November 28, 2002

Dr. Louis R. Lamontagne announces decision to step down.
Dr. Francesco Bellini chosen CEO of Neurochem.

Neurochem Inc. (TSX : NRM) today announced that Dr. Louis R. Lamontagne, President and CEO, will step down at the next annual general meeting of shareholders to be held December 11, 2002. Dr. Francesco Bellini, presently Chairman of the Board also assumes the position of CEO. Dr. Lamontagne will remain a member of Neurochem's Board and will become a special advisor to the Company.

"I have steered Neurochem from the research and development phase to a mature and diversified product pipeline," said Dr. Lamontagne. "With product candidates in Phase II and Phase III clinical trials, the Company is now narrowing the gap to commercialization. As our products move closer to the market, greater emphasis will be put on this aspect of the business."

"Neurochem's potential for success is in large part due to the remarkable contribution of Dr. Lamontagne who led the Company from early research to mid and late-stage development for its three key product candidates and to the strategic positioning of Neurochem for the next stage of growth," said Dr. Bellini. "The Board of Directors is very grateful to him and very pleased that he is staying on as a board member and a special advisor."

Dr. Lamontagne joined Neurochem in 1995, when the Company had 3 full-time employees and academic researchers at Queen's University. At that time, it was still at an early stage of research into amyloid-related diseases. During his tenure, the Company grew to 80 highly competent employees and succeeded in raising, through private placements and Neurochem's Initial Public Offering, over $80 million to finance its innovative research and drug development programs. Dr. Lamontagne also obtained support from several governmental agencies including Technology Partnerships Canada for Neurochem's ground-breaking drug candidate, Alzhemed™, a promising therapeutic approach for the prevention and treatment of Alzheimer's disease.

The Company now has one major product, Fibrillex™ in Phase II/III clinical trials, two more, Alzhemed™ and Cerebril™ in a Phase II trial and two additional product candidates at the pre-clinical stage. Fibrillex™ is for the treatment of Secondary Amyloidosis, a life threatening orphan disease for which no effective treatment exists and which most often results in kidney failure in the hundreds of thousands of patients who suffer from it. Alzhemed™ is a new class of disease-modifying drug for the treatment of Alzheimer's Disease and Cerebril™ is the Company's lead drug candidate for the treatment of Hemorrhagic Stoke. Neurochem's pipeline of products at the pre-clinical stage includes one for the treatment of Diabetes Type 2 and a program for the treatment of recurrent seizures induced by Traumatic Brain Injury.

About Neurochem

Neurochem is an industry leader in the development of therapeutic drugs for central nervous system (CNS) and amyloid-related diseases associated with aging. The Company has to date advanced three drug candidates to clinical trials: Fibrillex™, for the life-threatening orphan disease, secondary amyloidosis in a pivotal Phase II/III clinical trial, Alzhemed™, for the treatment of Alzheimer's Disease advancing to Phase II clinical trials, and Cerebril™, for hemorrhagic stroke also advancing to Phase II clinical trials. The Company has built a strong product pipeline by developing a novel, proprietary series of compounds that inhibit the formation, deposition and toxic effects of amyloid fibrils within the body. Neurochem's overall therapeutic programs target CNS disorders including Alzheimer's disease, epileptic seizures caused by head trauma or acute brain injury, and hemorrhagic stroke (due to cerebral amyloid angiopathy), and other life-threatening diseases including systemic amyloidosis and amyloid-associated diabetes type 2. (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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