Topic cluster
GLP-1 Dosing, Injection Technique & Pharmacokinetics
Once a prescription is in hand, the next set of questions is operational: how do I inject correctly, how long does the medication stay in my system, how do I store it, can I travel with it, what happens if I switch from semaglutide to tirzepatide. This cluster collects every practical patient-facing dosing and administration guide, all anchored in FDA prescribing information.
10 research articles in this cluster · last updated 2026-04-08
How Long Does Semaglutide & Tirzepatide Stay In Your System?
Semaglutide has a ~7-day half-life and takes ~5 weeks to fully clear. Tirzepatide has a ~5-day half-life and clears in ~25 days. Orforglipron (Foundayo) has a ~30-hour half-life and clears in ~6 days. Here is the FDA-label pharmacokinetics for every GLP-1, what 'in your system' actually means, and what it means for surgery, pregnancy planning, and side-effect resolution.
GLP-1 Units to mg Dosage Chart: Semaglutide & Tirzepatide
Compounded semaglutide and tirzepatide are dosed in milligrams but drawn in insulin-syringe units. This is the complete unit-to-mg conversion chart for every common compounded concentration, the formula behind it, and worked answers to the most-searched dosing questions: how many units is 2.5 mg of tirzepatide, how many mg is 40 units of semaglutide, and more.
How to Inject a GLP-1: The Step-by-Step Technique Guide for Pens, Vials, and Compounded Syringes
Five thousand patients a month search 'how to inject semaglutide' or 'how to inject tirzepatide.' This is the complete step-by-step technique guide: pre-filled pen (Wegovy, Ozempic, Zepbound, Mounjaro), multi-dose vial with a regular syringe, and compounded vial with an insulin syringe. Site rotation, angle, depth, common mistakes, what a missed dose looks like.
Where to Inject Semaglutide and Tirzepatide: The Complete Patient Guide
A clear, FDA-label-cited guide to GLP-1 injection technique. The three approved injection sites (abdomen, front of thigh, back of upper arm), why patients rotate sites, what depth to inject at, and the patient-reported tricks that reduce injection-site soreness. Includes a labeled body diagram and answers every variation of 'where to inject semaglutide' and 'how to inject tirzepatide.'
How to Travel With a GLP-1: The Complete Guide for Pens, Vials, and TSA
FDA-sourced storage windows for Wegovy, Ozempic, Zepbound, Mounjaro, and Foundayo, plus TSA carry-on rules, ice pack guidance, time-zone advice, and what to do if your pen gets warm.
GLP-1 Storage Guide: Refrigeration, Travel, Expiration
The complete FDA-label-cited storage and shelf-life reference for GLP-1 weight loss medications. How long Wegovy and Ozempic last in the fridge vs at room temperature, what to do if the pen sat in a hot car, how to travel with semaglutide, when to throw out an expired vial, and how compounded GLP-1 storage rules differ from brand-name pen rules.
Tirzepatide Microdosing: Sub-Therapeutic Dose Evidence
A thousand patients a month search 'what is microdosing tirzepatide.' This is the evidence-based answer: the SURMOUNT-1 dose-ranging arms (2.5, 5, 7.5, 10 mg) tell us what each step actually produced, no formal trial has tested doses below 2.5 mg, and 'microdosing' below the FDA-approved starting dose is off-label. Includes the trial data on each dose, the harm-reduction framing for patients who already do it, and the prescriber conversation.
Microdosing Semaglutide: What the Evidence Actually Says About Sub-Therapeutic GLP-1 Use
'Microdosing' semaglutide and tirzepatide — using doses below the FDA-approved titration schedule — has become common in off-label practice. We walk through what the trial data shows about sub-therapeutic doses, why patients try it, what it can and cannot achieve, and the specific safety considerations and regulatory caveats around the practice.
Switching Between GLP-1 Medications: The Complete Protocol Guide
Can you switch from semaglutide to tirzepatide? From Ozempic to Wegovy? From Wegovy to Zepbound? From compounded to brand-name? This guide walks through every switching scenario with the recommended protocol, the washout timing, the dose mapping, and what to expect during the transition period.
How to Take Foundayo (Orforglipron): The Practical Daily Guide for the New Oral GLP-1
Exactly how to take Foundayo, the first oral non-peptide GLP-1 approved by the FDA: titration schedule, morning empty-stomach window, food pitfalls, missed doses, contraception warning, storage, and travel.