Safety and Efficacy of Nabilone in Alzheimer's Disease

Participants randomized to nabilone treatment arm, will undergo a one-week placebo washout, followed by 6 weeks of nabilone treatment (weeks 1-6). Participants will then receive a one-week placebo washout (week 7), before receiving 6 weeks of placebo treatment (weeks 8-14).

Participants randomized to placebo arm, will undergo a one-week placebo washout, followed by 6 weeks of drug matched placebo (weeks 1-6). Participants will then receive a one-week placebo washout (week 7), before receiving 6 weeks of nabilone treatment (weeks 8-14).