Question

How many capsules, each containing 20mg of sodium pentobarbital, should be used to provide the sodium pentobarbital needed in preparing the prescription?

-Aminophylline 500 mg

-Sodium pentobarbital 75 mg

-Carbowax base ad 2 g

Answer 1

Given, each capsule containing 20 mg of sodium pentobarbital.

Hence, strength of each capsule = 20 mg

Prescription:-

-Aminophylline 500 mg

-Sodium pentobarbital 75 mg

-Carbowax base ad 2 g

Number of sodium pentobarbital capsule needed to prepare prescription = prescribed amount / strength of each capsule

= 75 mg/20 mg

=3.75

=4 [ rounded to nearest whole number]

Therefore, 4 capsules should be used to provide the sodium pentobarbital needed in preparing the prescription.