math calculations with tablets tabs

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math calculations with tablets (1)

What are the total quantity and the total days supply for the following Rx:
GGPE 900/25
#30
i po bid
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The doctor has prescribed Guaifenesin/Phenylephrine 900/25
The total quantity is 30 tablets as stated by the doctor.
The sig says: take 1 tablet by mouth twice daily
The patient will take 2 tablets per day.
The total days supply will be 30 divided by 2 which is 15 days.

Calculate the total quantity and the total days supply for the following Rx:
Griseofulvin 250mg
#30
i bid
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The doctor has prescribed 30 tablets of Griseofulvin 250mg
But, the pharmacist will very likely dispense the brand-name drug Gris-Peg 250mg tablets.
The total quantity to be dispensed is 30 tablets as stated by the doctor.
The sig says: take 1 tablet by mouth twice daily
In other words, the patient will take 2 tablets per day.
The total days supply will be 30 divided by 2 which is 15 days.

Calculate the total quantity and the total days supply for the following Rx:
griseofulvin 500 mg
#50
i qpm after dinner
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The doctor has prescribed griseofulvin 500 mg, but the pharmacist will very likely dispense the generic drug Grifulvin V micro 500mg tablets.
The total quantity to be dispensed is 50 tablets as stated by the doctor.
The sig says: take 1 tablet by mouth every evening after dinner
The total days supply is 50 days.

Calculate the total quantity and the total days supply for the following Rx:
Ultram 25 mg
sig: 1 tab bid #60 tabs
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The sig says: take 1 tablet by mouth twice a day
In other words, the patient will take 2 tablets daily.
The doctor has prescribed 60 tablets.
So, the days supply will be 60 / 2 which is 30 days.
But, there is no Ultram 25mg
In this case, the pharmacist will dispense Ultram 50mg, but in fact most pharmacists will dispense the generic version Tramadol 50mg
Note that the strength increased from 25mg to 50mg and thus the dosage and the quantity will have to decrease by half.
So, the sig changes to: 1/2 tab bid
In other words, the new sig will say:
take half tablet by mouth twice a day for 30 days
Now, the total quantity to be dispensed will be 1/2 * 2 * 30 which is 30 tablets.
The days supply remains 30 days.
It is worth noting that some pharmacists may want to call the doctor in order to check the strength.

Calculate the total quantity and the total days supply for the following Rx:
Myfortic 1080 mg po bid
QS: 1 month supply
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The sig says: take 1 tablet by mouth twice daily for one month
Nevertheless, there is no Myfortic 1080 mg. So, the pharmacist will dispense Myfortic 360mg
So, 1080 = 3 * 360 which means that the patient will take 3 tablets of Myfortic 360mg
The new sig will say: take 3 tablets by mouth twice daily for 30 days
The quantity to be dispensed will be 3 * 2 * 30 which is 180 tablets.
The days supply is 30 days as stated by the doctor.

What are the total quantity and the total days supply for the following Rx:
Prevacid 30 mg ODT
#30
take 1 tab qam
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The doctor has prescribed the brand-name drug Prevacid 30 mg solu tabs. These tablets are called ODT, that is, orally disintegrating tablets.
The total quantity to be dispensed is 30 tablets as stated by the doctor.
The right sig directions should say: place 1 tablet on the tongue every morning and let dissolve before swallowing
Since the patient will use 1 tablet daily, the total days supply is 30 days.

Calculate the total quantity and the total days supply for the following drug:
Lactinex tablets; QTY = 1 box; 1 refill
Sig: 1 AC TID PRN DIARRHEA
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After looking up in the drug inventory list, we see the following information:
Lactinex tablet chewable; package size = 50
So, the total quantity is 50 tablets and therefore 1 bottle has 50 tabs.
The sig says: chew and swallow one tablet by mouth before meals three times a day as needed for diarrhea
So, the patient will chew 1 tablet * 3, which is 3 tabs per day.
The total days supply will be 50 tabs divided by 3 tabs which is 16 days.
Lactinex is an over-the-counter medication, that is, it does not require a prescription, but it must be kept in the refrigerator.

What are the total quantity and the total days supply for the following Rx:
date: Feb/24/2010
Diflucan 200 mg tab
1 daily
dispense: QS
start date: Feb/25/2010
end date: Mar/11/2010
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The doctor has prescribed the brand-name drug Diflucan 200 mg tablets, but the pharmacist will very likely dispense the generic version Fluconazole 200mg tablets.
The sig says: take 1 tablet by mouth daily
The doctor wants the patient to start taking the medication on Feb/25/2010 and to end taking the medication on Mar/11/2010. The number of days between Feb/25 and Mar/11 is 15 days.
In turn, the patient will take 1 tablet daily for 15 days. So, the total quantity to be dispensed is 15 tablets and the total days supply is 15 days.