Medicine review at the federal level sits with the US Food and Drug Administration, or FDA.
Ask about the product, preparation and plan
Making a medicine to order, by preparing or mixing it for a patient, is called compounding. A pharmacist or doctor does this work.
In guidance checked September 17, 2026, the FDA warned that poor compounding can leave a drug with the wrong strength or let germs get in.
Contamination means something unwanted has got into the drug, such as germs. Active ingredient means the ingredient intended to produce the drug’s effect.
FDA reports checked September 26, 2026 described people getting wrong amounts of semaglutide injections made this way. Some reports involved hospital care.
Ask the prescriber and pharmacist to explain any unclear label or instruction directly. Leave the visit knowing how to ask them again.
Get answers that relate to your own situation
- What might go wrong with this particular medicine?
- Do my other medicines, past reactions or health conditions change the plan?
- Which changes mean I need urgent help?
- Who answers a concern between visits?
- What would make us stop and reassess?
Severe allergy signs call for urgent help
MedlinePlus directs people with severe allergy signs to seek emergency care or call 911; breathing trouble and tongue swelling are among those signs.
The MedlinePlus advice was checked September 17, 2026. It says a severe allergy may start very fast, sometimes in seconds or minutes.