Medical Abbreviation: 1 PO TID – Meaning and Usage

1 po tid = "One by mouth three times daily."

Breakdown

• 1 = one (dose unit: tablet, capsule, mL, etc.)
• po = per os (Latin: "by mouth")
• tid = ter in die (Latin: "three times a day")

Equivalent Instructions

• Take one tablet/capsule orally every 8 hours (approximately)
• Typically with meals: breakfast, lunch, dinner

Common for antibiotics, chronic disease meds, and symptomatic treatments. Always confirm exact timing with prescriber/pharmacist.