Simple Arithmetic Calculation
You need 30 tablets total for a 10-day course when taking one tablet three times daily.
Calculation
The math is straightforward:
- 1 tablet × 3 times per day = 3 tablets per day
- 3 tablets per day × 10 days = 30 tablets total
This dosing pattern (three times daily for 10 days) is commonly used across multiple medication classes. For example, the malaria treatment guidelines show similar regimens: atovaquone-proguanil requires 3-4 tablets per day for 3 days 1, and various antibiotic regimens use three-times-daily dosing 2.
Practical Considerations
Ensure you dispense at least 30 tablets to complete the full course. Underdispensing is a common cause of treatment failure, particularly with antibiotics where incomplete courses can contribute to resistance.
When counseling patients on three-times-daily regimens:
- Space doses approximately 8 hours apart (e.g., 8 AM, 4 PM, midnight)
- Research shows that three-times-daily regimens have lower compliance (91%) compared to once-daily regimens (98%) 2
- The longest interdose interval typically occurs overnight (>13 hours on average), which may affect drug levels 2
For medications requiring consistent therapeutic levels, consider whether a once-daily or twice-daily alternative exists, as these have significantly better adherence rates and timing compliance 2.