8. You receive the following prescription: R x : APAP 325 mg Diphenhydramine HCl
ID: 877702 • Letter: 8
Question
8.
You receive the following prescription:
Rx: APAP 325 mg
Diphenhydramine HCl 25 mg
Atropine SO4 0.12 mg
Caffeine 30 mg
Lactose qs
M.ft. cap #7 size 1
Diphenhydramine is available as 50 mg tablets (average weight = 112 mg) and all other ingredients are available as bulk powders. What weight of crushed diphenhydramine powder is needed to compound these capsules?
175 mg
350 mg
392 mg
440 mg
9.
How would you weigh out the active ingredient necessary to compound the following product using a Class A Prescription balance:
Rx: Scopolamine HBr 5 mg
Lactose qs
M.ft. powder packets #10
Compounding Instructions:
Weigh out ___?_____mg of scopolamine HBr
Weigh out ____?___mg of lactose
Combine scopolamine HBr and lactose using geometric dilution and weigh out ___?__mg of the dilution to use in compounding.
Record your answer as a numerical value only (no units).
10.
How would you measure out 0.5 mL of a solution if you only had a 10-mL graduate on hand?
The least measurable quantity of this instrument is ___?______mL. Using the aliquot method, this means I have an aliquot number of . Therefore, I would measure out ____?______mL of my solution and qs up to ____?____ mL with an appropriate diluent. Finally, I need to measure out _________?__________mL of the diluted solution to get my 0.5 mL of the original solution.
175 mg
350 mg
392 mg
440 mg
9.
Explanation / Answer
8. 175 mg
9. Weight out 5.001 mg for 5.0 mg scopolamineHBr
10. measure 1.0 mL of solution and dilute upto 10 mL. Then measure 5 ml of solution, to get the origina concentration of 0.5 mL solution.
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