CBD May Help Ease Agitation in Late-Stage Alzheimer’s

A new clinical trial shared at the Alzheimer's Association International Conference (AAIC) in London found that a medical mix of THC and CBD may quickly reduce end-of-life agitation in people with late-stage Alzheimer’s or other forms of dementia. In the Phase 2 LiBBY trial (Life’s End Benefits of Cannabidiol and Tetrahydrocannabinol), nearly 90% of people who received the treatment had lasting behavior improvements after 12 weeks, with signs of relief starting in just two weeks. [1, 2]

The findings could point to a gentler option than strong sedatives or antipsychotics, which can come with serious side effects. [1, 2]

Key Takeaways from the LiBBY Study

The study followed 120 hospice-eligible people at 10 medical centers across the U.S. Researchers tested an oral, fast-acting oil suspension. [1, 2]

What Was Measured	What the Study Found
Symptom Improvement	90% of treated patients had less agitation, compared with less than 25% of those who got a placebo.
How Fast It Helped	People started showing measurable improvement within 2 weeks.
Drop in Agitation	The treatment group saw a 6.27-point bigger drop on the Cohen-Mansfield Agitation Inventory score.
Safety and Side Effects	The treatment looked about as safe as placebo and did not make cognition or movement worse.

Overall, the LiBBY study offers an encouraging early look at a possible new way to ease agitation in late-stage Alzheimer’s and dementia. The results are promising, especially because relief appeared quickly and did not seem to worsen thinking or movement, but larger studies are still needed before doctors know how widely this treatment should be used.

 CBD may be especially interesting here because it does not cause the same “high” as THC, and researchers are studying it for calming, anti-inflammatory, and brain-related effects. For dementia-related agitation, the hope is that CBD—especially in a controlled formula—could help people feel calmer without adding heavy sedation or making thinking and movement worse.