Dihydropyridine (CCB) dose calculator: % of maximum
Stepwise switching guide
Starting doses from the published switch studies for each pair; no validated mg-for-mg conversion exists between dihydropyridines.
- ≈1.25mg/day
- ≈5mg/day
- ≈30mg/day
- ≈2mg/day
- ≈10mg/day
- ≈10mg/day
Sources (3)
Law MR, Wald NJ, Morris JK, Jordan RE (2003) (opens in a new tab) Value of low dose combination treatment with blood pressure lowering drugs: analysis of 354 randomised trials. BMJ.
Furberg CD, Psaty BM, Meyer JV (1995) (opens in a new tab) Nifedipine. Dose-related increase in mortality in patients with coronary heart disease. Circulation.
Toal CB, Meredith PA, Elliott HL (2012) (opens in a new tab) Long-acting dihydropyridine calcium-channel blockers and sympathetic nervous system activity in hypertension: A literature review comparing amlodipine and nifedipine GITS. Blood Press.
Method review — pending
Data current as of July 2026.