Veterinary Technician

Category - Pharmacology

If an animal requires one 1/4-gr tablet of Phenobarbital twice daily, what is the total number of milligrams per day that this animal needs?
  1. 16.2 mg
  2. 32.4 mg
  3. 64.8 mg
  4. 129.6 mg
Explanation
Answer: B - 32.4 mg. A standard 1-grain tablet of Phenobarbital contains 64.8 mg of the drug, so 1/4 grain is equivalent to 16.2 mg. The the number of milligrams that this animal would receive daily, with two dosages, is 32.4 mg.
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