HOW TO CALCULATE DAY SUPPLY

 

INSULIN: 1 ML = 100 UNITS                             

EX) HUMULIN N U-100                                   

     SIG: 35 U SQ DAILY                                        

    QUANITY: 10 ML (1000 U)                          

     1000 / 35= 28 DAYS

                                               

 

EAR / EYE: 20 DROPS = 1 ML

EX) SIG: 5 GTTS AD QID X 7D

     QUANITY: 10 ML

 10 ML (STOCK BOTTLE) X 20 (20/ML)

     = 200 / 20 DROPS (SIG) = 10 DAYS

 

 

INHALERS: VARY ON ACTUATIONS NUMBERS

EX) ATROVENT (HAS 200 ACTUATIONS)

SIG: INHALE 2X Q12H PO

200 / 4 (SIG) = 50 DAYS

 

 

LIQUID: VARIES

EX) SIG: i TSP QID PRN FOR COUGH & COLD

QUANITY: 4 OZ (120 ML)

5 X 4 = 20 (SIG)  THEN  120 ML / 20 ML = 6 DAYS

*TO FIND OUT WHAT OZ BOTTLE TO USE JUST DIVIDE THE QUANITY TO 30 ( 120 ML / 30 = 4 OZ BOTTLE )*

 

 

OINTMENT / CREAM: VARIES

EX) SIG: NYSTATIN SKIN OINTMENT (100,000U PER GRAM)

             APPLY TO DIAPER AREA QID

 

*DAY SUPPLY VARIES DEPENDING HOW MANY TIMES THEY WILL APPLY ON SKIN AND BY LOOKING HOW BIG IS THE TUBE OF OINTMENT

*BASICALLY THE DAY SUPPLY WOULD BE A QUESS SO THE NYSTATIN OINTMENT WILL LAST 30 DAYS ACCORDING TO THE INFO PROVIDED

*MOST OINTMENTS AND CREAMS USUALLY LAST 30 DAYS

 


TABLETS / CAPSULES: VARIES

EX) SIG: ii TABS PO QAM,  ii TABS PO QHS

QUANITY: 60 TABLETS

 SO PATIENT WOULD TAKE 4 TABLETS BY MOUTH EACH DAY IN TOTAL

  60 TABS / 4 TABS = 15 DAYS

 


PATCH: VARIES

EX) SIG: USE AS DIRECTED

QUANTITY: 2 BOXES (ORTHO EVRA PATCH)

THERE ARE 3 SEALED PATCHES IN A BOX, THE DOCTOR WANTS A QUANTITY OF 2 BOXES FOR THE PATIENT.

** SO WE KNOW THAT THERE ARE 3 PATCHES IN 1 BOX SO THERFORE THE PATIENT WILL HAVE 6 PATCHES IN TOTAL SINCE THE DOCTOR REQUESTED 2 BOXES FOR HER.

OBVIOUSLY THE DAY SUPPLY WOULD BE 6 WEEKS SINCE THE PATIENT IS APPLYING ONE PATCH STARTING SUNDAY OF EACH WEEK EXCEPT WEEK 4 (FOR THE FIRST BOX). THE PATIENT REPEATS THE PROCESS AGAIN FOR (THE SECOND BOX).



NEBULIZER SUSPENSIONS: VARIES

EX) SIG: PULMICORT RESPULES 0.25 MG / 2ML

            i BREATHING TREATMENT BID QAM & QPM W/ NEB

QUANTITY: 10 AMPULES


 

EACH SEALED CARTON CONTAINS 30 AMPULES WITH EACH AMPULE CONTAINING 2ML. EACH SEALED ALUMINUM ENVELOPE CONTAINS 5 AMPULES.

PATIENT IS TO TAKE 1 BREATHING TREATMENT 2X A DAY EVERY MORNING AND AFTERNOON WITH NEBULIZER. IT WILL EQUAL TO 2 BREATHING TREATMENTS EACH DAY.


 

1 AMPULE HAS 2ML THEREFORE 2 AMPULES HAS 4ML

30 AMPULES (CARTON) / 2 AMPULES = 15 DAYS

EXTRA: PULMICORT RESPULES ARE SPECIFICALLY FOR CHILDREN AGES BETWEEN 12 MONTHS TO 8 YEARS OLD TO HELP THEM CONTROL ASTHMA SYMPTOMS AND PREVENT ASTHMA ATTACKS. THIS IS NOT A QUICK RELIEF MEDICATION.



 

ENEMAS (RECTAL SUSPENSIONS): VARIES

EX) MESALAMINE (5-AMINOSALICYLIC ACID) ENEMA RECTAL 4G/60ML

     SIG: INSERT i ENEMA PR QPM

QUANTITY: 420 ML

EACH ENEMA BOTTLE HAS 60 ML. THE DOCTOR IS ASKING FOR A QUANTITY OF 420 ML, SO LETS FIND OUT HOW MANY ENEMA BOTTLES WE NEED TO DISPENSE.

IF         1   BOTTLE  =   60 ML

THEN    X   BOTTLE  =   420ML   ------<  1 X 420 / 60 = 7 BOTTLES TO DISPENSE

DAY SUPPLY WOULD BE 7 DAYS SINCE DOCTOR IS ASKING TO INSERT 1 ENEMA PER RECTUM EVERY AFTERNOON.

EXTRA: ENEMAS ARE FLUIDS THAT ARE INSERT IN THE RECTUM/COLON USED TO TREAT CONSTIPATION, SO EMEMAS WORK AS A LAXATIVE. ENEMAS CONTAIN WATER & SODIUM PHOSPHATE IN LARGE DOSES TO EVACUATE/CLEANSE THE BOWELS.






MILLIGRAM DRUGS SUBSTITUTED IN MILLILITERS: VARIES


 

EX) SIG: AMPICILLIN 375 MG

            i TAB Q12H

QUANTITY: 30


 

LETS SAY FOR INSTANCE THAT THE PHARMACY DOES NOT HAVE AMPICILLIN IN TABLETS ONLY IN LIQUID (AMPICILLIN 125MG/5ML). IF IT IS OKAY WITH DOCTOR TO SUBSTITUTE THE PATIENT  MEDICATION IN LIQUID THEN HERE IS HOW WE SOLVE THIS.

:FIRST LETS SEE HOW MANY MG DOES A QUANTITY OF 30 TABLETS OF AMPICILLIN HAVE:

IF          1 TAB  =  375 MG

THEN     30 TAB =     X         ----< 30 X 375 / 1 = 11250 MG


:LETS FIND OUT HOW MANY ML PER DOSE THE PATIENT NEEDS:


IF          125 MG = 5 ML

THEN      375 MG =  X      ---< 375 X 5 / 125 = 15 ML TO GIVE PATIENT


:NOW LETS FIND OUT THE FULL LIQUID QUANTITY TO DISPENSE:


IF          125 MG    =  5 ML

THEN     11250 MG  =   X     ---< 11250 X 5 / 125 = 450 ML IN TOTAL


Q12H / EVERY 12 HOURS> MEANS TO TAKE MED  ( 24 / 12 = 2X A DAY)

SO THE PATIENT WILL TAKE 15 ML OF AMPICILLIN TWICE A DAY, THE DAY SUPPLY WOULD BE 450 ML / 15 ML = 30 DAYS