What to Track on GLP-1 Medications (The Full Picture)
*Ozempic, Wegovy, Mounjaro, and Zepbound are mentioned by name throughout this post. We are not affiliated with, endorsed by, or sponsored by any manufacturer. This is an organisational guide, not medical advice. All treatment decisions should be made with your prescribing healthcare provider.*
Starting a GLP-1 medication raises a lot of questions. Most people focus on the early ones: will the nausea be bad? Will it actually work? Am I doing the injection correctly?
The question that comes later — usually at a stall, or walking into a prescriber appointment with three months of blurry memory — is: what should I have been writing down?
Side effects are part of the picture. But they are one column in a much wider spreadsheet. The people who get the most out of GLP-1 treatment are the ones who track systematically across every category that matters: weight and body measurements, dose and titration history, protein and hydration, side effects, food and appetite patterns, and the questions they accumulate between appointments.
Here is exactly what to log, why it matters, and how to make it take five minutes per week instead of an hour.
Weight and Body Measurements
Weight is the most obvious thing to track, but how you track it makes a significant difference.
Weigh weekly, not daily. GLP-1 weight loss is not linear. A typical pattern is two to three weeks of no movement on the scale followed by a noticeable drop. Daily weighing captures water retention, food weight, and hormonal fluctuation — none of which reflect fat loss. If you weigh daily, the stalls will feel like failure even when the trend over eight weeks is clearly down. One weekly weigh-in, same morning, same conditions (after waking, before eating, after the bathroom), removes almost all of the noise.
Track measurements alongside weight. Waist, hips, and upper arm are the three most useful. Some people recompose — losing fat and gaining lean mass — in ways that don't show dramatically on the scale but show clearly in measurements. If you are also doing resistance training, measurements can be the metric that keeps you going during a scale stall.
Log your non-scale victories (NSVs) separately. Energy level, sleep quality, clothing fit, how far you walked without stopping, blood pressure readings your GP mentioned. These often improve before the scale does, and they matter to your prescriber.
Dose and Titration Schedule
This is the column most people forget, and it's the column that explains everything else.
Every time your side effects spiked, your weight stalled for longer than usual, or your appetite suppression felt weaker — there is almost always a dose event nearby that explains it. Without a log, you're trying to reconstruct that connection from memory weeks later.
Record:
- Which medication and which dose — specifics, not approximations
- Injection date (for weekly injectables) or daily dose (for oral semaglutide)
- Injection site — abdomen, thigh, or upper arm; rotating sites matters for consistent absorption
- Any dose holds or delays — a supply issue, a prescriber decision to pause, a week you missed. These show up in the data as anomalies if you don't flag them
When you do titrate to a higher dose, mark it prominently. The titration step is the event that most reliably predicts when side effects will flare, when weight loss may temporarily pause, and when your appetite suppression pattern will shift.
Protein and Hydration Targets
GLP-1 medications reduce total calorie intake significantly. That reduction is mostly appetite-driven, which means the foods that get cut are often not the ones you would choose to cut if you were thinking clearly about nutrition. Protein is the thing most at risk.
Loss of lean muscle mass alongside fat is a real outcome when protein intake falls too low. The research threshold most frequently cited is 0.8 to 1 gram of protein per pound of body weight per day — but this is a conversation to have with your prescriber or a registered dietitian, not a number to treat as prescriptive.
What you can track without any clinical knowledge:
- How many grams of protein you ate on most days this week — a rough honest estimate is enough
- Whether nausea or food aversion made protein hard to hit — this is specifically important data for your prescriber, because severe GI symptoms that are cutting into protein warrant a conversation about dose timing or rate of titration
- Water intake — GLP-1 medications can cause or worsen dehydration, particularly through constipation and reduced thirst cues. Most people on these medications are not drinking enough. Log it once per day as a rough total
Side Effects — Rated, Not Just Listed
The side-effects column should capture severity, not just presence. "Nausea: yes" is not useful. "Nausea: 3 out of 5, worst on the evening of injection day, resolved by day three, no vomiting" gives your prescriber a pattern they can act on.
Track the following each week with a 0–5 severity score:
- Nausea (note which days of the week it peaks)
- Constipation or diarrhoea
- Fatigue and energy level
- Acid reflux or heartburn
- Headache
- Appetite level — how suppressed did you feel overall? This is separate from weight, because suppression without intentional food choices does not automatically drive results
Also note anything new or unusual in a free-text field. Some side effects (hair thinning, muscle cramps, mood changes) are underreported in the moment because people are not sure they're related. Write them down; let your prescriber decide if they're relevant.
Food and Appetite Patterns
The most common cause of a stall that shows up in tracking data: appetite suppression fades in the second half of the injection cycle, and intake climbs back up in the days before the next injection.
For a weekly injectable like semaglutide or tirzepatide, most people experience the strongest suppression on days one through three after injection, with appetite returning closer to normal on days five through seven. If your injection day is Sunday, by Friday you may be eating significantly more than you were on Monday — and if Friday and Saturday eating is offsetting the earlier restriction, the weekly net can be near zero.
Tracking this does not require a detailed food diary. One line per day noting your appetite level (1–5), whether you hit your protein target, and whether you overate in the evening is enough to reveal the pattern within two to three weeks.
Also note what worked: smaller meals, eating before rather than after injection, cold or bland foods that didn't trigger nausea. These accumulate into a personal protocol, and a personal protocol only exists if you wrote it down.
Get the Free Checklist — One Page, No Sign-Up
If you want a starting point that covers all of the above without building a spreadsheet from scratch, the free GLP-1 tracking checklist is here:
Free GLP-1 Tracking Checklist — download, no sign-up required
It is a one-page organisational template, not a medical tool. Print it, fill it in weekly, bring it to appointments.
Questions for Your Prescriber
Every week, write down one thing you want clarity on at your next appointment. Do it when you think of it, not the night before you go in.
Useful categories:
- About your current side effects — Is this severity expected at this dose? Does it typically improve with time, or is it a signal to slow the titration?
- About your weight trend — You've been at the same weight for four weeks; you've documented that appetite suppression seems to fade by day five. Is a shorter injection interval an option, or is there something else to consider?
- About protein — You're consistently hitting only 60% of your target because of nausea. What does that mean for muscle retention, and is there a timing or dose adjustment that might help?
- About next steps — When do you plan to consider maintenance dosing? What does coming off the medication eventually look like?
The log is what makes these questions possible. Without it, you're describing impressions. With it, you're presenting documented trends — which leads to a different quality of conversation.
What to Bring to Each Appointment
For a 15 to 20 minute prescriber appointment, the one-page summary is more useful than the full weekly log. Specifically:
- Current weight vs. weight at the start of the period (last four to eight weeks)
- Any weeks with a dose change — and what changed in symptoms or weight around that change
- Your highest-severity side effect this period, with the week it peaked and where it is now
- Whether protein or hydration targets were consistently missed — and why
- Your top question
This is the data a prescriber can act on. "It's been going OK" is not.
The Differentiation That Actually Matters
There are dedicated GLP-1 apps — Shotsy, Glapp, and others. They work for some people. The tradeoffs: they require an account, your data lives on someone else's server, and the export formats are limited if you want to bring a summary to an appointment.
A private Google Sheet has none of those constraints. It requires no account beyond a Google account you already have. Your data stays where you put it. You can filter the last eight weeks and print a one-page summary in two minutes. You can add or remove columns as your tracking needs change. You own it entirely.
The paid tracker linked below builds on this approach: auto-calculating protein and hydration targets, a visual weight and measurement chart, a side-effect heatmap that surfaces your worst windows across the injection cycle, and an auto-generating Doctor Visit Summary you can print before each appointment — formatted for a 15-minute conversation, not a wall of spreadsheet data.
GLP-1 Weight-Loss Journey Tracker — Everyday Trackers
Start with the free checklist. If you find yourself wanting more structure after a few weeks — the charts, the auto-summary, the protein calculator — the full tracker is there when you're ready.
*This post is an organisational guide, not medical advice. Ozempic, Wegovy, Mounjaro, and Zepbound are prescription medications. All dosing and treatment decisions should be made with your prescribing healthcare provider. We are not affiliated with or sponsored by any pharmaceutical manufacturer.*