This is medical shorthand for a prescription. Without abbreviations, this is "1 tablet q 12 hours per os". In plain language, this means take one tablet every 12 hours by mouth (orally, ie, swallow it).
1 time in the morning
Take 1 tab po q12 h
PO means by mouth QD means daily so this means to take 1 tablet by mouth daily
take 1 tablet at bedtime
T,1,TA,PO,BID T= TAKE 1=QUANTITY TA = TABLET OR CA FOR CAPSULE PO = BY MOUTH BID = TWICE DAILY; QD FOR ONCE DAILY TID FOR THREE TIMES AND QID OR Q6H FOR FOUR TIMES AND Q4H FOR EVERY FOUR HOURS. Make sure that what you write down is within normal medical practice or the pharmacy will make a call to the doctor asking for clarification.
10-25 mg tab or caps 2 PO inset 1 after every loose stool
hora somni....before bedtime
In traditional prescription writing, you write ii tab tid.
To 1t pod
On a prescription, it means 1 by mouth (orally).
PO - per os, orallySID - once a daysee related link below
1 po means one by mouth (swallowed). Q is an abbreviation meaning every. 1 po q is an incomplete statement; normally, a time interval would follow the q, so that "1 po qd" is one by mouth daily, and "1 po q6h" means 1 by mouth every 6 hours.