This formula is used to calculate the number of tablets to be administered when given the required
dose:
| Required Dose | = Number of tablets to be given |
|
Stock Dose |
N.B. Units for required dose and stock dose must be the same.
Example
A client is ordered 150mg of aspirin. 300 mg aspirin tablets are available. How many tablets would you give?
| 150 mg | = 0.5 tablets |
|
300 mg |
Example
How many tablets containing 62.5 mcg will be required to give a dose of 0.125 mg?
Convert to same units
Convert 0.125mg to mcg.
The decimal place is moved 3 places to the right (as 1 mg = 1000 mcg).
0.125mg = 125 mcg
Place values in the formula
| 125 mg | = 2 tablets |
|
62.5 mg |
| Other Calculations | |||||
| Metric Conversions | Body Mass Index | Tablet Dosages | Fluid Dosages | IV Flow Rates | Dosage by Weight |