Medication Supply Duration Calculation
A prescription of 180 tablets of Viberti 100 mg taken twice daily will last 90 days, which equals 3 months.
Calculation Breakdown
The arithmetic is straightforward:
- Dosing regimen: 1 tablet twice daily = 2 tablets per day
- Total supply: 180 tablets
- Duration: 180 tablets ÷ 2 tablets/day = 90 days
Monthly Equivalent
Since most months have approximately 30 days:
- 90 days ÷ 30 days/month = 3 months supply
Important Clarification
Based on the FDA drug label information provided 1, Viberti appears to be indicated for a different dosing schedule (2 tablets 3 times daily until symptoms subside), which suggests this may be an acute treatment medication rather than a chronic maintenance therapy. However, your prescription specifically states "one tablet twice daily," so the calculation above is correct for your prescribed regimen.
Practical Considerations
- This 90-day supply is a standard quarterly refill period
- Patients should plan refills approximately 1-2 weeks before running out to avoid gaps in therapy
- If taking cilostazol (which Viberti may contain based on context), the typical maintenance dose is indeed 100 mg twice daily 23
The prescription as written provides exactly 3 months of continuous therapy when taken as directed.