Individuals prescribed Spironolactone, a medication frequently used for heart conditions and high blood pressure, are being advised to avoid or reduce intake of specific high-potassium foods. While commonly prescribed for cardiovascular issues, Spironolactone is also used “off licence” in the UK to treat acne, female pattern hair loss, and hirsutism in women, according to the British Association of Dermatologists (BAD).
The NHS confirms that Spironolactone is a widely used and generally safe medication for acne management, offering an alternative to antibiotics. A 2022 study demonstrated its effectiveness and safety for women with persistent acne.
However, caution is required when taking Spironolactone due to the risk of elevated potassium levels, a condition known as hyperkalemia. The NHS warns against using low-sodium salt substitutes like Lo-Salt, which contain high potassium levels, as they can cause potassium to rise dangerously. Patients are also advised to limit foods rich in potassium including bananas, avocados, pulses, nuts, and salmon.
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While Spironolactone does not cure acne, it helps manage the condition and can lead to significant improvement over time. Treatment usually lasts six months, with many women noticing improvements after three months. Dosages typically start at 50 mg per day, increasing to 100 mg based on tolerance and blood test results. Tablets should be taken whole with water after meals.
Patients should inform their doctor of any other medications they are taking before starting Spironolactone, as drug interactions may occur. Anyone concerned about side effects or dietary restrictions should consult their GP or dietitian for tailored advice.