A bisphosphonate for osteoporosis
Ibandronic acid
A bisphosphonate that strengthens bone and reduces fracture risk in osteoporosis; the tablet is taken first thing on an empty stomach with plain water while staying upright, or it can be given as an occasional injection.
What is Ibandronic acid?
Ibandronic acid is a bisphosphonate used in the UK mainly to treat osteoporosis, where it strengthens bone and lowers the risk of fractures. It slows the cells that break bone down, helping the skeleton stay stronger. The tablet must be taken first thing in the morning on an empty stomach with plain water, staying upright and waiting before eating, or it can instead be given as an occasional injection into a vein.
Education and reference only. This is a plain-language guide to Ibandronic acid — it deliberately contains no doses. Doses depend on the person, the brand and the reason for treatment, and belong with your prescriber. Always check the BNF, the product labelling (SmPC) and follow medical advice.
What it is
Ibandronic acid is a bisphosphonate medicine used mainly to treat and prevent osteoporosis, the condition where bones become thinner and more likely to break. It is also used in some cancers to protect the bones. In osteoporosis it reduces the chance of fractures, particularly of the spine. It can be taken as a tablet or given as an occasional injection into a vein, which suits people who struggle with the strict tablet-taking instructions or have problems with the gullet.
How it works
Bone is constantly being renewed: cells called osteoclasts break old bone down while others build new bone. In osteoporosis, breakdown outpaces rebuilding and bones weaken. Ibandronic acid sticks to bone and is taken up by the osteoclasts, reducing their activity. With less bone being broken down, the balance shifts back towards keeping bone, so the skeleton becomes stronger and less likely to fracture.
Company & origin
Originated / developed by: Developed by Roche; the Bonviva brand was marketed by Roche and partners..
Ibandronic acid is a bisphosphonate developed by Roche and used in the UK to strengthen bone in osteoporosis, and in cancer care to protect bones.
What it treats
Conditions Ibandronic acid is used for
Practical use
How to take Ibandronic acid
General, dose-free guidance — always follow your prescriber's and the leaflet's specific instructions.
- Take the tablet first thing in the morning on an empty stomach, after getting up for the day.
- Swallow it whole with a full glass of plain tap water — not other drinks — and do not suck or chew it.
- Stay sitting or standing upright and wait before eating, having other drinks, or taking other tablets.
- Keep calcium-containing foods, supplements and indigestion remedies well apart from it, as they stop it being absorbed.
- If the tablet routine is difficult or you have gullet problems, ask about the occasional injection given into a vein.
- Tell your dentist you take a bisphosphonate, keep up good dental care, and report any new jaw pain, thigh or groin pain.
Weighing it up
Advantages & disadvantages of Ibandronic acid
Advantages
- It strengthens bone and reduces the risk of fractures in osteoporosis, especially of the spine.
- It offers a choice of an occasional tablet or an occasional injection to suit different people.
- The injection avoids the strict tablet-taking instructions and suits people with gullet problems.
Disadvantages
- The tablet has strict instructions — empty stomach, plain water, staying upright and waiting before food — which some find inconvenient.
- It can irritate the gullet and cause heartburn or swallowing discomfort.
- Rarely it is linked with jawbone problems (osteonecrosis of the jaw) and unusual thigh-bone fractures, so dental care and reporting new bone pain matter.
Practical use
Good to know
The tablet has strict instructions because it can irritate the gullet. It is taken first thing in the morning on an empty stomach with a full glass of plain water (not other drinks), and you must stay sitting or standing upright and wait before eating, drinking anything else or taking other tablets. Calcium-containing foods, supplements and indigestion remedies stop it being absorbed, so they are kept well apart. If swallowing this way is difficult, an occasional injection into a vein is an alternative. Good dental care matters: tell your dentist you take a bisphosphonate, and ideally have any major dental work before starting, because of a rare jawbone problem (osteonecrosis of the jaw). Your calcium and vitamin D should be adequate, and these are often prescribed alongside.
Who should not take it / use with caution
- People who cannot stay upright for the required time, or who have certain problems with the gullet such as narrowing or difficulty swallowing (for the tablet).
- People with a low blood calcium level, which is corrected before starting.
- People with significant kidney problems, in whom it is used cautiously or avoided.
- Care in those with ongoing dental problems or planned major dental surgery, and in pregnancy and breastfeeding.
Monitoring
- Bone density (DEXA) scans to assess response over time
- Blood calcium, vitamin D and kidney function around starting and as advised
- Dental checks and review of any jaw or thigh-bone symptoms
Side effects
- Heartburn, indigestion or discomfort on swallowing (more with the tablet).
- Aches in the muscles, joints or bones, and headache; flu-like symptoms can follow an injection.
- Rarely, jawbone problems (osteonecrosis of the jaw) or unusual thigh-bone fractures — report new jaw, thigh or groin pain.
Key interactions
- Calcium, iron and magnesium supplements, antacids and indigestion remedies stop the tablet being absorbed — keep them well apart.
- Care alongside other medicines that can irritate the stomach or gullet, such as anti-inflammatory painkillers.
- Tell your prescriber about all your medicines and supplements, including over-the-counter remedies.
Available as: Tablets, and an injection given into a vein.
Answers
Ibandronic acid: frequently asked questions
Why are the tablet-taking instructions so strict?
Ibandronic acid tablets can irritate the gullet, and food or other drinks stop them being absorbed. Taking the tablet first thing on an empty stomach with plain water, staying upright and waiting before food protects the gullet and helps the medicine work.
Can I take ibandronic acid as an injection instead?
Yes. An occasional injection into a vein is available, which avoids the strict tablet instructions and suits people who have problems with the gullet or find the tablet routine difficult. Your prescriber can discuss which is right for you.
What is osteonecrosis of the jaw and should I worry?
It is a rare problem where part of the jawbone is damaged and does not heal well. The risk with osteoporosis treatment is low. Keeping up good dental care, telling your dentist you take a bisphosphonate, and ideally having major dental work before starting all help reduce it.
Do I still need calcium and vitamin D?
Usually yes. Bisphosphonates work best when your calcium and vitamin D are adequate, so these are often checked and prescribed alongside. Take any calcium supplement well apart from the tablet, as it blocks absorption.
What is the difference between ibandronic acid and Bonviva?
They are the same medicine — ibandronic acid is the active-ingredient name and Bonviva is a brand name. Generic ibandronic acid contains the identical active ingredient.
The wider class
About Bisphosphonates
Ibandronic acid belongs to the bisphosphonates class. For how the class as a whole works, its shared safety principles and monitoring, see the full guide.
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Authoritative sources
- BNF: Ibandronic acid.
- NICE CKS: Osteoporosis.
- electronic Medicines Compendium (SmPC): Bonviva.
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