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LACTULOSE SOLUTION B.P.
Active substance(s): LACTULOSE LIQUID
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 doctoror 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 yours.
If you get any side effects, talk to your doctor or pharmacist or nurse. This includes any
possible side effects not listed in this leaflet. See section 4.
What is in this leaflet
What Lactolax is and what it is used for
What you need to know before you take Lactolax
How to take Lactolax
Possible side effects
How to store Lactolax
Contents of the pack and other information
What Lactolax is and what it is used for
Lactolax contains a laxative called lactulose. It makes the stool softer and easier to
pass, by drawing water into the bowel. It is not absorbed into your body.
What Lactolax is used for
Lactolax is used to treat constipation (infrequent bowel movements, hard and dry
Lactolax is used to treat hepatic encephalopathy (a liver disease causing confusion,
tremor, decreased level of consciousness including coma). This is also known as a
2. What you need to know before you take Lactolax
Do not take Lactolax if:
You are allergic (hypersensitive) to lactulose or any of the other ingredients of
Lactolax (listed in Section 6).
You have a rare problem called 'galactosaemia'.
You have an intestinal blockage caused by anything else but normal constipation,
digestive perforation or risk of digestive perforation.
Do not take Lactolax if any of the above apply to you. If you are not sure, talk to your doctor
or pharmacist before taking Lactolax.
Warnings and precautions:
Talk to your doctor or pharmacist before taking Lactolax if you suffer from any medical
conditions or illnesses, in particular:
if you suffer from unexplained stomach pains
if you are unable to digest lactose (sugar found in milk)
if you have diabetes
You should not take Lactolax if you suffer from:
• galactose or fructose intolerance
• glucose-galactose malabsorption
• Lapp lactase deficiency
If you have diabetes and are treated for hepatic encephalopathy, your dose of Lactolax will be
higher. This high dose contains a large amount of sugar. Therefore, your anti-diabetic
medicine may need to be adjusted.
Chronic use of unadjusted dosages (exceeding 2-3 soft stools per day) or misuse can lead to
diarrhoea and disturbance of the electrolytes balance.
During the treatment with laxatives you should drink sufficient amounts of fluids (approx. 2
litres/day, equal to 6-8 glasses).
If you take Lactolax for several days and there is no improvement in your condition
or if your symptoms worsen, please contact your doctor.
In special circumstances your doctor may prescribe Lactolax for a child, infant or baby. In
these cases your doctor will supervise the treatment carefully. Lactolax should only be given
to infants and smaller children if indicated as it can influence the normal reflexes for passing
Other medicines and Lactolax
Tell your doctor or pharmacist if you are taking, have recently taken or might take any other
Taking Lactolax with food and drink
Lactolax can be taken with or without food. There are no restrictions on what you can eat or
Pregnancy, breast-feeding and fertility
Talk to your doctor or pharmacist before taking this medicine if you are pregnant, might
become pregnant or are breast-feeding. Lactolax can be used during
pregnancy and when breast-feeding if necessary. No effects on fertility are to be expected.
Driving and using machines
Lactolax has no or negligible influence on your ability to drive safely or use machines.
Important Information about some of the Ingredients of Lactolax
Lactolax may contain small amounts of milk sugar (lactose), galactose, epilactose or fructose.
If you have been told by your doctor that you have an intolerance to some sugars, contact
your doctor before taking this medicine.
3. How to take Lactolax
Always take Lactolax exactly as described in this leaflet or as your doctor or pharmacist have
told you. Check with your doctor or pharmacist if you are not sure.
Taking this medicine
• Take Lactolax from a spoon.
• You can mix it with fruit juice or water. It is recommended that you drink plenty of
fluids (approximately 6-8 glasses throughout the day)
• Swallow the dose immediately. Do not keep it in your mouth as the sugar content may
lead to tooth decay, particularly if Lactolax is taken for long periods.
• Lactolax takes 2 to 3 days to start working.
• After this time you may be able to reduce the dose you take according to your needs.
Adults and adolescents: The starting dose is 15-45ml per day. After this the dose can be
adjusted to 15-30ml daily.
Children 7 to 14 years: The starting dose is 15ml. After this the dose can be adjusted to 1015ml daily.
Children 1 to 6 years: The usual dose is 5-10ml daily.
Infants under 1 year: The usual dose is up to 5ml daily.
Use in Children: Use of laxatives in children, infants, and babies should be exceptional and
under medical supervision because it can influence the normal reflexes for passing stools.
Please do not give Lactolax to children (under 14 years) before consulting your doctor for
prescription and careful supervision.
Hepatic encephalopathy (adults only)
Adults: The usual starting dose is 3 to 4 times a day of 30-45ml.
Use in Children: No information is available for treatment of children (newborn to 18 years
of age) with hepatic encephalopathy.
Use in elderly patients and patients with renal or hepatic insufficiency: No special dosage
If you take more Lactolax: than you should
If you take more Lactolax than you should stop taking Lactolax and talk to a doctor or
pharmacist. You may have diarrhoea and abdominal pain.
If you forget to take Lactolax
If you forget a dose of Lactolax, do not worry. Just take the next dose at the usual time. Do
not take a double dose to make up for a forgotten dose.
If you stop taking Lactolax
Do not stop or change the treatment before talking to your doctor.
If you have any further questions on the use of this product, ask your doctor or pharmacist.
4. Possible side effects
Like all medicines, Lactolax can cause side effects, although not everybody gets them The
following side effects have been reported with Lactolax:
Very common (may affect more than 1 in 10 people)
Common (may affect up to 1 in 10 people)
nausea (feeling sick)
Uncommon (may affect up to 1 in 100 people)
• electrolyte imbalance due to diarrhoea
Flatulence may occur during the first few days of treatment. As a rule it disappears after a
few days. When dosages higher than instructed are used, abdominal pain and diarrhoea may
occur. In such a case the dosage should be decreased.
If you use high doses (normally only associated with hepatic encephalopathy, HE) for an
extended period of time, you may experience an electrolyte imbalance due to diarrhoea.
Reporting of side effects
If you get any side effects, talk to yourdoctor or pharmacist. This includes any possible side
effects not listed in this leaflet. You can also report side effects directly via United Kingdom
Yellow Card Scheme Website: www.mhra.gov.uk/yellowcard. By reporting side effects you
can help provide more information on the safety of this medicine.
5. How to store Lactolax
Keep this medicine out of the reach and sight of children.
Do not use Lactolax after the expiry date which is stated on the carton or bottle.
The expiry date refers to the last day of that month
Do not store above 25°C. Do not refrigerate or freeze.
Medicines should not be disposed of via wastewater or household waste. Ask your
pharmacist how to dispose of medicines no longer required. These measures will help
to protect the environment.
6. Contents of the pack and other information
What Lactolax contains
• The active substance in Lactolax is lactulose. Each 5ml of Lactolax contains 3.35g of
• Lactolax does not contain any other ingredients. However, it may contain small
amounts of other sugars, such as lactose, galactose, epilactose and fructose.
What Lactolax looks like and contents of the pack
• Lactolax is a clear, viscous liquid, colourless to brownish yellow liquid.
Lacotulose solution is available in:
Amber glass bottles with screwcaps of 200 ml, 300 ml, and 500 ml.
Plastic bottles with screwcaps of 200 ml, 300 ml, 500 ml, 1000 ml and 5000 ml.
Not all pack sizes may be marketed.
Marketing Authorisation Holder and Manufacturer
Marketing Authorisation Holder: Fannin (UK) Limited, 42-46 Booth Drive, Park Farm
South, Wellingborough, NN8 6GT, UK
Manufacturer responsible for batch release: Fannin (UK) Limited, 42-46 Booth Drive,
Park Farm South, Wellingborough, NN8 6GT, UK
This information is available in alternative formats upon request.
This leaflet was last revised in September 2014
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.