FDA Philippines maintains a Certificate of Product Registration (CPR) list of approved pharmaceutical products that can be legally sold and marketed. The Bureau of Customs (BOC) enforces import rules at the border alongside FDA Philippines.
"Not registered" does not automatically mean "illegal." Registration determines what can be commercially distributed and marketed as a medicine. It does not create a blanket prohibition on every unregistered substance.
Filipino law schedules narcotics and certain psychotropics with criminal penalties. Most peptides fall completely outside these categories. They were never on anyone's radar as drugs of abuse or public health threats. The UN conventions focus on narcotics and psychotropics, not research peptides.