- Adverse event
- An unwanted experience reported while using a medicine; the report alone does not show what caused it.
Ask about the product, not the group
Compounding is the work of preparing medicine to order.
Poor compounding can contaminate a medicine with germs, the Food and Drug Administration (FDA) warns. Its active ingredient may also be present in a larger or smaller amount than intended.
The part meant to produce a medicine’s effect is called the active ingredient.
FDA information checked: September 17, 2026.
Ask the pharmacist what written information comes with the product. Ask the clinician which unwanted effects and changes need a call.
Severe symptoms need urgent help
Life can be at risk from a severe allergic reaction, which may develop very quickly.
A swollen face or tongue, problems swallowing, or difficulty breathing can signal a severe reaction.
Get emergency help now for severe symptoms; do not wait for an online reply.