EXHIBIT 99







March 21, 2019

United Cannabis Corporation
Attn: Earnest Blackmon, Chief Executive Officer

United  Cannabis  Corporation 301
Commercial  Road,  Unit D  Golden,
CO 80401
(303) 386-7104

Email: eb@unitedcannabis.us

Re: Resignation from the Board of Directors & CTO Role

Dear Ernie:

I am writing to tender my resignation from the Board of Directors and as the CTO
of United Cannabis Corp. (the "Company") effective March 21, 2019.

I am writing to confirm our  discussions  that I am stepping  down from  UCANN's
Board of Directors and as UCANN's Chief  Technical  Officer  effective  today. I
have  enjoyed my time in these  roles and am  looking  forward to my new role as
UCANN's Prana Specialist.

Sincerely,

/s/ Tony Verzura

Tony Verzura

cc: Chad Ruby
John Walsh