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Dihydropyridine calcium-channel blocker

Nifedipine

Brand names: Adalat, Coracten, Adipine

Adult dose

Dose: Hypertension MR: 20–60mg BD or 30–90mg OD per brand. Tocolysis (off-label): 20mg PO loading, then 10–20mg every 6–8h
Route: PO
Frequency: OD-BD (MR)

Clinical pearls

  • Hypertension (MR), Raynaud's, hypertensive crisis in pregnancy (per NICE NG133), tocolysis (off-label per NICE NG25)
  • Brand-specific MR formulations not interchangeable
  • Avoid immediate-release for hypertension (rebound tachycardia risk)

Contraindications

  • Cardiogenic shock
  • Unstable angina
  • Recent MI
  • Severe aortic stenosis
  • Acute porphyria

Side effects

  • Ankle oedema
  • Headache
  • Flushing
  • Reflex tachycardia
  • Gingival hyperplasia

Interactions

  • Grapefruit juice
  • Strong CYP3A4 modulators
  • β-blockers (negative inotropy in HF)

Monitoring

  • BP
  • HR

Reference: BNF; NICE NG136/NG133/NG25; https://bnf.nice.org.uk/drugs/nifedipine/. Verify against your local formulary and the latest BNF before prescribing.

Related

Curated clinical cross-links plus same-class fallbacks.