Spironolactone
Aldactone
Revisione paritaria di Sid DajaniUltimo aggiornamento di Michael Stewart, MRPharmSUltimo aggiornamento 30 Aug 2022
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Spironolactone is a diuretic, also known as a 'water tablet'.
It will make you go to the toilet more often to pass urine.
The most common side-effect is a mild stomach upset. This is not usually troublesome.
In questo articolo:
About spironolactone
Tipo di medicinale | Aldosterone antagonist diuretic, potassium-sparing diuretic |
Utilizzato per | Ritenzione idrica |
Chiamato anche | Aldactone®; |
Disponibile come | Compresse |
Spironolactone is used to treat fluid retention (oedema) caused by liver disease, kidney problems or insufficienza cardiaca. Oedema occurs when fluid leaks out of your blood vessels, causing swelling in the tissues of your lungs, feet or ankles. This makes you feel breathless or your legs feel puffy. Spironolactone prevents a build-up of fluid in your body by increasing the amount of urine your kidneys produce. It is also used to treat some other conditions which cause fluid retention, such as a disorder called primary hyperaldosteronism.
Spironolactone is known as a potassium-sparing diuretic. Unlike some other diuretics, it does not cause your body to lose potassium. Diuretics are sometimes referred to as 'water tablets'.
Spironolactone is often used alongside other diuretics. When it is used like this, it may be prescribed as a combination product, such as in Lasilactone® (spironolactone with furosemide) and Aldactide® (spironolactone with hydroflumethiazide). Combinations like these help to reduce the number of tablets you need to take each day.
Before taking spironolactone
Torna ai contenutiSome medicines are not suitable for people with certain conditions, and sometimes a medicine may only be used if extra care is taken. For these reasons, before you start taking spironolactone it is important that your doctor or pharmacist knows:
Se sei incinta, stai cercando di avere un bambino o stai allattando.
If you have kidney problems.
If you are being treated for prostate cancer.
If you have a problem with your adrenal glands, called Morbo di Addison.
If you have a rare inherited blood disorder, called porphyria.
Se stai assumendo altri medicinali. Questo include qualsiasi medicinale che stai assumendo e che è disponibile per l'acquisto senza prescrizione medica, così come i medicinali a base di erbe e complementari.
Se hai mai avuto una reazione allergica a un medicinale.
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How to take spironolactone
Torna ai contenutiBefore you start this treatment, read the manufacturer's printed information leaflet from inside your pack. The leaflet will give you more information about spironolactone and a full list of side-effects which you may experience from taking it.
Take spironolactone exactly as your doctor has told you. The usual dose varies from 25 mg to 200 mg. Depending upon which dose is right for you, you may be asked to take several tablets a day but these are generally taken at the same time.
Take the tablets with or just after a meal.
Spironolactone is commonly prescribed just once daily and you can generally take the dose at a time to suit you. However, diuretics are best taken no later than mid-afternoon. This is because you will find you may need to go to the toilet a couple of times after taking them and this could disturb your sleep if you take it late in the day.
If you have been prescribed more than one tablet of spironolactone a day and told to take them at different times, make sure you take your last tablet no later than 6 pm.
If you forget to take a dose, take it as soon as you remember. However, if it is after 6 pm in the evening, skip the missed dose and continue as usual the next day. Do not take two doses at the same time to make up for a missed dose.
Ottenere il massimo dal tuo trattamento
Torna ai contenutiTry to keep your regular appointments with your doctor. This is so your doctor can check on your progress. The salt balance in your bloodstream may be upset by diuretics and your doctor will want you to have a blood test from time to time to check for this.
Diuretics help you to lose water, so you can breathe or move more easily. If, however, you lose too much fluid, you may become dehydrated. This will make you feel thirsty and make your skin look and feel dry. Let your doctor know if this happens, as your dose may need to be adjusted.
Another sign of dehydration with spironolactone is rapid weight loss after starting the tablets. Speak with your doctor if you notice this happening.
Because spironolactone is a potassium-conserving diuretic, you should try to avoid things with a high potassium content, such as 'salt substitutes' or low-sodium salt. This is so the level of potassium in your body does not become too high.
Treatment with diuretics is usually long-term, so continue to take these tablets unless you are advised otherwise by your doctor.
Se acquisti dei medicinali, verifica con un farmacista che siano adatti da assumere insieme agli altri tuoi medicinali.
Se devi sottoporti a un'operazione o a un trattamento dentistico, informa la persona che esegue il trattamento sui medicinali che stai assumendo.
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Can spironolactone cause problems?
Torna ai contenutiAlong with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. These usually improve as your body adjusts to the new medicine, but speak with your doctor or pharmacist if any of the following side-effects continue or become troublesome.
Spironolactone side-effects | Cosa posso fare se sperimento questo? |
Sensazione di malessere (nausea) o vomito | Attieniti a pasti semplici - evita cibi ricchi o piccanti |
Feeling tired, dizzy, or sleepy | If this happens, do not drive and do not use tools or machines until you feel better |
Sexual problems, breast discomfort and enlargement, feeling confused, irregular periods, confusion, sweating, cramps, hair loss or unwanted hair growth, and skin rash | Se uno di questi diventa problematico, parla con il tuo medico |
Se si verificano altri sintomi che ritieni possano essere dovuti a questo medicinale, parla con il tuo medico o farmacista.
How to store spironolactone
Torna ai contenutiTenere tutti i medicinali fuori dalla portata e dalla vista dei bambini.
Conservare in un luogo fresco e asciutto, lontano da fonti di calore e luce diretta.
Informazioni importanti su tutti i medicinali
Torna ai contenutiInformazioni importanti su tutti i medicinali
Never take more than the prescribed dose. If you suspect that you or someone else has taken an overdose of this medicine, go to the accident and emergency department of your local hospital at once. Take the container with you, even if it is empty.
Questo medicinale è per te. Non darlo mai ad altre persone, anche se la loro condizione sembra essere la stessa della tua.
Non conservare medicinali scaduti o indesiderati. Portali alla tua farmacia locale che li smaltirà per te.
Se hai domande su questo medicinale, chiedi al tuo farmacista.
Segnala effetti collaterali di un medicinale o vaccino
Se si verificano effetti collaterali, è possibile segnalarli online tramite il sito web Yellow Card.
Video consigliati per Trattamento e prevenzione delle malattie cardiache

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Ulteriori letture e riferimenti
- Manufacturer's PIL, Aldactone® 25 mg, 50 mg and 100 mg Tablets; Pfizer Limited, The electronic Medicines Compendium. Dated June 2022.
- Medicinali Completi BNF 89ª Edizione; Associazione Medica Britannica e Società Farmaceutica Reale di Gran Bretagna, Londra.
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Storia dell'articolo
Le informazioni su questa pagina sono scritte e revisionate da clinici qualificati.
Next review due: 27 Feb 2027
30 Aug 2022 | Ultima versione

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