Loop diuretic + potassium-sparing
Co-amilofruse
Brand names: Frumil, Lasoride
Adult dose
Dose: 1 tab (5mg amiloride / 40mg furosemide) OD; up to 2 tabs/day
Route: PO
Frequency: OD
Clinical pearls
- Heart failure when furosemide alone causes hypokalaemia
- Monitor K+ and renal function
Contraindications
- Hyperkalaemia
- Anuria
- Addison's disease
- Severe renal impairment
Side effects
- Hyperkalaemia
- Hyponatraemia
- Hypovolaemia
- Postural hypotension
- Gout
Interactions
- ACEi/ARB/spironolactone (hyperkalaemia)
- NSAIDs (reduced effect, renal)
- Lithium toxicity
- Digoxin (toxicity if hypokalaemia rare here)
Monitoring
- U&E
- Weight
Reference: BNF; https://bnf.nice.org.uk/drugs/co-amilofruse/. Verify against your local formulary and the latest BNF before prescribing.
Related
Curated clinical cross-links plus same-class fallbacks.
Calculators
Pathways
- Acute Heart Failure · ESC 2021 Heart Failure Guidelines; NICE NG106
- NSTEMI / Unstable Angina · ESC 2020 NSTEMI Guidelines; NICE NG185
- New-Onset Atrial Fibrillation · ESC 2020 AF Guidelines; NICE NG196
- Hypertensive Emergency · ESC/ESH 2018 Hypertension Guidelines; NICE NG136
- Bradycardia Management · Resuscitation Council UK ABCDE; ESC 2021 Pacing Guidelines
- Ventricular Tachycardia / Fibrillation · Resuscitation Council UK ACLS; ESC 2022 Ventricular Arrhythmia Guidelines