#ab antiquo

• Ab antiguo — An old graphical or medical variant for 'ab antiquo', meaning 'from ancient times' or 'since antiquity'. In a medical context, bioethics, and clinical deontology, it is used to refer to treatment principles, ethical rules (such as the Hippocratic Oath), or therapeutic practices that have been established and recognized as valid since ancient times.
• ab antique — A medieval graphical or alternative variant for the phrase 'ab antiquo', meaning 'since antiquity'. In clinical medical language and bioethics, it refers to customs, ancestral deontological standards, or patient-care principles passed down through generations, whose moral authority is recognized due to their age.
• ab antiquo — The classical and correct Latin form for 'from ancient times' or 'since antiquity'. In toxicology, pharmacognosy, and medical ethics, it is used to emphasize that certain therapeutic effects, prohibitions (e.g., using poisons for political or medical purposes), or professional oaths have been in force and respected since the earliest times of human civilization.