Natriumclodronat
Clasteon, Loron 520
Begutachtet von Sid DajaniZuletzt aktualisiert von Michael Stewart, MRPharmSLast updated 7. Aug. 2023
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Do not eat food or have drinks containing milk during the two hours before you take a dose of sodium clodronate, or for one hour after taking a dose.
Do not let yourself become dehydrated - drink several large glassfuls of water each day.
If you buy any medicines or health remedies, you should ask a pharmacist to advise you. Some mineral preparations and antacid medicines will prevent sodium clodronate from working properly.
At a glance
Sodium clodronate is a bisphosphonate medication for bone problems.
It helps relieve bone pain in cancer and reduces high calcium levels caused by cancer.
Take doses at specific times, avoiding food and milk around doses.
Do not take other medicines for two hours before or one hour after sodium clodronate.
Maintain good dental hygiene and tell your dentist you are taking this medicine.
Speak to your doctor if you experience thigh pain, jaw pain, or ear pain.
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About sodium clodronate
Art des Medikaments | Bisphosphonate |
Verwendet für | Bone pain in cancer; and to reduce high blood levels of calcium caused by cancer |
Auch genannt | Clodronate disodium (in US); Clasteon®; Loron 520® |
Verfügbar als | Tablets and capsules |
Sodium clodronate is a bisphosphonate and is prescribed for problems which affect bones. It is prescribed to ease bone pain in people with cancer that has spread into the bone, and also to reduce hypercalcaemia associated with some cancers.
In some cancers there can be an excessive breakdown of bone. As this happens, calcium is lost from the bone and seeps into the blood, leading to higher than normal levels of calcium in the blood. This is called hypercalcaemia. Sodium clodronate binds to bone and reduces the rate at which it is broken down. This helps to strengthen bones and prevents the loss of calcium. This in turn reduces the high levels of calcium in the blood.
Before taking sodium clodronate
Zurück zum InhaltSome 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 sodium clodronate it is important that your doctor knows:
Wenn Sie schwanger sind oder stillen.
If you have recently had any inflammation of your digestive system such as an upset stomach or bowel.
If you are due to have any dental treatment in the near future, or if you have nicht recently had a dental check-up.
Wenn Sie Probleme mit der Funktionsweise Ihrer Nieren haben.
Wenn Sie andere Medikamente einnehmen. Dazu gehören alle Medikamente, die Sie einnehmen und die ohne Rezept erhältlich sind, sowie pflanzliche und ergänzende Medikamente.
Wenn Sie jemals eine allergische Reaktion auf ein Medikament hatten.
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How to take sodium clodronate
Zurück zum InhaltBefore you start the treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about sodium clodronate and will provide you with a full list of the side-effects which you may experience from taking it.
Take sodium clodronate tablets/capsules exactly as your doctor tells you to. It is usual to be prescribed one or two doses to take each day. If you are prescribed one dose to take each day, take it first thing in the morning an hour before you have breakfast. If you are prescribed two doses a day, take your first dose an hour before breakfast and then take your second dose between meals (but see also the following advice).
Some foods and other medicines can interfere with how your body absorbs sodium clodronate and this will prevent the medicine from working as it should. Do not eat anything during the two hours before you take a dose, and also for one hour after taking a dose. It is particularly important that you avoid milk (including any drinks which contain milk) during this three-hour period. If you take other medicines, see the advice in the section below.
Try to take your doses of sodium clodronate at the same times of day each day. This will get you into a good daily routine and will help you avoid missing any doses.
If you do forget to take a dose, just take your next tablet/capsule at the usual time and continue as before. Do not take two doses together to make up for a missed dose.
Das Beste aus Ihrer Behandlung herausholen
Zurück zum InhaltTry to keep your regular appointments with your doctor. This is so your doctor can check on your progress. You will need to have regular blood tests during treatment.
It is important that you do not become dehydrated during treatment with sodium clodronate. Your doctor will likely advise you to drink several large glassfuls of water each day. This is especially important in warm weather.
If you are taking any other medicines, do not take them during the two hours before you take sodium clodronate and wait for at least an hour afterwards before you take your other medicines. If you buy any medicines 'over the counter', check with a pharmacist that they are suitable for you to take. This is because mineral supplements, iron preparations, and some indigestion remedies reduce the amount of sodium clodronate which your body absorbs and this will make your treatment less effective. Also, some painkillers called non-steroidal anti-inflammatory drugs (NSAIDs), can cause kidney problems when taken alongside sodium clodronate.
Good dental hygiene is particularly important while you are taking sodium clodronate - brush your teeth regularly and remember to have routine dental check-ups. Also, tell your dentist that you are taking sodium clodronate, as some dental treatments may not be recommended for you.
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Can sodium clodronate cause problems?
Zurück zum InhaltAlong with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. The table below contains some of the most common ones associated with sodium clodronate. You will find a full list in the manufacturer's information leaflet supplied with your medicine. The unwanted effects often improve as your body adjusts to the new medicine, but speak with your doctor or pharmacist if any of the following continue or become troublesome.
Common sodium clodronate side-effects (these affect fewer than 1 in 10 people) | Was kann ich tun, wenn ich das erlebe? |
Sich krank fühlen (Übelkeit) oder krank sein (Erbrechen) | Stick to simple foods - avoid rich or spicy meals. If this becomes troublesome, speak with your doctor |
Durchfall | Drink plenty of water to replace any lost fluids. If this becomes troublesome, speak with your doctor |
Changes to some blood test results | Your doctor will monitor for these |
Less common, but possibly serious side-effects | What should I do if I experience this? |
Pain in your thigh, hip, or groin | Speak with your doctor as soon as possible - these can be signs of a thighbone fracture |
A loose tooth, or jaw pain with swelling or numbness | Speak with your doctor as soon as possible - these can be signs of a problem called osteonecrosis of the jaw |
Ear pain, discharge from an ear, ear infection | These could be signs of a problem called osteonecrosis of the ear. Speak with your doctor straightaway |
Wenn Sie andere Symptome bemerken, die Ihrer Meinung nach auf das Medikament zurückzuführen sind, sprechen Sie mit Ihrem Arzt oder Apotheker für weitere Ratschläge.
How to store sodium clodronate
Zurück zum InhaltBewahren Sie alle Medikamente außerhalb der Reichweite und Sicht von Kindern auf.
An einem kühlen, trockenen Ort aufbewahren, fern von direkter Hitze und Licht.
Wichtige Informationen über alle Medikamente
Zurück zum InhaltWichtige Informationen über alle Medikamente
Nehmen Sie niemals mehr als die vorgeschriebene Dosis ein. Wenn Sie vermuten, dass Sie oder jemand anderes eine Überdosis dieses Medikaments eingenommen hat, gehen Sie sofort in die Notaufnahme Ihres örtlichen Krankenhauses. Nehmen Sie den Behälter mit, auch wenn er leer ist.
Dieses Medikament ist für Sie. Geben Sie es niemals an andere Personen weiter, auch wenn deren Zustand ähnlich erscheint wie Ihrer.
Bewahren Sie keine abgelaufenen oder unerwünschten Medikamente auf. Bringen Sie sie zu Ihrer örtlichen Apotheke, die sie für Sie entsorgt.
Wenn Sie Fragen zu diesem Medikament haben, fragen Sie Ihren Apotheker.
Berichten Sie Nebenwirkungen eines Medikaments oder Impfstoffs
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Überprüfen Sie mögliche Wechselwirkungen zwischen Medikamenten, Nahrungsergänzungsmitteln und Lebensmitteln, bevor Sie sie zusammen einnehmen.
Häufig gestellte Fragen
What is the main purpose of sodium clodronate for cancer patients?
Sodium clodronate is prescribed for cancer patients to relieve bone pain where cancer has spread to the bone. It also helps to lower very high levels of calcium in the blood, a condition known as hypercalcaemia, which can occur in some cancers.
How does sodium clodronate work to help my bones?
This medicine works by binding to your bones and slowing down the rate at which they are broken down. This process helps to make your bones stronger and prevents calcium from leaking out of them into your bloodstream, which in turn reduces high blood calcium levels.
Are there any specific foods or drinks I should avoid when taking sodium clodronate?
Yes, it is very important not to eat anything for two hours before taking a dose of sodium clodronate, and for one hour after taking it. During this three-hour period, you must particularly avoid milk and any drinks that contain milk, as these can interfere with how your body absorbs the medicine.
What should I do if I forget to take a dose of my medication?
If you miss a dose, you should simply take your next tablet or capsule at its usual scheduled time. Do not try to take two doses together to compensate for the missed one.
Why is dental hygiene so important while on this medication?
Maintaining good dental hygiene, including regular brushing and routine dental check-ups, is particularly important while taking sodium clodronate. You must also inform your dentist that you are taking this medicine, as some dental treatments might not be recommended for you.
What are some less common but serious side-effects I should be aware of?
While less common, some serious side-effects include pain in your thigh, hip, or groin, which could signal a thighbone fracture. Also, watch out for a loose tooth, jaw pain with swelling or numbness, as these can be signs of osteonecrosis of the jaw. Ear pain, discharge, or infection could indicate osteonecrosis of the ear. If you experience any of these, contact your doctor immediately.
Can I take other medicines, including over-the-counter ones, with sodium clodronate?
You should not take other medicines during the two hours before taking sodium clodronate and should wait at least an hour afterwards before taking them. Mineral supplements, iron preparations, and some indigestion remedies can reduce the effectiveness of sodium clodronate. Additionally, some painkillers called NSAIDs can cause kidney problems if taken with sodium clodronate. Always check with a pharmacist if buying over-the-counter medicines.
Weiterführende Literatur und Referenzen
- Medikamente Komplett BNF 89. Ausgabe; Britische Ärztevereinigung und Königliche Pharmazeutische Gesellschaft von Großbritannien, London.
- Manufacturer's PIL, Loron® 520 mg film-coated tablets; Esteve Pharmaceuticals (formerly Intrapharm Laboratories), The electronic Medicines Compendium. Dated June 2022.
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About the authorView full bio

Michael Stewart, MRPharmS
Manager für die Überprüfung von Beipackzetteln – Auftragnehmer, Apotheker
BPharm (Hons), MRPharmS
Michael ist ein Gemeindapotheker, der in den Midlands und South Yorkshire praktiziert und über mehr als 20 Jahre Erfahrung in der Beratung zu Medikamenten und medizinischen Bedingungen verfügt. Er hat einen starken Hintergrund in der Gesundheitsausbildung, da er Schulungskurse für Apothekenteams und Mitarbeiter von Pflegeeinrichtungen, einschließlich Krankenschwestern, erstellt und durchgeführt hat. Er hat auch zu Apothekenbeiräten für das Management von geringfügigen Erkrankungen in der Gemeinschaft beigetragen.
About the reviewer

Sid Dajani
Sultan Dajani qualified at the London School of Pharmacy in 1994 and became the youngest elected member of the Royal Pharmaceutical Society council since its founding in 1842.
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