Frequencies

• q


  Every
• qd


  Once a day
• qod


  Every other day
• q_h


  Every_hours
• bid


  Twice a day
• tid


  Three time a day
• qid


  Four times a day
• hs


  At bed time (hours of sleep)
• ac


  Before meals
• pc


  After meals
• prn


  When needed
• ad lib


  As desired
• Stat


  immediately