HealthRX.com · Printable symptom log
Injection site reaction tracker with measurements and warning signs
Note the product, its source and lot, then check the site twice a day: how wide the redness is, whether it has crossed a pen line, and any warmth, drainage, itching or fever. Emergency and same-day warning signs from MedlinePlus are printed beside the log, with questions for the clinician.
The product and the injection
Product name and who prescribed or supplied it
FDA-approved product, compounded, or other
Lot number and expiry or beyond-use date
Needle size and the site used
Date and time of the injection
Morning and evening checks of the site
Draw around the edge of the redness with a pen at the first check, then measure across its widest point each time.
| Date and time | Redness across (cm) | Still inside the pen line? | Warm, painful or draining? | Itch or hives | Temperature | Photo? |
|---|---|---|---|---|---|---|
Call 911: possible anaphylaxis
- Difficulty breathing, wheezing, or trouble swallowing.[1]
- Swelling of the face, eyes or tongue.[1]
- Hives with dizziness or light-headedness, or loss of consciousness. These symptoms often come on within seconds or minutes.[1]
Contact a provider right away: possible skin infection
- Redness that gets bigger, with pain or tenderness, or fever with chills.[2]
- Red streaks spreading from the area, or blisters over it.[2]
- Drainage of any kind, fever, pain, redness or swelling at the site.[3]
From approved peptide labels
- Tesamorelin (Egrifta): site reactions in 25% of people on the drug and 14% on placebo in the first 26 weeks.[4]
- Semaglutide (Wegovy): rotate injection sites with each dose.[5]
Questions for the clinician
- Does this look like irritation, infection or an allergy?
- Should I stop injecting until it has been checked?
- Could the product, its diluent or the way it was stored be the cause?
- If there is pus, should a sample be taken?
- How do I report this reaction, and to whom?
Sources for the facts on this sheet
- U.S. National Library of Medicine. Anaphylaxis: MedlinePlus Medical Encyclopedia. Accessed 2026-10-18. https://medlineplus.gov/ency/article/000844.htm
- U.S. National Library of Medicine. Cellulitis: MedlinePlus Medical Encyclopedia. Accessed 2026-10-18. https://medlineplus.gov/ency/article/000855.htm
- U.S. National Library of Medicine. Skin abscess: MedlinePlus Medical Encyclopedia. Accessed 2026-10-18. https://medlineplus.gov/ency/article/000863.htm
- Theratechnologies Inc., via DailyMed. Egrifta SV (tesamorelin) for injection, for subcutaneous use: prescribing information. Effective 2026-07-29. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=3d783378-b02d-4f19-99dd-0fc91a042224
- Novo Nordisk, via DailyMed. Wegovy (semaglutide) injection and tablets: prescribing information. Effective 2026-06-18. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=ee06186f-2aa3-4990-a760-757579d8f77b
This sheet records information for a conversation with your prescriber or pharmacist. It does not replace their instructions or the medication's prescribing information.