What is the equivalent of 1/4 grain of Codeine in milligrams?

To convert grains to milligrams, it is essential to know the conversion factor: 1 grain is equivalent to approximately 64.8 milligrams. To find the equivalent of 1/4 grain of Codeine, the calculation would be as follows:

1. First, calculate the milligrams in 1 grain:

• 1 grain = 64.8 mg.

2. Then, to find the milligrams in 1/4 grain:

• (1/4) grain = 64.8 mg / 4 = 16.2 mg.

However, in pharmacy practice and according to standard references, 1/4 grain of Codeine is commonly rounded and accepted as approximately 15 mg. Therefore, when looking for the closest option that reflects accepted clinical practice, 15 mg is taken as the standard equivalent.

This understanding highlights that while the precise conversion may yield slightly different numbers, pharmacological practice often relies on established equivalencies that aid in practical application, especially when it comes to dosages in medication administration.