Abstract: The present invention provides methods for treating OFF episodes in a Parkinson's Disease patient comprising administering levodopa to the pulmonary system of a patient wherein after administration, the patient's Unified Parkinson's Disease Rating Scale (UPDRS) Part 3 score is improved by, for example, at least about 5 points as compared to placebo control and/or as compared to the patient's UDPRS Part 3 score prior to administration. The invention also provides methods of reducing mean daily OFF time in a Parkinson's patient.

Abstract: The present invention provides methods for treating OFF episodes in a Parkinson's Disease patient comprising administering levodopa to the pulmonary system of a patient wherein after administration, the patient's Unified Parkinson's Disease Rating Scale (UP-DRS) Part 3 score is improved by, for example, at least about 5 points as compared to placebo control and/or as compared to the patient's UDPRS Part 3 score prior to administration. The invention also provides methods of reducing mean daily OFF time in a Parkinson's patient.

Abstract: The present invention provides methods of reducing the inter-patient variability of levodopa plasma concentrations in a population of Parkinson's disease patients. The methods of the invention comprise pulmonary administration of levodopa at therapeutically effective concentrations such that the inter-patient variability of levodopa plasma concentrations at time periods ranging from about 10 minutes post inhalation to about 60 minutes or more post inhalation have less than a 50% coefficient variation. The methods of the invention are particularly useful for treatment of motor fluctuations which arise as a side effect of L-Dopa therapy.

Abstract: The present invention provides methods of reducing the inter-patient variability of levodopa plasma concentrations in a population of Parkinson's disease patients. The methods of the invention comprise pulmonary administration of levodopa at therapeutically effective concentrations such that the inter-patient variability of levodopa plasma concentrations at time periods ranging from about 10 minutes post inhalation to about 60 minutes or more post inhalation have less than a 50% coefficient variation. The methods of the invention are particularly useful for treatment of motor fluctuations which arise as a side effect of L-Dopa therapy.

Abstract: The present invention provides methods of providing rapid relief of motor fluctuations in a Parkinson's disease patient. The methods of the invention comprise pulmonary administration of levodopa by inhalation at therapeutically effective concentrations such that the patient's plasma levodopa concentration increases by at least about 200 ng/ml within 10 minutes or less post inhalation as compared to the concentration of levodopa in the patient's plasma prior to inhalation of the levodopa and wherein the patient's plasma concentration remains increased by at least about 200 ng/ml for a time period of at least 15 minutes after inhalation. The methods of the invention are particularly useful for treatment of motor fluctuations which arise as a result of poorly controlled levodopa plasma levels in a patient.