What is Cephulac?
Cephulac is a brand name for a medicine that contains lactulose, a synthetic sugar used to treat constipation and related bowel conditions. Lactulose works by drawing water into the colon and helping soften and stimulate bowel movements. [1]
What is Cephulac used for?
People commonly use lactulose products (including Cephulac) to:
- Relieve constipation (including chronic constipation) [1]
- Help manage hepatic encephalopathy (confusion caused by advanced liver disease) by reducing substances that build up in the gut and affect the brain [1]
How does Cephulac take effect?
Lactulose typically works gradually. For constipation, effects are often felt within hours to about a day, depending on the dose and the person. If it is being used for hepatic encephalopathy, dosing is usually adjusted to achieve the desired bowel movement pattern. [1]
How is Cephulac usually taken?
Cephulac dosing depends on the condition being treated and the product strength/formulation. It is usually taken by mouth, often once or split into multiple doses, with the goal of achieving regular, soft stools for constipation. For hepatic encephalopathy, clinicians often target a specific stool frequency. [1]
What side effects are common?
Lactulose commonly causes gastrointestinal effects such as:
- Bloating/gas
- Abdominal discomfort
- Diarrhea (especially if the dose is too high)
If diarrhea is severe or dehydration occurs, dosing usually needs review. [1]
When should you avoid or ask a clinician first?
You should get medical advice before using lactulose/this brand if you have:
- Unexplained severe abdominal pain
- Possible bowel obstruction
- Severe inflammatory bowel disease
- Situations where diarrhea could be dangerous (for example, frailty or significant dehydration risk)
Product labeling can vary by country, so checking the specific Cephulac leaflet for your location is important. [1]
Cephulac vs other constipation medicines
Cephulac (lactulose) differs from many constipation options:
- It is an osmotic laxative (pulls water into stool) rather than a stimulant laxative.
- Compared with some other osmotic agents (like polyethylene glycol), lactulose can cause more gas in some people, but it can still be effective.
Your best choice depends on the cause of constipation, tolerance, and any liver-related indication. [1]
What if it doesn’t work?
If constipation does not improve after taking Cephulac as directed, or if symptoms worsen, it’s important to seek medical guidance rather than escalating dose on your own. Persistent constipation can signal an underlying problem. [1]
Sources
- https://www.medicines.org.uk/emc/product/6142/smpc