by mouth

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.
Anyone can be affected by mouth cancer, whether they have their own teeth or not.
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.
It can also be aggravated by mouth breathing, alcoholic beverages, spicy foods, and smoking.
Still, if anyone could ever have used a full monty, it's the dunderheaded blokes of ``Nil by Mouth.