Alendronic acid for osteoporosis
Fosamax, Binosto
נבדק על ידי Sid Dajaniעודכן לאחרונה על ידי Michael Stewart, MRPharmSLast updated 7 Aug 2023
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It is very important that you carefully follow the instructions for taking alendronic acid - otherwise it can cause irritation and damage to your throat. You will find full instructions on the information leaflet provided with your medicine. See also the section called 'Taking alendronic acid', below.
If you buy any medicines, make sure your pharmacist knows that you are taking a bisphosphonate, as some medicines will prevent alendronic acid from working properly.
Good dental hygiene is particularly important with this treatment - this means that you must brush your teeth regularly, and have routine dental check-ups.
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המשך לקרוא למטה
About alendronic acid
סוג התרופה | Bisphosphonate |
שימוש עבור | אוסטאופורוזיס |
נקרא גם | Sodium alendronate; Binosto®; Fosamax® Once Weekly |
זמין כ | Tablets, soluble tablets and oral liquid |
אוסטאופורוזיס is a bone disease which causes your bones to become brittle and fragile, making them prone to breaks and fractures. During our lifetime, old bone tissue is constantly being broken down and replaced by new bone. After the age of about 30-35 years, our bone begins to lose density because old bone is lost faster than new bone can replace it. Women in particular have an increased risk of developing osteoporosis, as they lose bone material rapidly after the menopause.
Alendronic acid belongs to a group of medicines known as bisphosphonates. These medicines slow down the rate at which old bone is lost. As your body continues to make new bone, this leads to an overall increase in bone density. This reduces your risk of broken bones and fractures. You may be prescribed alendronic acid to take once a day (10 mg strength tablets), or more commonly, once a week (70 mg strength tablets/medicine).
In the brands of tablets called Fosavance® and Bentexo®, alendronic acid is combined with a vitamin called colecalciferol (also known as vitamin D3). Colecalciferol helps your bones absorb calcium. Because our bodies naturally make colecalciferol from exposure to sunlight and also absorb small amounts from foods such as oily fish, many people do not need supplements of this vitamin. However, as we get older, the amount of colecalciferol we absorb naturally may reduce. This brand of tablet is suitable for people requiring supplements of colecalciferol alongside alendronic acid.
Before taking alendronic acid
חזרה לתוכןSome 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 alendronic acid it is important that your doctor knows:
אם את בהריון או מניקה.
If you have ever had any difficulties swallowing.
If you have had a stomach ulcer, stomach bleeding or any surgery on your upper digestive system within the previous year.
If you are due to have any dental treatment in the near future, or if you have נחשבת recently had a dental check-up.
If you have any problems with the way your kidneys work.
If you are unable to sit upright for at least 30 minutes.
If you have been told you have low amounts of calcium in your blood.
אם אתה נוטל תרופות אחרות כלשהן. זה כולל כל תרופה שאתה נוטל שניתן לרכוש ללא מרשם, כמו גם תרופות צמחיות ומשלימות.
אם אי פעם הייתה לך תגובה אלרגית לתרופה.
המשך לקרוא למטה
How to take alendronic acid
חזרה לתוכןBefore you start the treatment, read the manufacturer's printed information leaflet from inside the pack. It will give you more information about alendronic acid and will provide you with a full list of the side-effects which you may experience from taking it.
If you are taking alendronic acid 10 mg tablets, take one tablet daily. If on any day you forget to take a dose, just take your tablet on the next day as usual. Do not take a double dose to make up for a missed dose.
If you are taking tablets containing alendronic acid 70 mg (brands Fosamax® Once weekly and Fosavance®), take one tablet once a week. You must take your dose on the same day of each week, so choose a day that best suits your routine. If you forget to take a dose on your usual day, take it on the following morning and then continue taking it on your chosen day when your next dose is due.
If you are taking alendronic acid 70 mg in 100 ml oral liquid medicine, take 100 ml (one unit) once a week. Take it on the same day of each week. If you forget to take a dose on your usual day, take it on the following morning and then continue taking it on your chosen day when your next dose is due.
Taking alendronic acid
It is important that you take alendronic acid in the correct way, as otherwise it can cause irritation and damage as it is swallowed:
Take the tablet/medicine first thing after getting up in the morning. Take it before you eat any food or have anything to drink other than water.
You must drink a large glassful of plain water (not mineral water) as you take your dose. If you are taking tablets, swallow the tablet whole - you must נחשבת chew, break, or crush alendronic acid tablets.
It is important that you take your dose while you are standing or sitting in an upright position.
Continue to sit or stand upright for 30 minutes after taking your dose - you must נחשבת lie down during this time.
Do not have anything to eat or drink (other than plain water), or take any other medicines during the 30 minutes after taking a dose.
להפיק את המרב מהטיפול שלך
חזרה לתוכןTry to keep your regular appointments with your doctor. This is so your doctor can check on your progress. It is likely you will need to have regular blood tests during this treatment.
If you are taking other medicines, wait at least 30 minutes after taking alendronic acid before taking 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 alendronic acid which your body absorbs. This can make your treatment less effective.
Good dental hygiene is particularly important while you are taking alendronic acid - brush your teeth regularly and remember to have routine dental check-ups. Tell your dentist that you are taking alendronic acid, as some dental treatments may not be recommended for you.
Eating a well-balanced diet and taking regular exercise can help your bones stay strong. Remember to follow any exercise or dietary advice that your doctor gives to you.
Chemicals from tobacco can get into your bloodstream and can affect your bones, making bone loss worse. If you are a smoker, you should try to quit if possible. Ask your doctor or pharmacist for advice on how to stop smoking.
המשך לקרוא למטה
Can alendronic acid cause problems?
חזרה לתוכןAlong 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 alendronic acid. 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 alendronic acid side-effects (these affect fewer than 1 in 10 people) | מה אני יכול לעשות אם אני חווה את זה? |
Indigestion, abdominal pain, bloating, wind (flatulence), acid regurgitation, feeling sick (nausea) | Make sure you carefully follow the directions for taking alendronic acid and remain standing or sitting for at least half an hour afterwards. If the symptoms get worse, let your doctor know straightaway |
שלשול | שתו הרבה מים כדי להחליף נוזלים שאבדו |
עצירות | Try to eat a well-balanced diet and drink several glasses of water a day |
Headache, muscle or joint pain | Drink plenty of water and ask your pharmacist to recommend a suitable painkiller. If the pain continues, let your doctor know |
Feeling dizzy, itching | אם יש בעיה, דבר עם הרופא שלך |
Less common, but possibly serious, side-effects | What should I do if I experience this? |
Heartburn, pain or difficulty when you swallow | Stop taking alendronic acid and speak with your doctor as soon as possible - these can be signs of severe throat irritation |
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 |
Black or bloody stools | Speak with your doctor as soon as possible - this can be a sign of an ulcer |
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 |
אם אתה חווה תסמינים נוספים שלדעתך עשויים להיות כתוצאה מהתרופה, פנה לרופא או לרוקח שלך לקבלת ייעוץ נוסף.
How to store alendronic acid
חזרה לתוכןשמור את כל התרופות מחוץ להישג ידם וראייתם של ילדים.
יש לאחסן במקום קריר ויבש, הרחק מחום ואור ישיר.
מידע חשוב על כל התרופות
חזרה לתוכןמידע חשוב על כל התרופות
לעולם אל תיקח יותר מהמינון שנקבע. אם אתה חושד שאתה או מישהו אחר אולי לקח מנת יתר של תרופה זו, פנה מיד לחדר המיון בבית החולים המקומי שלך. קח איתך את המיכל, אפילו אם הוא ריק.
תרופה זו מיועדת עבורך. לעולם אל תיתן אותה לאנשים אחרים, גם אם מצבם נראה דומה לשלך.
אל תשמרו תרופות שפג תוקפן או שאינן רצויות. קחו אותן לבית המרקחת המקומי שלכם שיטפל בהן עבורכם.
אם יש לך שאלות לגבי התרופה הזו, שאל את הרוקח שלך.
דווח על תופעות לוואי לתרופה או חיסון
אם אתה חווה תופעות לוואי, תוכל לדווח עליהן באינטרנט דרך ה Yellow Card website.

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קריאה נוספת והפניות
- Manufacturer's PIL, Fosamax® Once Weekly 70 mg Tablets; Organon Pharma (UK) Limited, The electronic Medicines Compendium. Dated April 2022.
- Manufacturer's PIL, Fosavance® Tablets; Organon Pharma (UK) Limited, The electronic Medicines Compendium. Dated October 2021.
- Manufacturer's PIL, Binosto® 70 mg effervescent tablets; Internis Pharmaceuticals Ltd, The electronic Medicines Compendium. Dated October 2021.
- תרופות מלאות BNF מהדורה 89; האגודה הרפואית הבריטית והחברה המלכותית לפרמקולוגיה של בריטניה הגדולה, לונדון.
המשך לקרוא למטה
About the author

מייקל סטיוארט, 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

סיד דג'אני
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.
היסטוריית המאמר
המידע בעמוד זה נכתב ונבדק על ידי קלינאים מוסמכים.
Next review due: 6 Aug 2026
7 Aug 2023 | הגרסה האחרונה

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