What does 1 tab po sig mean?

"1 tab po sig" is a medical abbreviation often found in prescriptions, where "1 tab" refers to one tablet, "po" means "per os" or "by mouth," and "sig" is short for "signa," which means "to label" or "to write." Therefore, it instructs the patient to take one tablet by mouth as directed. It's important for patients to follow the specific dosing instructions provided by their healthcare provider.