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1. Sarah's mastiff, Samson, weighs 120 lbs. Samson cuts his tail and needs antibiotics. The vet prescribed 5 mg/kg amoxicillin BID. How many 90 mg capsules should be dispensed for 2 weeks?

a. 91 tablets
b. 84 tablets
c. 42 tablets
d. 182 tablets

Answer :

Final answer:

To calculate the number of 90 mg capsules needed, we divide the total dosage by the dosage strength of each capsule. The correct answer is 84 tablets.


Explanation:

To calculate the number of 90 mg capsules needed for 2 weeks, we need to determine the total dosage of amoxicillin required by Samson for that period. Since the vet prescribed 5 mg/kg BID, we first need to find Samson's weight in kg: 120 lbs ÷ 2.2 kg/lb = 54.55 kg (rounded to 2 decimal places).

Now, we can calculate the total dosage: 54.55 kg × 5 mg/kg × 2 times/day × 14 days = 7637.5 mg.

Finally, we divide the total dosage by the dosage strength of each capsule: 7637.5 mg ÷ 90 mg/capsule = 84.86 capsules. Since we cannot dispense a fraction of a capsule, 84 capsules should be dispensed. Therefore, the correct answer is option b. 84 tablets.


Learn more about Calculating dosage for a prescription here:

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