Problems and urgent help
Know where to take a concern about a medicine
Keep the medicine’s name and pharmacy details close to the care plan. Ask who can answer questions after the visit.
Severe symptoms need urgent help
Anaphylaxis means a severe allergic reaction; MedlinePlus treats it as an emergency that can threaten life. Symptoms often appear very fast, within seconds or minutes.
For severe symptoms, MedlinePlus directs readers to 911 or their local emergency number. It lists breathing problems and swelling of the tongue as severe warning signs.
This is a cue to seek urgent help, not a way to identify the cause from a web page.
Ask about the exact product
Compounding is mixing or changing ingredients to make a medicine for a patient. The FDA links mistakes in that preparation with germs in the medicine, or strength that is too low or too high.
In reports reviewed in September 2026, the FDA described dosing mistakes involving compounded semaglutide injections; some reports involved hospital care.
If the written instructions are unclear, ask the prescriber or pharmacist to resolve the question before using the medicine. Keep any change to the instructions in writing.
Storage instructions vary by product; a rule that every peptide needs refrigeration would be wrong.
A report is another step
Patients can report a suspected medicine problem to MedWatch, the FDA’s reporting program.
An entry in that system is not proof of cause, and cannot show how likely a problem is.