You receive and order for phenobarbital gr 1/2 po. The phenobarbital you have on hand comes as 15mg/tan Rx? And S? Show all work

Answer 1

To find the appropriate dose of phenobarbital in grams for this order, we need to convert the given dose from milligrams (mg) to grams (g).

Given:
Phenobarbital on hand: 15mg/tan Rx
Desired dose: gr 1/2 po (gr means grains, and po means by mouth)

1 grain (gr) is equal to 64.79891 milligrams (mg).

Converting gr 1/2 to milligrams:
1/2 gr = (1/2) * 64.79891 mg
= 32.39945 mg

To convert mg to grams, divide the dose by 1000:
32.39945 mg ÷ 1000 = 0.03239945 g

Therefore, the order is for 0.03239945 grams of phenobarbital.