Lactulose (Duphalac)
$31.54
Duphalac (Lactulose) is a gentle laxative that softens stools to relieve constipation, and is also used in certain liver conditions.
Drug Information
11 reviews for Lactulose (Duphalac)
Duphalac contains Lactulose.
Lactulose is a gentle laxative in liquid form. It softens stools to relieve constipation. It is safe for long-term use and can be used by children, adults and pregnant women.
It is also used in hospitals for hepatic encephalopathy, a brain problem caused by severe liver disease.
What is it used for?
- Constipation
- Hepatic encephalopathy (confusion caused by liver disease)
How does it work?
Lactulose is a sugar that is not absorbed. It draws water into the bowel, which softens the stool and makes it easier to pass. In liver disease, it also lowers ammonia levels.
This information is written in simple words to help you understand this product. It does not replace advice from your doctor or pharmacist.
Read these points before you start. If any of them apply to you, talk to your doctor or pharmacist first.
- Do not take it if you have galactosaemia or a blocked bowel.
- It contains small amounts of sugars. Tell your doctor if you have diabetes.
- Tell your doctor if you have lactose intolerance.
- Tell your doctor or pharmacist about every other medicine, vitamin or herbal product you use.
- Keep this product out of the reach and sight of children.
Like all medicines, Duphalac can cause side effects, but not everybody gets them.
Common side effects
- Wind and bloating
- Stomach cramps
- Diarrhoea (the dose may be too high)
- Feeling sick
These are usually mild and often get better as your body gets used to it. Tell your doctor if they bother you or do not go away.
Stop using it and get medical help straight away if you notice:
- Severe diarrhoea with dizziness or weakness (dehydration)
- Signs of an allergic reaction
This is not a complete list. If you notice anything unusual, ask your doctor or pharmacist.
- Measure the dose with the measuring cup or spoon.
- For constipation, adults usually take 15 ml twice a day. Your doctor may adjust it.
- It can take 2 to 3 days to work.
- You can take it with water, fruit juice or with meals. Drink plenty of fluids.
If you miss a dose: Take it as soon as you remember, unless it is nearly time for your next dose. Never take two doses at once.
If you use too much: Contact your doctor, a poison control centre or your local emergency number straight away, even if you feel fine. Take the pack with you.
How to store it: Store below 25°C (77°F). Do not freeze. Keep the bottle closed.
- QHow long does Duphalac take to work?
- A
Usually 2 to 3 days.
- QIs Duphalac safe in pregnancy?
- A
Yes, it is often used for constipation in pregnancy.
- QWhy do I have wind on Duphalac?
- A
The bacteria in your gut break down lactulose, which makes gas. It usually improves after a few days.

Hao Saleh –
Good, careful packing with no dents or tears. It was cheaper than my usual place, and the service was just as good. Everything was in order when I opened the box. I would order here again.
Sebastian Lee –
Ordering Lactulose took only a few minutes. It arrived on time, just as I expected. It was what I expected when I opened it.
Nicolas Wagner –
This was my second order from the site. Good value for the money. Another good thing: the layout makes it easy to find what you are after. Service was courteous from start to finish. I would order Lactulose here again.
Mariana Li –
I got the correct item the first time, with no mix-ups. I liked that the site did not make things complicated. The Lactulose I ordered was packed neatly and nothing was damaged.
Abigail Scott –
I placed an order last week and it was handled well. The Lactulose was priced fairly compared to other sites. Honestly, what arrived was just as listed on the site.
Tariq Ross –
I needed to place an order in a hurry and this site made it easy. Browsing the site was pleasant and the search worked well. The team kept me updated on my order status. Would recommend this site to anyone looking for Duphalac.
Dylan Müller –
My order went through without any problems. Tracking worked well and the delivery went exactly as planned. Will come back to this site when I need Duphalac again.
Jack Dlamini –
Ordered Lactulose a few days ago and wanted to leave a quick review. It got to my door right when they said it would. Nothing negative to say, it was a good one.
Theo Ahuja –
I placed my first order here and it went smoothly. The confirmation emails were clear and arrived quickly. It was dispatched fast and reached me soon after.
Mariana Popov –
I decided to try this site and it turned out well. No complaints about the product. I got a helpful reply when I asked about my order.
Petra Long –
I was a bit unsure at first, but ordering here worked out fine. The quality looked good to me. It came in a reasonable amount of time.