If you think you have missed a GLP-1 dose, do not use a general guide to decide whether, when, or how much to inject. Missed-dose directions can differ between medicines and can also depend on why the medicine was prescribed. Your own patient information leaflet, prescription label, and prescriber or pharmacist are the right sources for a decision about your treatment.
First, make a factual note. Record the medicine name exactly as it appears on the pack, the prescribed regimen shown on your label, the date and time you expected to inject, and when you noticed the possible missed dose. If you are not certain whether an injection was completed, write that down too. Do not guess or try to reconstruct an answer from memory.
Have your medicine leaflet and pack available when you contact your prescriber or pharmacist. Tell them whether you have already taken any action, whether you have symptoms that concern you, and whether there is a practical reason you cannot access your usual treatment advice. They can give medicine-specific instructions that match your prescription and circumstances.
Keep the outcome in your schedule record after you have received professional advice: whom you contacted, the date, and any follow-up you need. This is useful at later appointments and can prevent the same uncertainty from being repeated. It is not a replacement for the supplied instructions or a reason to make a future treatment decision without checking them.
Seek urgent medical help for severe or rapidly worsening symptoms, including severe persistent stomach pain that may spread to the back, particularly with nausea or vomiting.