Want to see if I'm on the right track with dosage calculations

Published

I've done a few homework problems and I just wanted to see if I'm doing them correctly.

Order: Vistaril 50 mg po prn 3-4 times daily

Label: Vistaril/hydroxyzine pamoate (equivilant to)

25 mg/5 ml

hydroxyzine HCl

Oral Susspension

120 ml

Give____tsp

I got 10 ml and converted it to tsp and got 2 tsp as my answer. I wasn't sure what to do with the 120 ml. I'm not bad at math....I just don't know where all the numbers go in setting up the formula.

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Specializes in med/surg, telemetry, IV therapy, mgmt.

Your answer is correct. The 120 mL is just the total amount of Vistaril/hydroxyzine pamoate that the pharmacy has sent. It is not crucial to this problem. What is important is the concentration of the medication: 25 mg/5 ml.

I worked the problem this way:

50 mg
(dose desired)
/25 mg
(dose on hand)
x 5 mL
(amount the dose on hand comes in)
/1 x 1 tsp/5mL
(conversion factor)
=
2 tsp
(amount to give)

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Specializes in psych,and detox,and Ltc.

ml= 5ml x 50mg = 10ml

25mg

10ml=2tsp

answer is 2tsps

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