TheraRadar
Data updated: May 26, 2026

GENERLAC (lactulose)

Osmotic Activity
Hepatology Approved 1996-10-31

GENERLAC is indicated for the treatment of Hepatic Encephalopathy.

Source: FDA Label • CHARTWELL RX
1
Indication
--
Phase 3 Trials
29
Years on Market

Details

Status
Prescription
First Approved
1996-10-31
Routes
ORAL, RECTAL
Dosage Forms
SOLUTION

Companies

Active Ingredient: LACTULOSE

GENERLAC Approval History

1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
Original
New Indication
New Form
Label Update
6 FDA actions from 1996 to 2001
Nov 2001 SUPPL
Label · Labeling
Apr 2001 SUPPL
Label · Labeling
Apr 2000 SUPPL
Mfg · Manufacturing (CMC)

What GENERLAC Treats

1 indications

GENERLAC is approved for 1 conditions since its original approval in 1996. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Hepatic Encephalopathy
Source: FDA Label

GENERLAC Competitive Set

Pro

Three rings of competition based on shared molecular targets and treated indications.

Indication competitors

2

Same indication, different mechanism — what else might this patient receive?

Filters applied: drops same-active-ingredient (505(b)(2) reformulations), route-mismatch (topical vs systemic), and cross-therapeutic-area matches in same-indication rings.

Drugs Similar to GENERLAC

FDA-approved drugs for similar conditions. Compare mechanisms and indications to understand treatment alternatives.

NEOMYCIN SULFATE
NEOMYCIN SULFATE
1 shared
CHARTWELL MOLECULAR
Shared indications:
Hepatic Encephalopathy
XIFAXAN
RIFAXIMIN
1 shared
SALIX PHARMS
Shared indications:
Hepatic Encephalopathy
📋

Clinical Trial Registry

21 trials
Trial Sponsor ID Phase Status Title
NCT07534995 CACMREZZ2025-A-10 Ph 3 not yet recruiting A Prospective, Multicenter, Randomized, Parallel-controlled, Superiority Trial
NCT07354100 (BLOOM) IRB25-1467 Ph 1, Ph 2 not yet recruiting Lactulose to Improve Gut Health in Cancer Patients Receiving Immunotherapy
NCT05794555 HUM00225275 CER-2021C3-24907 Ph 3 completed LiveSMART Trial to Prevent Falls in Patients With Cirrhosis
NCT05754996 CL (3202) Ph 3 completed Efficacy and Safety of Nifuroxazide in the Treatment of Hepatic Encephalopathy in Egyptian Patients With Liver Cirrhosis
NCT07037394 ARGO-HEC 187-2023-/PHEC Ph 4 completed A Trial for Comparing Rifaximin, Probiotic and L-ornithine- L Aspartate With Lactulose in Overt Hepatic Encephalopathy.
NCT06538077 HERB PGI/HEP/567 Ph 4 recruiting BCAA vs. Rifaximin in Patients With Cirrhosis for Secondary Prophylaxis of HE
NCT05700695 IEC/04/2022-2385 Ph 1 completed Intravenous BCAA for HE in ACLF (BCAA-HE-ACLF)
NCT06835361 Clotrimazole+Lactulose-II/III Ph 2, Ph 3 recruiting Efficacy and Safety of Clotrimazole+Lactulose Vaginal Suppositories Vs. Clotrimazole Monotherapy in Adult Women with Candidal Vaginitis/Vulvovaginitis
NCT06748638 DZQH-KYLL-24-35 Ph 4 enrolling by invitation Clinical Study on the Application of Lactulose Combined with Linaclotide in Bowel Preparation for Colonoscopy
NCT05061992 results posted HUM00204056 Ph 2, Ph 3 completed A Trial to Improve Quality of Life in People With Cirrhosis
NCT04238416 BCAA-ACLF IEC-08/2019-1336 Ph 1 completed Intravenous Branched Chain Amino Acids for Hepatic Encephalopathy in ACLF
NCT00748904 0801009635 Ph 4 withdrawn Rifaximin Versus Lactulose in Renal Failure
NCT03833999 MOLID 85-1807 Ph 4 completed Mode of Action of Ondansetron, a 5-HT Receptor 3 Antagonist, in Lactulose Induced Diarrhoea
NCT01842581 results posted RFHE4044 Ph 4 completed The Safety/Efficacy of Rifaximin With/Without Lactulose in Participants With A History of Recurrent Hepatic Encephalopathy
NCT02158182 DI/14/107/03/028 Ph 4 completed Lactulose, L-ornithine L-aspartate, or Rifaximin Versus Placebo for Preventing Hepatic Encephalopathy in Variceal Bleeding
NCT02228616 CR102381 PRUCOP4005, PRU-C-13-CN-004-V02 Ph 4 completed Efficacy and Safety of Prucalopride in Combination With Polyethylene Glycol or Lactulose in Women With Chronic Constipation
NCT02086825 11-00665 Ph 3 withdrawn A Randomized Comparison of Rifaximin Versus Lactulose in Hospitalized Cirrhotic Patients With Renal Failure
NCT00508482 results posted 2006BAI12B05-1 Ph 2 completed A Clinical Standardization Study of the Preferred Acupuncture Treatment Protocol to Treat Functional Constipation
NCT00811434 MHE results posted 0808-19 Clarian Grant VFR-279 Ph 2 terminated Study of Lactulose in Children With Chronic Liver Disease
NCT01842113 Rifaximin and Nutrition Ph 4 terminated Quality of Life and Nutritional Improvements in Cirrhotic Patients
NCT01008293 MHE MHE-VSL3-YKJ_AIIMS_ver1 Ph 2, Ph 3 completed Effect of Probiotics in Treatment of Minimal Hepatic Encephalopathy (MHE) and Health Related Quality of Life
🔬

Active Pipeline

Pro

Ongoing clinical trials by development phase

Loading...

Key Completed Trials

Pro

Completed studies with published results, ranked by significance

Loading...
📊

Trial Timeline

Full development history with FDA approval milestones

|
Loading...
Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

GENERLAC FDA Label Details

Indications & Usage

GENERLAC is indicated for the treatment of Hepatic Encephalopathy.

Track GENERLAC with TheraRadar Pro

Watchlist alerts, full database access, CSV exports across 14,000+ drugs.

Upgrade to Pro

Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.