Bringing together leading researchers in the study of medicinal cannabis

Zelda Therapeutics has been formed to bring together some of the world’s leading researchers and clinicians active in the study and use of medicinal cannabis to treat a variety of ailments.

We believe that by investing in rigorous research and clinical trials we can generate significant value for all stakeholders as the world re-acquaints itself with this ancient medicine.


Board of Directors

Harry Karelis

Mara Gordon

Jason Peterson

Dr Stewart Washer

Medical Advisory Board

Professor Manuel Guzmán

Professor Cristina Sánchez

Dr Joe Goldstrich

Dr Noah Federman

Management & Advisors

Dr Patty Washer

Amanda Soogun

Nicole Fernandes





Cannabis 101

  • Cannabis is a flowering plant containing at least 85 types of cannabinoids with evidence suggesting it has been used for medicinal purposes since antiquity.
  • Cannabinoids are the chemical compounds secreted by cannabis flowers and include tetrahydrocannabinol (THC) and cannabidiol (CBD).
  • When cannabis is consumed, cannabinoids bind to receptor sites in the brain and body mimicking naturally occurring compounds in the body known as endocannabinoids.

  • Different cannabinoids have different effects depending on which receptors they bind to. For example, THC binds to CB1 and CB2 receptors in the brain and other body sites, whereas CBD has a low affinity for these receptors but conceivably stronger affinity for other -as yet unknown- receptors. Different types of medical effects can be achieved through targeting different receptors using differing quantities of cannabinoids (eg. THC vs CBD).
  • This concept is the cornerstone of cannabis as a medicine.

Latest Releases

  • Breast Cancer and Cannabis Treatments

    20 July 2017

    View blog post

  • ASX Announcement: Zelda enters strategic agreement with Knop Laboratories

    15 June 2017

    View announcement

  • Dr. Stewart Washer talks with Health Professional Radio about recent pre-clinical breast cancer results

    08 June 2017

    View interview

  • Positive results from pre-clinical breast cancer studies (GIF)

    06 June 2017

    View animated GIF


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