A pharmacy may prepare a drug for a patient's need. That still leaves a key question: does this drug fit the rules?
The myth to test
Thinking a prescription makes any ingredient allowed.
Pharmacies must also meet the ingredient rules
Compounding means preparing medicine from ingredients instead of supplying a finished drug-company product. That preparation may be done by a pharmacist, a doctor or a registered facility, as the US medicines agency (FDA) describes.
As of October 1, 2026, ipamorelin failed each of the legal ingredient conditions described below for pharmacies making medicine for individual patients.
Larger registered facilities prepare batches of medicines under a separate part of the law.
Ipamorelin was also absent from the allowed-ingredient list for those larger facilities on October 1, 2026.
What FDA approval would mean
As of September 26, 2026, medicines made by compounding were not FDA-approved.
Before sale, they do not undergo FDA checks of quality, benefit or harm.
What the law asks
The law for ordinary pharmacies making medicine for a named patient is called 503A, after its section number.
As of September 26, 2026, these are the ingredient conditions under that law.
Does an official drug-quality standard exist for the ingredient? If so, the ingredient must meet that standard.
If no standard exists, is the ingredient part of an FDA-approved drug? That is the next way it can qualify.
If there is no standard and it is not part of an approved drug, the ingredient must be on the 503A allowed list.
How that applies here
The two versions are plain ipamorelin and ipamorelin acetate. Acetate names a different chemical form, which FDA treats as a separate ingredient.