Alendronate sodium trihydrate

Fosamax once-weekly tablets contain alendronic acid and are used to treat osteoporosis. The medication helps prevent the loss of bone density in post-menopausal women.

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PLEASE NOTE: This treatment is not available through our online pharmacy service. This page is for information only. If you are experiencing any of the symptoms related to the condition(s) this medication treats, we strongly recommend that you see your GP in person.
Product information

What is Fosamax?

Fosamax contains alendronic acid, from the group of drugs known as bisphosphonates, and is an effective non-hormonal treatment for osteoporosis. 

How does Fosamax work?

Alendronate, the active ingredient, works to prevent the production of osteoblast cells which break down bone cells. This means that the amount of bone cells being lost is reduced and, in some cases, improved. 

Osteoporosis is a bone condition where bone density is compromised. Consequently fractures and breaks are more likely to occur. This condition is common in women who have been through menopause, however, it can be treated with medication. 

You are more likely to develop osteoporosis as you get older and bone density begins to decrease, but it can also be caused by other factors. It can occur as a side effect of taking certain medication. Corticosteroid treatments for autoimmune conditions such as arthritis and coeliac disease can impact bone density. Your doctor may prescribe preventative treatments if you are taking such medication. 

A bone density scan, known as a DEXA scan, can confirm the severity of the condition. Mild cases of osteoporosis can sometimes be treated with calcium and vitamin D supplements. More advanced cases may require bone building treatments or hormone replacements. 

Where can I find out more about treatment?

If you’ve had a recent fracture or noticed back pain or stooping then you may wish to consult your doctor about osteoporosis. Our online video consultation service gives you secure access to qualified clinical professionals. You can book an appointment around your schedule and discuss your symptoms and treatment requirements in confidence. 

Page last reviewed:  29/05/2020

You should read to the leaflet and the instructions issued by your prescriber when taking this treatment.

Page last reviewed:  29/05/2020
Please read the patient information leaflet for this medicine fully before use:

Fosamax 70mg

Side effects

You should speak to your doctor or pharmacist about any side effects you have when using this treatment. If you develop any serious side effects, you should go to your nearest hospital as soon as possible. If you start to use any other treatments, inform your prescriber. You should also alert your prescriber to any treatments you're currently using. 

Page last reviewed:  29/05/2020
Please read the patient information leaflet for this medicine fully before use:

Fosamax 70mg


Can I drink alcohol while taking Fosamax? 

Alcohol may increase the likelihood of experiencing unwanted side effects when taking this treatment. Speak to your doctor before you drink alcohol when taking Fosamax. 

Should I take it with food? 

It is important to follow the directions listed in the patient information leaflet, or provided by the prescribing clinician when taking this treatment. Taking Fosamax with food can prevent the treatment from working as well as it should. 

Is it suitable to use while pregnant or breastfeeding?

No. Do not use this medication if you are pregnant or breastfeeding. 

How should it be stored? 

Keep away from children. 

Is it available over the counter? 

You will need a prescription in order to buy Fosamax. 

How can I buy Fosamax online?

You can discuss your Fosamax treatment with a doctor or prescribing pharmacist through our online video consultation service. 

Should you require treatment, you can choose to have this dispensed by our GPhC-registered pharmacy and shipped by next-day courier to your address. Or alternatively you can have an e-prescription sent to a local pharmacy for you to pick up.

Page last reviewed:  29/05/2020
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