GLP-1 medication tracking

What are GLP-1 medications?

GLP-1 stands for glucagon-like peptide-1 — a hormone your body naturally produces after eating. GLP-1 medications mimic or enhance this hormone, helping regulate appetite and blood sugar levels.

In plain terms: they help you feel full sooner, reduce cravings, and support more consistent weight loss. They're prescribed by doctors and are taken by injection (or tablet, for some medications) on a weekly or daily schedule.

Supported medications

DayByDay supports all major GLP-1 and GIP/GLP-1 medications. If yours isn't listed, you can enter it manually.

• ✦Ozempic (semaglutide, weekly injection) — type 2 diabetes and weight management
• ✦Wegovy (semaglutide, weekly injection) — higher-dose weight management
• ✦Mounjaro (tirzepatide, weekly injection) — type 2 diabetes
• ✦Zepbound (tirzepatide, weekly injection) — weight management
• ✦Saxenda (liraglutide, daily injection) — weight management
• ✦Rybelsus (semaglutide, daily tablet) — type 2 diabetes
• ✦Other — enter any medication name manually

Logging a dose

Tap the GLP-1 tab, then tap the + button. Select your medication, enter the dose amount in milligrams, and pick the injection site. You can also add notes — useful for tracking how you felt after a dose.

1. 1Tap the GLP-1 tab.
2. 2Tap the + button in the top right.
3. 3Select your medication from the list (or type a custom one).
4. 4Enter the dose amount in mg.
5. 5Select the injection site (abdomen, thigh, upper arm, etc.).
6. 6Add optional notes about how you felt.
7. 7Tap Save.

The medication level indicator

The large indicator at the top of the GLP-1 tab shows an estimate of how much medication is currently active in your system. It rises after an injection, peaks at the expected absorption window, and gradually falls as your body processes it.

This is calculated using standard pharmacokinetic data for each medication — things like half-life and typical absorption curves. It's a general estimate to help you understand where you are in your dosing cycle.

Next dose countdown

The countdown ring shows exactly how long until your next scheduled dose. It counts down based on the interval you set for your medication (typically 7 days for weekly injections, or 24 hours for daily ones).

When you're within 24 hours of your next dose, the ring changes color to remind you. Log your dose when you take it and the countdown resets automatically.

Injection site rotation

Rotating injection sites is important — injecting the same spot repeatedly can cause lipodystrophy, a hardening of the tissue under the skin that affects absorption. DayByDay tracks where you've injected and suggests the next site in the rotation.

Common sites are the abdomen, left and right thighs, and the upper arms. DayByDay rotates through these in order, but you can always override the suggestion.

Titration timeline

Most GLP-1 medications are started at a low dose and gradually increased over several months — a process called titration. DayByDay tracks your dose changes over time in a visual timeline so you can see your full titration journey.

This is useful to share with your healthcare provider at check-ins, so they can see exactly when you moved to each dose level and how you responded.

Side effect logging

Nausea, fatigue, and digestive discomfort are common when starting or increasing your dose. Tap Add note when logging a dose to record how you felt. This builds a diary of your side effect history that you can share with your provider.

Multi-medication support

If you take more than one GLP-1 medication — or you switched medications and want to track your old one alongside the new one — DayByDay supports multiple medications at the same time. Each one gets its own level indicator and countdown.