A drug code identifies an entry
A National Drug Code, often shortened to NDC, identifies a product listed in the FDA's directory.
When checked on September 28, 2026, the thymosin alpha-1 entries were raw-ingredient powders, rather than finished medicines.
The listing category is entered by the business that lists the product; it is not an FDA decision to approve it.
Help to develop a medicine is not approval
The FDA has a special status that offers help to people developing a medicine. That help does not prove the medicine works or give permission to sell it.
As of September 28, 2026, the FDA database recorded this support for thymalfasin, but none of those entries had led to an approved medicine.
FDA record of help for medicine developers European regulator's explanation of this support
Match the source to the question
A study listing in the government's research database records planned or ongoing work. It does not show that the treatment helped.
For approval, ask for the product's approval record. For benefit, ask for the study's result and who was studied.
For an ingredient rule, ask for the rule and its date. These are different questions, and each needs its own answer.
Government list of research studies FDA review of this peptide