Dose-equivalence by class
ACE inhibitor equivalent-dose calculator
Equivalent doses
Doses by WHO defined-daily-dose ratio relative to Ramipril 5 mg — a low-confidence approximation, not true equipotency.
- ≈100mg/day
- ≈20mg/day
- ≈20mg/day
- ≈8mg/day
Sources (3)
WHO Collaborating Centre for Drug Statistics Methodology (2024) (opens in a new tab) ATC/DDD Index, group C09AA (ACE inhibitors, plain). WHO ATC/DDD Index.
WHO Collaborating Centre for Drug Statistics Methodology (2024) (opens in a new tab) DDD: Definition and general considerations. WHO ATC/DDD Index.
Fischer K, Diec S (2021) (opens in a new tab) Once- Versus Twice-Daily ACE Inhibitors for BP Control in Adults With Hypertension. Cureus.
Method review — pending
Data current as of July 2026.
Educational PK model: not clinical guidance. Confirm any dose change with a prescriber or pharmacist.