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Essential Math and Calculations for Pharmacy Technicians

Indra K. Reddy, Mansoor A. Khan

Chapter 8

Working with Solid Dosage Forms - all with Video Answers

Educators

Chapter Questions

Problem 1

A medication order reads "Give Tegretol $200 \mathrm{mg}$ p. o. q. 12 hours for 2 weeks." Only $100 \mathrm{mg}$ tablets are available. How many tablets should be dispensed?

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00:30

Problem 1

$\mathrm{R}$
Phenobarbital gri
$\# 42$ tablets
Sig: i tablet tid, finish all
A pharmacist had 24 tablets of phenobarbital $32 \mathrm{mg}$. After notifying the physician, he dispensed those tablets to the patient. How long would that medication last?

Ronald Prasad
Ronald Prasad
Numerade Educator
00:34

Problem 2

Doctor's order reads "Neupogen $2.5 \mu \mathrm{g} / \mathrm{lb}$." If the patient weighs $50 \mathrm{~kg}$, how much you should give to the patient to provide the prescribed dose?

Liuxi Sun
Liuxi Sun
Numerade Educator

Problem 3

Doctor's order reads "Diflucan, iistat iqd for 10 days." How many Diflucan tablets should you give to the patient?

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01:05

Problem 4

A medication order reads " $100 \mathrm{mg}$ Ultram twice a day for 2 months." If Ultram is available in a strength of $50 \mathrm{mg} /$ tablet, how many tablets should be dispensed?

Ma. Theresa Alin
Ma. Theresa Alin
Numerade Educator

Problem 5

Vioxx is available as $7.5 \mathrm{mg} /$ tablet. The doctor's order reads " 1 tablet 3 times daily for 4 weeks." How many tablets should be dispensed?

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02:23

Problem 6

A cortisone medication reads "One tablet twice a day for 3 days, then $1 / 2$ tablet twice a day for 3 days, and $1 / 2$ tablet once daily for 10 -days" for $5 \mathrm{mg} /$ tablets cortisone. How many tablets should be dispensed?

Sima Sarker
Sima Sarker
Numerade Educator

Problem 7

A medication order reads " $20 \mathrm{mg} /$ famotidine per day for 3 weeks, then 20 mg per day every other day for a month." Only $10 \mathrm{mg}$ /tablets are available. How many tablets should be dispensed for the 45 -day treatment period?

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Problem 8

Prednisone capsules $5 \mathrm{mg} /$ capsule are available. A medication order reads " $5 \mathrm{mg} 3$ times a day for 1 week, then $5 \mathrm{mg}$ twice a day for the next week, and $5 \mathrm{mg}$ once daily for another week and finally, $1 \mathrm{mg} /$ day for 10 days." How many capsules should be dispensed?

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01:13

Problem 9

A physician orders $600 \mathrm{mg}$ ibuprofen 3 times a day after meal for 3 weeks. The patient has a bottle of 500 tablets ibuprofen $200 \mathrm{mg} /$ tablets. The physician told him that he could use it instead of the prescribed ibuprofen. How many tablets of OTC ibuprofen will remain after the 3-week treatment period?

Manisha Sarker
Manisha Sarker
Numerade Educator

Problem 10

Doctor's order reads "Biaxin $500 \mathrm{mg}$ twice a day for 10 days." How many $500 \mathrm{mg}$ tablets should be dispensed?

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Problem 11

If a prescription requires a stat dose of $0.375 \mathrm{mg}$ of digoxin tablets, and the pharmacist has tablets of strength, $0.125 \mathrm{mg}$, how many of the lower strength digoxin tablets should the patient take?

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01:24

Problem 12

$\mathrm{R}_{\mathrm{x}}$
Cephalexin $500 \mathrm{mg}$
Sig. i cap tid, 10 days
If a pharmacist dispenses Keflex $250 \mathrm{mg}$ capsules, what directions should be provided to the patient?

Ivan Kochetkov
Ivan Kochetkov
Numerade Educator
01:24

Problem 13

In the above problem, how many cephalexin $250 \mathrm{mg}$ capsules should be dispensed totally?

Ivan Kochetkov
Ivan Kochetkov
Numerade Educator
01:05

Problem 14

Spironolactone tablets are available in $25 \mathrm{mg}$ strength, but a drug order comes for $150 \mathrm{mg}$ dose. How many tablets should be dispensed?

Ma. Theresa Alin
Ma. Theresa Alin
Numerade Educator

Problem 15

$\mathrm{R}$
Slow-K $10 \mathrm{mEq}$
\#20
Sig: $10 \mathrm{mEq}$ bid
If only $20 \mathrm{mEq}$ tablets are available, how many $20 \mathrm{mEq}$ tablets would you dispense as a pharmacist? Assume that the tablets can be split into halves.

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Problem 17

$\mathrm{R}$
Synthroid 100 mcg
20 tablets
Sig: i qd
If a pharmacist dispensed Synthroid 25 meg tablets, how many tablets would the patient take every day?

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Problem 18

$\mathrm{R}$
V-Cillin ${ }^{\infty} \mathrm{K}$
800,000 units tid, 5 days
If the available tablets have a strength of $250 \mathrm{mg}$, how many tablets should be dispensed? It is known that $1 \mathrm{mg}$ of penicillin $\mathrm{K}=1600$ units.

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Problem 19

Gantrisin ${ }^8$ gr L
\#14
Use as directed.
500 milligram Gantrisin tablets are available. How many tablets should be dispensed?

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Problem 20

$\mathrm{B}$
Phenergan $^{\mathbb{E}}$ tablets $12.5 \mathrm{mg}$
Dispense 14 tablets
Sig: ss qhs
If the pharmacist dispensed $25 \mathrm{mg}$ tablets of Phenergan, ${ }^{\circledR}$ how many tablets should the patient take at bedtime?

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Problem 21

A medication order reads "Give Reglan $10 \mathrm{mg}$ p.o.q. 12 hours for 2 weeks." Only $5 \mathrm{mg}$ tablets are available. How many tablets should be dispensed?

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Problem 22

Doctor's order reads "Neupogen $2.5 \mu \mathrm{g} / \mathrm{lb}$." If the patient weighs $70 \mathrm{lb}$, how much should you give to the patient to provide the prescribed dose?

Kaela Piechowicz
Kaela Piechowicz
Numerade Educator

Problem 23

Doctor's order reads "Zithromax, iistat, iqd for 5 days." How many Zithromax tablets should you give to the patient?

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01:05

Problem 24

A medication order reads " $100 \mathrm{mg}$ Ultram twice a day for 3 months." If Ultram is available in a strength of $50 \mathrm{mg} /$ tablet, how many tablets should be dispensed?

Ma. Theresa Alin
Ma. Theresa Alin
Numerade Educator

Problem 25

Vioxx is available as $7.5 \mathrm{mg} /$ tablet. The doctor's order reads " 1 tablet 3 times daily for 2 weeks." How many tablets should be dispensed?

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02:23

Problem 26

A 5 -mg cortisone medication reads "One tablet twice a day for 3 days, then $1 / 2$ tablet twice a day for 3 days, and $1 / 2$ tablet once daily for 5 days." Only $5-\mathrm{mg} /$ tablet cortisone is available. How many cortisone 5 -mg tablets should be dispensed?

Sima Sarker
Sima Sarker
Numerade Educator
01:05

Problem 27

A medication order reads " $20 \mathrm{mg} /$ famotidine per day for 15 days, then $20 \mathrm{mg}$ per day every other day for a month." Only $10 \mathrm{mg}$-tablets are available. How many tablets should be dispensed for the 45 -day treatment period?

Ma. Theresa Alin
Ma. Theresa Alin
Numerade Educator
00:58

Problem 28

Dexamethasone is available in $2 \mathrm{mg}$-tablets. A medication order reads " $2 \mathrm{mg} 3$ times a day for 1 week, then $2 \mathrm{mg}$ twice a day for the next week, then $2 \mathrm{mg}$ once/daily for another week and finally, $1 \mathrm{mg} /$ day for 10 days." How many tablets should be dispensed?

Ivan Kochetkov
Ivan Kochetkov
Numerade Educator

Problem 29

A physician orders $800-\mathrm{mg}$ ibuprofen 3 times a day after meals for 3 weeks. The patient has a bottle of 500 tablets ibuprofen $200 \mathrm{mg} /$ tablets. The physician told him that he could use it instead of the prescribed ibuprofen. How many tablets of OTC ibuprofen will remain after the threeweek treatment period?

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Problem 30

Doctor's order reads "Biaxin $500 \mathrm{mg}$ twice a day for 10 days." Only $250 \mathrm{mg}$-tablets are available. How many tablets should be dispensed and what instruction should be given to the patient?

David Collins
David Collins
Numerade Educator