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Oedema

Oedema is visible or palpable swelling caused by excess fluid accumulating in body tissues.

Lasix

Furosemide

40 · 100mg

Furosemide 40mg and 100mg tablets, used in the management of oedema and hypertension. A loop diuretic that sharply raises urine flow.

From$0.31/ tabletView

Aldactone

Spironolactone

25 · 100mg

Spironolactone 25mg and 100mg film-coated tablets, used in the management of hypertension, oedema, heart failure and hyperaldosteronism. An aldosterone antagonist.

From$0.29/ tabletView

Diamox

Acetazolamide

250mg

Acetazolamide 250mg tablets, used in the management of glaucoma, oedema and acute mountain sickness. A carbonic anhydrase inhibitor taken by mouth.

From$0.54/ tabletView

Amiloride Tablets

Amiloride

5mg

Amiloride 5mg tablets, used in the management of hypertension and oedema. A potassium-sparing diuretic: sodium and water leave, potassium is held back.

From$0.20/ tabletView

Microzide

Hydrochlorothiazide

25mg

Hydrochlorothiazide 25mg tablets, used in the management of hypertension and oedema. A thiazide that sends sodium and water out through the kidney.

From$0.42/ tabletView

Frumil

Amiloride, Furosemide

40/5mg

Amiloride with furosemide as a 40/5mg tablet, used in the management of oedema and hypertension. A loop diuretic paired with a potassium-sparing one.

From$0.19/ tabletView

Esidrix

Hydrochlorothiazide

12.5 · 25mg

Hydrochlorothiazide 12.5mg and 25mg tablets, used in the management of hypertension and oedema. A thiazide acting on the distal convoluted tubule.

From$0.55/ tabletView

Demadex

Torsemide

10 · 20mg

Torsemide 10mg and 20mg tablets, used in the management of oedema and hypertension. A loop diuretic acting on the ascending limb of the loop of Henle.

From$0.48/ tabletView

Hygroton

Chlorthalidone

6.25 · 12.5mg

Chlorthalidone 6.25mg and 12.5mg tablets, used in the management of hypertension and oedema. A thiazide-like diuretic with a long duration.

From$0.49/ tabletView

Key points

  • Sudden one-sided leg swelling raises concern for a clot, while gradual bilateral swelling suggests venous or systemic causes.
  • Heart, kidney, liver and thyroid disease, pregnancy and several medicines can produce oedema.
  • Diuretics help fluid-overload states but can worsen dehydration or kidney function when swelling has another cause.

The listings below do not identify why fluid has accumulated; examination, organ function and medication review should guide treatment.

Finding the pattern

Location, symmetry, onset, pitting, breathlessness and weight change provide clues. Urine, kidney and liver tests, heart assessment or venous ultrasound are selected accordingly. Lymphoedema may become firm and non-pitting, while infection usually adds warmth and pain.

Treating the cause

Heart-failure congestion may need diuresis, while venous swelling benefits from movement, elevation and selected compression after arterial assessment. Lymphoedema uses specialist compression and skin care. Stopping a culprit medicine or treating protein loss may be more useful than escalating a water tablet.

When to seek urgent care

Seek emergency care for swelling with severe breathlessness, chest pain, fainting or coughing blood, or a leg that becomes suddenly painful, pale, cold or markedly one-sided.

Further reading