Why does product quality matter?
Food and Drug Administration (FDA) letters to sellers explain why a shot needs special care: it puts a product directly into the body. This gets past some of the body’s protection against germs and harmful substances.
Compounding means preparing medicine to order. If it is done poorly, the medicine can contain dirt or germs, or the amount of the ingredient meant to work can be too high or too low.
Does calling it pure settle this?
Ask who made the finished product and what quality standards apply. A claim on a sales page is something to check.
FDA cautions that a convincing-looking web page can hide an unsafe pharmacy.
Are unwanted effects the same for each medicine?
Unwanted effects depend on the exact medicine. An injection can leave a sore or red spot where the needle went in. How often that happens differs between medicines, even approved ones.
Ask the health professional to explain the unwanted effects of the exact product under discussion.