GLP-1 tracking glossary

Terms

• GLP-1 receptor agonist — A class of prescription medications that mimic the hormone GLP-1. Semaglutide, tirzepatide (a dual GIP/GLP-1 agonist), and liraglutide belong to it or are grouped with it in everyday use. Most are injected weekly; liraglutide is injected daily.
• Dose titration — The stepwise increase of a dose over weeks or months, set by the prescriber and the prescribing information. Each step has a start date; a tracker records the current dose and the history of changes so the log matches what was actually injected.
• Injection site rotation — Alternating the place of injection — abdomen, thigh, upper arm — so the same spot is not used week after week. Prescribing information for GLP-1 pens recommends rotating; a tracker can record the site with each dose and suggest the next one.
• Estimated medication level — A calculated curve showing how much medication is approximately in the body over time, based on logged doses and the drug's published half-life. It is an estimate, not a measurement; nothing is drawn from blood or sensors.
• Half-life — The time it takes for the amount of a drug in the body to fall by half. Published half-lives: semaglutide about one week, tirzepatide about five days, liraglutide about 13 hours. Half-life is the input for an estimated medication-level curve.
• Pen dose counter — The window on a multi-dose injection pen that shows the dose dialed. On pens that have one, it is the only physical record that a dose was dialed; single-dose pens have no counter.
• Food noise — An informal term for persistent, intrusive thoughts about food. People on GLP-1 medication often describe it quieting; it is not a clinical measure and is not something a tracker measures.
• Free access period (EvenDose) — In EvenDose, the 14 days of full access after setup, before a subscription is required to add new records. There is no trial mechanic and no card required; existing records stay visible afterward.
• Cash-pay — Paying for a medication out of pocket without insurance coverage. For GLP-1 medications in the US this is commonly several hundred dollars a month, which is why a wasted or doubled dose is expensive as well as unsafe.