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Package Leaflet: Information for the Patient


250 mg chewable tablets


500 mg chewable tablets


750 mg chewable tablets


1000 mg chewable tablets



Read all of this leaflet carefully before you start taking this medicine because it contains important information for you.
- Keep this leaflet. You may need to read it again.
- If you have any further questions, ask your doctor or pharmacist.
- This medicine has been prescribed for you only. Do not pass it on to others. It may harm them, even if their signs of illness are the same as
- If you get any side effects, talk to your doctor or pharmacist. This includes any possible side effects not listed in this leaflet. See section 4.

What is in this leaflet:
1. What Fosrenol is and what it is used for
2. What you need to know before you take Fosrenol
3. How to take Fosrenol
4. Possible side effects
5. How to store Fosrenol
6. Contents of the pack and other information

1. What Fosrenol is and what it is used for

If you need to have an x-ray, please inform your doctor that you are taking
Fosrenol as it may affect the results.
Other medicines and Fosrenol
Tell your doctor or pharmacist if you are taking, have recently taken, or
might take any other medicines.
Fosrenol can affect how certain drugs are absorbed from your digestive
tract. If you are taking chloroquine (for rheumatism and malaria),
ketoconazole (for fungal infections), tetracycline or doxycycline antibiotics
they should not be taken within 2 hours before or after taking Fosrenol.

Fosrenol is used to lower the phosphate level in the blood of adult patients
with chronic kidney disease.

It is not recommended that you take oral floxacin antibiotics (including
ciprofloxacin) within 2 hours before or 4 hours after taking Fosrenol.

Patients who have kidneys that do not work properly are not able to control
the level of phosphate in the blood. The amount of phosphate in the blood
then rises (your doctor may call this hyperphosphataemia).

If you are taking levothyroxine (for an under active thyroid) it should not be
taken within 2 hours before or after taking Fosrenol. Your doctor may want
to monitor the levels of thyroid-stimulating hormone (TSH) in your blood
more closely.

Fosrenol is a drug which reduces the body’s absorption of phosphate from
food by binding with it in your digestive tract. Phosphate which have bonded
to Fosrenol cannot be absorbed through the intestinal wall.
2. What you need to know before you take Fosrenol
Do not take Fosrenol

if you are allergic to lanthanum carbonate hydrate or any of the
other ingredients of this medicine (listed in section 6).

if you have too little phosphate in your blood (hypophosphataemia).

Warnings and precautions
Talk to your doctor or pharmacist before taking Fosrenol if you know that
you have, or have had, any of the following:

stomach or intestinal cancer.

inflammatory bowel disease including ulcerative colitis or Crohn’s

abdominal surgery, or infection or inflammation of the abdomen/
bowel (peritonitis).

stomach or intestinal ulcers.

blockage of the intestine or slow motility (movement) in the intestine
(e.g. constipation and stomach complications due to diabetes).

reduced liver or kidney function.

If you have reduced kidney function your doctor may decide to check
the level of calcium in your blood from time to time. If you have too little
calcium, you may then be given extra calcium.

Fosrenol with food and drink
Fosrenol should be taken with, or immediately after food. See Section 3 for
instructions on how to take Fosrenol.
Pregnancy and breast-feeding
Fosrenol should not be taken during pregnancy. If you are pregnant or
breast-feeding, think you may be pregnant, or are planning to have a baby,
ask your doctor or pharmacist for advice before taking this medicine.
As it is not known whether the drug can be transferred to a child in breast-milk,
you should not breast-feed whilst taking Fosrenol. If you are breast-feeding,
ask your doctor or pharmacist for advice before taking any medicines.
Driving and using machines
Dizziness and vertigo (a feeling of dizziness or “spinning”) are uncommon
side effects reported by patients taking Fosrenol. If you experience these
side effects it may affect your ability to drive or operate machinery.
Fosrenol contains Glucose
If you have been told by your doctor that you have an intolerance to some
sugars, contact your doctor before taking this medicinal product.
3. How to take Fosrenol
Always take this medicine exactly as your doctor or pharmacist has told
you. Check with your doctor or pharmacist if you are not sure.

You should take Fosrenol with, or immediately after food. Side effects
such as nausea and vomiting are more likely if you take Fosrenol before
your meal.

Reporting of side effects

The tablets must be chewed completely and not swallowed whole. To aid
with chewing, the tablets may be crushed. Additional fluid is not necessary.

You can also report side effects directly via the national reporting
system (see below). By reporting side effects you can help
provide more information on the safety of this medicine.

If you find chewing the tablets difficult, talk to your doctor as an oral
powder form of this medicine is available.
Your doctor will tell you how many tablets you must take with each meal
(your daily dose will be divided between meals). The number of tablets
that you take will depend on:

Your diet (the amount of phosphate in the food you eat).

Your blood phosphate level.

If you get any side effects, talk to your doctor or pharmacist.
This includes any side effects not listed in this leaflet.

United Kingdom
Yellow Card Scheme
ADR Reporting

To start with, the daily dose of Fosrenol will usually be 1 tablet with each
meal (3 tablets per day).

5. How to store Fosrenol

Every 2-3 weeks your doctor will check the level of phosphate in your blood
and may increase your dose until the level of phosphate in your blood is

This medicinal product does not require any special storage conditions.

Fosrenol works by binding phosphate from the food in your gut. It is very
important to take Fosrenol at every meal. If you change your diet, contact
your doctor as you may need to take extra Fosrenol. Your doctor will tell
you what to do in this case.
If you take more Fosrenol than you should
If you take too many tablets contact your doctor to assess the risk and
obtain advice. Symptoms of overdose may be nausea and headaches.
If you forget to take Fosrenol
It is important to take Fosrenol with every meal.
If you forget to take your Fosrenol tablets, then take the next dose with your
next meal. Do not take a double dose to make up for a forgotten dose.
4. Possible side effects
Like all medicines, this medicine can cause side effects, although not
everybody gets them.
Some side effects could be serious. If you get any of the following
side effects, seek immediate medical attention:

Rupture in the intestinal wall (signs include: severe stomach pain,
chills, fever, nausea, vomiting, or a tender abdomen). This is a
rare side effect (may affect up to 1 in 1,000 people).

Blockage in the intestine (signs include: severe bloating; abdominal
pain, swelling or cramps; severe constipation). This is an uncommon
side effect (may affect up to 1 in 100 people).

Other less serious side effects include the following:
Very Common side effects (may affect more than 1 in 10 people):

Nausea, vomiting, diarrhoea, stomach pain, headache, itching, rash.

Common side effects (may affect up to 1 in 10 people):

Constipation, heartburn, flatulence.

Hypocalcaemia (too little calcium in your blood) is also a common
side effect; the symptoms of which can include tingling in the hands
and feet, muscle and abdominal cramps or spasms of the facial and
feet muscles.

Please inform your doctor if you experience constipation. This can be an
early symptom of a blockage in your intestine.
Uncommon side effects (may affect up to 1 in 100 people):

Tiredness; feeling of discomfort; chest pain, weakness;
swollen hands and feet; body pain; dizziness; vertigo; belching;
inflammation of the stomach and intestines (gastroenteritis);
indigestion; irritable bowel syndrome; dry mouth; tooth disorders;
inflammation of the gullet or mouth; loose stools; increases in
certain liver enzymes, parathyroid hormone; aluminium, calcium
and glucose in the blood; increased or reduced phosphate level
in the blood; thirst; weight decrease; joint pain; muscle pain;
weakness and thinning of the bones (osteoporosis); lack of
and increased appetite; inflammation of the larynx; loss of hair;
increased sweating; taste disturbance and increased white blood
cell count.

Keep this medicine out of the sight and reach of children.

Do not use this medicine after the expiry date which is stated on the carton
and the bottle label. The expiry date refers to the last day of that month.
Medicines should not be disposed of via wastewater or household waste.
Ask your pharmacist how to throw away medicines you no longer use.
These measures will help protect the environment.
6. Contents of the pack and other information
What Fosrenol contains

The active substance is 250 mg, 500 mg 750 mg or 1000 mg
lanthanum (as lanthanum carbonate hydrate).


The other ingredients are dextrates (hydrated), colloidal anhydrous
silica and magnesium stearate.

What Fosrenol looks like and contents of the pack
Fosrenol is a white, round, bevelled-edged flat chewable tablet debossed
with either ‘S405/250’ (250 mg), ‘S405/500’ (500 mg), ‘S405/750’ (750 mg)
or ‘S405/1000’ (1000 mg) on one side of the tablet.
The tablets are supplied in plastic bottles of 90 tablets (250 mg); 20, 45 tablets,
or a multipack containing 90 (2 packs of 45) chewable tablets (500 mg);
15, 45 tablets, or a multipack containing 90 (6 packs of 15) chewable tablets
(750 mg); and 10, 15 tablets, or a multipack containing 90 (6 packs of 15)
chewable tablets (1000 mg).
Not all pack sizes may be marketed.
Marketing Authorisation Holder and Manufacturer
The marketing authorisation holder is:
Shire Pharmaceutical Contracts Ltd., 1 Kingdom Street,
London, W2 6BD, UK.
The manufacturer is:
Hamol Limited, Nottingham site, Thane Road, Nottingham, Nottinghamshire
NG90 2DB, UK.
For any information about this medicine, please contact the local
representative of the Marketing Authorisation Holder.
Shire Pharmaceuticals Limited, 1 Kingdom Street, London, W2
6BD, UK. Tel: +44 (0) 800 055 6614.
This medicinal product is authorised in the Member States of the EEA
under the following names:
Austria, Belgium, Bulgaria, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece,
Hungary, Iceland, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovak
Republic, Slovenia, Spain, Sweden, UK
Ireland, Italy



This leaflet was last revised in 07/2017.


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Source: Medicines and Healthcare Products Regulatory Agency

Disclaimer: Every effort has been made to ensure that the information provided here is accurate, up-to-date and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. This information has been compiled for use by healthcare practitioners and consumers in the United States. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate that the drug or combination is safe, effective or appropriate for any given patient. If you have questions about the substances you are taking, check with your doctor, nurse or pharmacist.