The medicine
What is a made-to-order medicine?
A drug company supplies finished products; compounding instead means making up medicine to meet an order.
How is a made-to-order medicine different?
U.S. medicine reviews fall to FDA (Food and Drug Administration).
There was no FDA approval for compounded medicines as of September 26, 2026.
Their sale begins without FDA having checked how well they work, whether they are safe, or their quality.
Why might one be used?
According to FDA, compounding may serve a patient whose needs an approved medicine cannot meet, or for whom that medicine is unavailable to buy.
An example is a patient who cannot use a dye in a ready-made medicine.
Ask which need the change would address in your case.
What limits apply to compounding?
As of September 26, 2026, federal law limits making copies of available ready-made drugs on a regular basis or in unusually large amounts.
FDA calls it a copy if the main ingredient matches and it is taken the same way.
The amount of drug must also be the same, much alike, or easy to use in place of the ready-made drug.
The prescriber must decide whether a change is important for that patient; a change meeting that test can fall outside the copy restriction.
Being cheaper alone does not count as that kind of difference.
Ask the prescriber to describe the alteration and explain how your own care would benefit from it.
Are weight-drug shortages still a reason?
FDA listed neither semaglutide injections nor tirzepatide injections as being in national shortage on September 26, 2026.
A stock problem at your nearby pharmacy does not itself amount to a national shortage listed by FDA.
Ask, “What rule allows you to make this medicine for me now?” Ask for the name and date of that rule. An old claim about a shortage does not answer that question.
What about other weight drugs?
For retatrutide and cagrilintide, FDA’s position as of September 26, 2026 is that federal law permits neither substance to be used in compounding.
FDA has not determined that either substance is safe and effective for treating any condition.
What does Massachusetts add?
The word sterile tells you there are no living germs.
Under state law as of September 30, 2026, a Massachusetts retail pharmacy making sterile medicines needs an extra licence renewed each year.
State inspection is needed for renewal, and the board also makes unannounced visits.