This study aims to evaluate the impact of oral nutritional supplementation (ONS) and a psychomotor rehabilitation program on nutritional and functional status of community-dwelling patients with Alzheimer’s disease (AD). A 21-day prospective randomized controlled trial was conducted and third intervention group performed a psychomotor rehabilitation program. Patients were followed up for 180 days. Mean (standard deviation) score of Mini Nutritional Assessment (MNA) increased both in the nutritional supplementation group (NSG; n = 25), 0.4 (0.8), and in the nutritional supplementation psychomotor rehabilitation program group (NSPRG; n = 11), 1.5 (1.0), versus −0.1 (1.1) in the control group (CG; n = 43), P < .05. Further improvements at 90-day follow-up for MNA in NSG: 1.3 (1.2) and NSPRG: 1.6 (1.0) versus 0.3 (1.7) in CG (P < .05) were observed. General linear model analysis showed that the NSG and NSPRG ▵MNA score improved after intervention, at 21 days and 90 days, was independent of the MNA and Mini-Mental State Examination scores at baseline (Ps > .05). The ONS and a psychomotor rehabilitation program have a positive impact on long-term nutritional and functional status of patients with AD.