by mouth

Latin instructions, “per os”; referring to the administration of a particular drug by mouth.

Usage of plain-English instruction is preferred from all perspectives, including informed consent and liability reduction.

References in periodicals archive ?

A simple trip to the dentist at least once a year could significantly reduce the number of deaths caused by mouth cancers.

Silent killer that people are unaware of put in spotlight; HEALTH Reporter HELEN RAE finds out why mouth cancer is something we should all be talking about

Warning signs include ulcers that don't heal and red and white patches in the mouth, says Alison Lowe THE number of people in the UK affected by mouth cancer is on the increase and the condition kills almost half of all sufferers.

Detecting mouth cancer early can save your life

Category 3: Anyone who is classified as "NPO" (nothing by mouth).

Preventing aspiration pneumonia in at-risk residents

It can also be aggravated by mouth breathing, alcoholic beverages, spicy foods, and smoking.