December 5, 2000

Neurochem announces the achievement of an important drug development milestone for Alzheimer's Disease

Neurochem Inc. (TSX : NRM) announced today the achievement of an important drug development milestone for the advancement of an anti-amyloid drug candidate, for the treatment of Alzheimer's Disease. In accordance with the ongoing collaborative agreement with H. Lundbeck A/S ("Lundbeck"), the achievement of this milestone triggers a number of milestone and research support payments from Lundbeck including an equity purchase of US $ 2.5 million.

"We are delighted with our agreement with Neurochem, a company that is very active within the area of amyloid research. In the year of our partnership Neurochem has made significant progress in its development of a novel treatment for a neurological disease, making this collaboration an excellent opportunity to help patients afflicted by Alzheimer's Disease," remarked Executive Vice-President R&D of Lundbeck Dr. Claus Braestrup. "We look forward to working closely with Neurochem in the years to come."

In a "proof-of-concept" study, Neurochem's drug candidate was administered in genetically-engineered mice expressing the human amyloid precursor protein (hAPP) to determine the curative potential of this drug candidate. The mice were developed at the Centre for Research in Neurodegenerative Diseases at the University of Toronto (Canada). Using this aggressive hAPP transgenic model of Alzheimer's Disease, a compound was shown to significantly reduce the number and size of brain amyloid plaques , to decrease the inflammatory reaction in the brain and to maintain a higher survival rate in treated mice. Neurochem anticipates submitting shortly the scientific findings for publication in a peer-reviewed journal.

A preliminary phase I single dose study with the compound in human volunteers has already provided information re. tolerability and pharmacokinetics. Further, the compound has demonstrated a good safety and pharmacokinetic profile in preclinical studies. The Company believes that this is the first time an oral drug candidate with a documented low toxicity potential has been shown to reduce the development of amyloid plaque and inflammatory reactions in an animal model of Alzheimer's Disease.

"These findings represent a very important step towards the further development of the compound as a therapeutic treatment in Alzheimer's Disease. This milestone payment will further support the important drug development activities required to advance this promising treatment of brain amyloidosis," said Dr. Louis R. Lamontagne, President and CEO of Neurochem. "Lundbeck's expertise in the development of therapeutic treatments for major diseases of the central nervous system will be instrumental to the on-going scientific and drug development activities for this novel class of potential therapeutic drugs."

About Lundbeck

H. Lundbeck A/S is an international pharmaceutical company engaged in the research and development, production, marketing and sale of drugs for the treatment of psychiatric and neurological diseases. The Company had consolidated net turnover of DKK 4.2 billion in 1999 and employs approximately 3200 people. Further information is available at www.lundbeck.com

The Lundbeck group is headquartered at Ottiliavej 9, DK-2500 Valby, Copenhagen, Denmark.
Tel. +45 3630 1311.

About Neurochem

Neurochem is a leader in the development of novel, proprietary compounds that inhibit the formation, deposition and toxic effects of amyloid fibrils within the body. Neurochem's research team has been working with international amyloid experts on the development of therapeutic cures to amyloid-related diseases, including Alzheimer's Disease, Secondary Amyloidosis, Diabetes Type II and Hemorrhagic Stroke due to Cerebral Amyloid Angiopathy. Neurochem has advanced three drug candidates to clinical trials for Alzheimer's Disease, Secondary Amyloidosis and Hemorrhagic Stroke.

At present, the Company employs over 60 people and is located in Saint-Laurent, Canada (www.neurochem.com).

All of the statements contained in this news release, other than statements of fact which are independently verifiable at the date hereof, are forward-looking statements. Such statements, based as they are on the current expectations of management, inherently involve numerous risks and uncertainties, known and unknown. Some examples of known risks are: the impact of general economic conditions, general conditions in the pharmaceutical industry, changes in the regulatory environment in the jurisdictions in which Neurochem does business, stock market volatility, fluctuations in costs, and changes to the competitive environment due to consolidation or otherwise. Consequently, actual future results may differ materially from the anticipated results expressed in the forward-looking statements.

For further Information, please contact:
Dr. Lise Hébert
Vice President, Corporate Communications
lhebert@neurochem.com

275 Armand-Frappier
Laval (Quebec)
H7V 4A7
Tel: (450) 680-4500
Fax: (450) 680-4501

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