We get 3 as a divisor because there are 3 increments of every 8 hours in every 24 hour period, so at that rate, it is three pills per day. While this is an as-needed prescription/sig, we calculate the days supply based on the assumption that you can take up to 3 pills as needed every day.
42 pills, divided by 3 pills per day, equals a total days supply of 14.
Patient is prescribed 10g of Glucose. The glucose is presented as a 5% solution in 500ml Saline. How much of the 5% dextrose saline solution do you need