This invention provides a method of treating a patient afflicted with a neurodegenerative disorder e.g. Huntington s disease comprising administering to the patient rasagiline as an add on therapy to or in combination with pridopidine. This invention also provides a package and a pharmaceutical composition comprising rasagiline and pridopidine for treating a patient afflicted with a neurodegenerative disorder. This invention also provides rasagiline for use as an add on therapy or in combination with pridopidine in treating a patient afflicted with a neurodegenerative disorder. This invention further provides use of rasagiline and pridopidine in the preparation of a combination for treating a patient afflicted with a neurodegenerative disorder.