Capsule di calcitriolo
Rocaltrol
Revisione paritaria di Sid DajaniUltimo aggiornamento di Michael Stewart, MRPharmSUltimo aggiornamento 17 Ago 2024
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Calcitriol is a type of vitamin D.
It is important that you follow any dietary advice you have been given by your doctor or dietician.
Assicurati di conoscere i sintomi di un eccesso di calcio nel sangue - questi includono perdita di appetito, sensazione di sete, nausea (vomito), stanchezza e perdita di peso. Si prega di informare il medico se si sviluppano questi sintomi.
At a glance
Calcitriol is a type of vitamin D used to promote healthy bones.
It is prescribed for bone diseases like renal osteodystrophy or postmenopausal osteoporosis.
Calcitriol helps your body absorb calcium and phosphate, strengthening bones.
Take calcitriol exactly as your doctor tells you, usually once or twice a day.
You will have regular blood tests to check calcium levels and kidney function.
Seek medical advice if you experience signs of too much calcium, such as thirst or frequent urination.
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About calcitriol
Tipo di medicinale | Un tipo di vitamina D |
Utilizzato per | Per promuovere ossa sane |
Chiamato anche | Rocaltrol® |
Disponibile come | Capsule |
You will have been prescribed calcitriol because you have either a bone disease called renal osteodystrophy or because you have postmenopausal 'thinning' of the bones (osteoporosi). In both these conditions, calcitriol will help your body to absorb the minerals it needs and this will help to strengthen your bones.
Calcitriol is a type of vitamin D. Vitamin D helps to regulate the amount of two minerals in your body, called calcium and phosphate. All three of these substances are important for maintaining healthy, strong bones and teeth.
There are several types of vitamin D available but most other types need 'activating' by the kidneys. Calcitriol is a form of vitamin D which does not need this activation process, and so it is particularly helpful for people who need their bones strengthening but who also have kidney problems. You may also need to take mineral supplements along with calcitriol.
Before taking calcitriol
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 calcitriol it is important that your doctor knows:
Se sei incinta o stai allattando.
Se sai di avere troppo calcio nel sangue o nelle urine. Questo può accadere con alcuni tipi di cancro.
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 calcitriol
Torna ai contenutiBefore you start the treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about calcitriol and will provide you with a full list of the side-effects which you may experience from taking it.
Take calcitriol exactly as your doctor tells you to. If you have renal osteodystrophy, it is likely that you will be prescribed one dose a day, although some people may only need to take a dose on alternate days. When you first start the treatment, your doctor may give you a small dose and then gradually increase it. This allows your doctor to make sure that you have the dose that helps your condition but avoids any unwanted symptoms.
For 'thinning' of the bones (osteoporosis), the usual dose is one 250 nanogram capsule, twice daily.
Try to take your doses at the same times of day each day, as this will help you to remember to take calcitriol regularly. Swallow the capsules with a drink of water.
If you forget to take a dose at your usual time, take it when you remember. Try to take the correct number of doses each day, but do not take two doses together 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. Your doctor will want you to have regular blood tests to check on the amount of calcium in your blood and also on how well your kidneys are working.
Your doctor or dietician will discuss with you how to maintain a well-balanced and healthy diet. Please follow any advice you are given about what to eat and drink. It is important that you have plenty to drink so that you don't become dehydrated and that you don't eat foods that have been fortified with vitamin D.
Treatment with calcitriol is often long-term. Continue to take the capsules regularly unless you are told otherwise by your doctor.
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Can calcitriol cause problems?
Torna ai contenutiAlong with their useful effects, most medicines can cause unwanted side-effects although not everyone experiences them. The most common side-effect associated with calcitriol is due to too much calcium being in your blood. The table below contains some other common side-effects. You will find a full list of side-effects in the manufacturer's information leaflet supplied with your medicine. Please speak with your doctor or pharmacist if any of the following continue or become troublesome.
Common calcitriol side-effects (these affect fewer than 1 in 10 people) | Cosa posso fare se sperimento questo? |
Loss of appetite, loss of weight, feeling sick (nausea), feeling thirsty, sweating, a metallic taste in your mouth, a need to pass urine more often | These are signs that there could be too much calcium in your blood. Make an appointment to see your doctor as soon as possible. Your dose may need adjusting |
Mal di testa | Drink plenty of water and ask your pharmacist to recommend a suitable painkiller. If this continues, speak with your doctor |
Feeling sick (nausea), tummy (abdominal) discomfort | Stick to simple meals - avoid rich or spicy foods. If this continues, speak with your doctor, as being sick is a sign of too much calcium in your blood |
Rash, urinary infections | Se problematico, parla con il tuo medico |
If you experience any other symptoms which you think may be due to the capsules, please speak with your doctor or pharmacist for further advice.
How to store calcitriol
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
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Domande frequenti
What is calcitriol used for?
Calcitriol is prescribed to help strengthen bones in people who have either a bone disease called renal osteodystrophy or 'thinning' of the bones (osteoporosis) after menopause. It helps the body absorb minerals needed for bone health.
How does calcitriol differ from other vitamin D types?
Calcitriol is a form of vitamin D that doesn't require activation by the kidneys, unlike many other types. This makes it especially useful for individuals needing bone strengthening who also have kidney problems.
What should I do if I forget to take a dose of calcitriol?
If you miss a dose, take it as soon as you remember. However, do not take two doses together to compensate for the forgotten dose. Always try to maintain the correct number of doses each day as prescribed by your doctor.
Are there any dietary changes I should make while taking calcitriol?
Your doctor or dietician will provide specific advice on maintaining a healthy diet. It's important to drink plenty of fluids to avoid dehydration and to avoid eating foods that have been fortified with vitamin D.
How will my doctor monitor my treatment with calcitriol?
You will need to attend regular appointments with your doctor for monitoring. This will include blood tests to check the amount of calcium in your blood and to assess how well your kidneys are functioning.
What are the signs of having too much calcium in my blood while on calcitriol?
Signs that you might have too much calcium in your blood include loss of appetite, weight loss, feeling sick (nausea), increased thirst, sweating, a metallic taste in your mouth, and needing to pass urine more frequently. If you experience these symptoms, contact your doctor as soon as possible as your dose might need adjustment.
How should I store calcitriol capsules?
Keep calcitriol, like all medicines, out of the reach and sight of children. Store it in a cool, dry place, away from direct heat and light.
Ulteriori letture e riferimenti
- Manufacturer's PIL, Rocaltrol® 0.25 mcg and 0.5 mcg capsules; Atnahs Pharma UK Ltd, The electronic Medicines Compendium. Dated September 2020.
- Medicinali Completi BNF 89ª Edizione; Associazione Medica Britannica e Società Farmaceutica Reale di Gran Bretagna, Londra.
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About the authorView full bio

Michael Stewart, MRPharmS
Medicine Leaflet Review Manager – Contractor, Pharmacist
BPharm (Hons), MRPharmS
Michael is a community pharmacist practicing in the Midlands and South Yorkshire with more than 20 years’ experience advising on medicines and medical conditions. He has a strong background in healthcare training, having produced and delivered training courses for pharmacy teams and staff of residential care settings, including nurses. He has also contributed to pharmacy advisory boards for the management of low acuity conditions in the community.
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.
Storia dell'articolo
Le informazioni su questa pagina sono scritte e revisionate da clinici qualificati.
Prossima revisione prevista: 21 Ago 2027
17 Ago 2024 | Ultima versione

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