Lactulose Biogaran (Lactulose, Liquid)

Lactulose is an osmotic laxative used to manage conditions related to bowel motility and hepatic ammonia accumulation.

• Constipation: Provides osmotic activity that draws water into the colon, facilitating softer stools and regular bowel movements.
• Hepatic encephalopathy: Reduces intestinal absorption of ammonia, helping to lower blood ammonia levels and improve neurological symptoms.
• Prevention of hepatic encephalopathy recurrence: Maintains lower ammonia levels to reduce the risk of symptom relapse.

• Lactulose is a synthetic disaccharide that is not absorbed in the small intestine. In the colon, bacterial enzymes hydrolyze it to short‑chain fatty acids, which increase the osmotic pressure within the lumen, drawing water into the bowel and softening stool. The acidic environment also converts ammonia (NH3) to ammonium (NH4+), limiting its absorption and thereby decreasing systemic ammonia levels.

Lactulose may cause a range of adverse reactions, most of which are related to its osmotic activity in the gastrointestinal tract.

Common Side Effects

• Abdominal bloating: Sensation of fullness or swelling in the abdomen.
• Flatulence: Increased intestinal gas production.
• Diarrhea: Loose, watery stools, especially at higher doses.
• Nausea: Feeling of sickness or urge to vomit.
• Abdominal cramps: Intermittent painful contractions of the gut.
• Thirst: Increased desire for fluids.

Serious or Rare Side Effects

• Severe electrolyte imbalance: Marked changes in sodium, potassium, or magnesium levels.
• Dehydration: Significant loss of body water due to excessive diarrhea.
• Allergic reaction: Rash, itching, swelling, or difficulty breathing.
• Severe abdominal pain: Persistent, intense pain requiring medical evaluation.
• Worsening hepatic encephalopathy: Unexpected deterioration of neurological status.

Before initiating Lactulose therapy, consider the following safety measures.

• Assess renal function: Impaired kidneys may affect fluid and electrolyte balance.
• Monitor electrolytes: Regular checks of sodium, potassium, and magnesium are advised.
• Use caution in diabetes: Lactulose contains carbohydrate fragments that may affect glucose control.
• Avoid abrupt discontinuation: Sudden stop may lead to rebound constipation.
• Store at ambient temperature: Keep below 25 °C in the original container, protect from moisture and direct sunlight.

Lactulose can interact with other medications, altering efficacy or safety.

Major Interactions (Avoid)

• Antibiotics such as rifaximin: May reduce Lactulose's effectiveness in lowering ammonia.
• Magnesium‑containing laxatives: Additive osmotic effect can cause excessive diarrhea.
• Diuretics: Increased risk of electrolyte disturbances.

Moderate Interactions (Monitor Closely)

• Antacids containing aluminum or calcium: May bind Lactulose and diminish its activity.
• Probiotics: May modify gut flora, potentially affecting Lactulose metabolism.
• Oral hypoglycemic agents: Carbohydrate content of Lactulose could influence blood glucose levels.