Urinary alkaliniser / micro-enema
Sodium citrate
Brand names: Cymalon, Cystopurin, Micralax (enema)
Adult dose
Dose: Cystitis: 4g sachet TDS x48h. Micro-enema: 5mL PR PRN
Route: PO/PR
Frequency: PRN
Clinical pearls
- Symptomatic relief uncomplicated cystitis (per NICE NG109 — short-term)
- Per RCOG/NICE: pregnancy heartburn alternative
Contraindications
- Hypertension
- Severe HF
- Severe renal impairment
- Hyperkalaemia (combined products)
Side effects
- GI upset
- Hypernatraemia
- Local irritation (PR)
Interactions
- Quinolones
- ACEi/ARB
- Lithium
Reference: BNF; NICE NG109; https://bnf.nice.org.uk/drugs/sodium-citrate/. Verify against your local formulary and the latest BNF before prescribing.
Related
Curated clinical cross-links plus same-class fallbacks.
Calculators