Can I change my Mounjaro or Wegovy injection day?
How to change your weekly injection day on Mounjaro, Zepbound, Wegovy or Ozempic, the minimum gap the labels require, and moving one dose without losing track.
Injection sites
Rotation, lumps and soreness.
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Mounjaro injection site rotation: how to remember which side to inject
A simple injection site rotation for stomach, thighs and arms on Mounjaro or any weekly jab, and how to stop relying on memory.
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Injection site lumps: why they happen and how rotation helps
Why lumps, bruises and soreness appear at GLP-1 injection sites, how rotation helps, and when to ask your prescriber or pharmacist.
Half-life and levels
How long medication stays in your system.
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How long does tirzepatide stay in your system?
Tirzepatide's 5-day half-life explained in plain English: how long Mounjaro and Zepbound stay in your system and why hunger returns when it does.
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How long does semaglutide stay in your system?
Semaglutide's 7-day half-life explained: how long Wegovy, Ozempic and Rybelsus stay in your system and what that means week to week.
Peptides and more than one compound
Vials, reconstitution and running more than one thing.
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Retatrutide tracker: logging doses, levels and a custom half-life
Keep a clean record of a retatrutide protocol: doses, sites, an estimated level curve with its own half-life, and an export for your clinician.
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Peptide reconstitution: how many units to draw
How to work out syringe units after reconstituting a peptide vial: concentration maths step by step, with a worked example and common mistakes.
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Can I track two peptides at once?
How to track a GLP-1 alongside TRT, NAD+ or a second peptide: separate schedules, reminders, level curves and site history in one app.
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How to track a peptide cycle: days on, days off and several compounds at once
How to keep track of peptide cycles such as 5 days on 2 off or 8 weeks on 4 off, running several compounds on different schedules, and vial supply.
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TRT injection tracker: schedules, sites and vials, alongside a GLP-1
How to track testosterone injections: twice-weekly and every-3.5-days schedules, IM and sub-Q site rotation, vial supply, and running TRT alongside a GLP-1.
Keep the record without thinking about it
PepLevel logs doses and sites, reminds you on dose day and estimates what is in your system. Coming soon to the App Store.
Get PepLevel