
Founded in 2019, Green Nile provides families with education in integrative oncology and cannabis medicine. We are dedicated to helping pet owners make informed, thoughtful decisions in collaboration with their veterinary care team.
Grounded in current science, clinical experience, and compassionate care, Green Nile is committed to supporting longevity, improved comfort, quality of life, and overall wellbeing.
With our years of experience, including hundreds of patients treated with an integrative medicine approach, we are dedicated to providing a supportive, educational consultation that will arm pet parents with the tools they need to make an informed decision for their beloved pet.
We are honored to be part of your pets team.

DVM, DACVIM (Oncology), CVCH
Dr. Trina Hazzah was born and raised in Washington, DC. She earned her Doctor of Veterinary Medicine from Tuskegee University School of Veterinary Medicine in 2006, completed a small animal internship at Red Bank Veterinary Hospital in New Jersey, and went on to complete a three-year residency in medical oncology at the Veterinary Oncology and Hematology Center in Connecticut. She has also completed the requirements to become a Certified Veterinary Chinese Herbalist through the Chi Institute of Traditional Chinese Veterinary Medicine.
As one of the few integrative veterinary oncologists in the world, Dr. Hazzah combines her experience in conventional oncology with Western and Eastern herbal medicine, nutritional therapy, various supplements, and cannabis medicine to support the quality and longevity of her patients’ lives. Her work is guided by a commitment to improving outcomes for pets and their families through thoughtful, individualized care.
Dr. Hazzah’s interest in cannabis medicine grew from her search for more effective integrative approaches for veterinary cancer patients, and over the past decade she has treated hundreds of patients with cannabis and other alternative therapies.
She has lectured extensively to veterinarians, conducted research, published peer-reviewed articles, co-authored oncology and cannabis-related textbooks, and served as the previous president and co-founder of the Veterinary Cannabis Society, the first U.S.-based 501(c)(3) organization dedicated to building awareness of cannabis as medicine for pets. After nearly 15 years in medical oncology, she shifted her focus to integrative oncology and cannabis medicine and founded Green Nile, Inc.
Certified Veterinary Chinese herbalist (CVCH)
Medical Oncology Residency
Internship
Magna Cum Laude
Bachelor Of Science Degree in Biology; Cum Laude
Chief Veterinary Officer Lupvindol Biosciences (current)
Former President and Co-Founder of Veterinary Cannabis Society (current)
Los Angeles Zoo Medical Advisory Board (current)
The Doggy Dish Veterinary Advisory Board
Jaguar Health’s Canine Cancer: Take C.H.A.R.G.E. Scientific Advisory Board (1/2022-12/23)
American College Veterinary Internal Medicine (ACVIM) General Exam committee (2016-2019)
Canopy Animal Health Growth Organization; Cannabis Thought Leader Summit – Smith Falls, Ontario (2019)
Richter G., Hazzah T. Integrative Veterinary Medicine, An Issue of Veterinary Clinics of North America: Small Animal Practice: Volume 55-6. Elsevier Churchill Livingstone, 2025.
Bajorek SR, Hazzah TN, Chretin JD, Mills TN, McKee TS, Frank JR, Benvin-Guzzo JL, Clifton KA, Bergman PJ. Evaluation of the Amount of Compounded Chemotherapy Drugs: A Comparison Between Nine Compounding Pharmacies. Vet Comp Oncol. 2024.
Hazzah. The Use of Medical Cannabis as Palliative Care in a Feline with Advanced Cancer. J Am Holist Vet Med Assoc. 2024. 74; 26-34.
Reviewer for Cannabidiol (CBD) monograph for Plumb’s Veterinary Drugs Handbook (2024 and 2022)
Reviewer for the American Journal of Veterinary Research (cannabis articles(s)) (2023)
"2-Minute Takeaway" article for Clinicians Brief (2023). “Corsato Alvarenga I, MacQuiddy B, Duerr F,
Elam LH, McGrath S. Assessment of cannabidiol use in pets according to a national survey in the USA.” J Small Anim Pract. 2023.
Reviewer for the American Journal of Veterinary Research (2023): "Pharmacokinetics of cannabinoids and metabolites in orange-winged Amazon parrots (Amazona amazonica following oral administration of single and multiple doses of a hemp extract".
Richter G., Hazzah T. Chapter 38: Cannabis sativa: An Overview. In: Ramesh C. Gupta, Rajiv Lall, and Ajay Srivastava, Editors of Nutraceuticals: Efficacy, Safety and Toxicity, 2nd ed. London, United Kingdom. Academic Press/Elsevier.
Oakley C, Bruyette D, Chretin J, Hazzah T, Bergman P: Thromboelastography to Evaluate Coagulation Changes in Dogs on Yunnan Baiyao With Hemangiosarcoma: A Pilot Study. J American Holistic Veterinary Medical Association. 64: 39-49, 2021.
de Lorimier L., Hazzah T., Amazonas E., Cital S. Chapter 10 In: Cital, Hughston, Kramer and Gaynor, Editors of Cannabis Therapy in Veterinary Medicine - A Complete Guide, 1st ed. 2021. Cham, Switzerland. Springer.
Hazzah T., Andre C., Richter G., McGrath S. Cannabis in Veterinary Medicine: A Critical Review. JAHVMA. 2020, Dec (61): 17-41.
Hazzah T. Chapter 147 and 148: Tumors of the Male Reproductive System and Gynecologic Cancers. In: David Bruyette, Editor of Clinical Small Animal Internal Medicine, 1st ed. 2020. Hoboken, NJ, USA. London, Wiley/Blackwell.
Selected by AVMA to edit their August 2020 AVMA new comprehensive resource titled Cannabis in Veterinary Medicine
Reviewer for the Journal of American Holistic Veterinary Medical Association (cannabis article(s)) (2019)
Hazzah T, Kass P, Brodsky E, Elpiner A, Silver M, Buote N, Post G. Evaluation of Mitoxantrone with Piroxicam as
First Line Therapy for Carcinomas of the Prostate in Dogs. Vol. 11, Intern J Appl Res Vet Med. No. 1, 2013
Elpiner AK, Brodsky EM, Hazzah TN, Post GS. Single-agent gemcitabine chemotherapy in dogs with
hepatocellular carcinomas. Vet Comp Oncol. 2011 Dec;9(4):260-8
Mid-Atlantic Cannabinoid Research Collaborative (1 hour) (2025)
Research Collaborative. Cannabinoid Study Review and Polypharmacy (1 hour) (2025)
Feed Real Summit: Cannabinoids in Veterinary Medicine.
(1 hour) (2025)
Veterinary Cancer Group Journal Club Presentation on Cannabis for Cancer Patients (1 hour) (2025)
ACVIM (Virtual): Perspectives from a Veterinary Oncologist on the Use of Cannabis in the Cancer Patient (2024)
Animal Cancer and Referral Center (2 hours in person) Uses and Indications of Cannabis in Veterinary Medicine
and Understanding the Physiology and Mechanisms of Cannabis and Its Derivatives (2024)
VIN/Veterinary Cannabis Society: Cannabis in Veterinary Medicine: The Basics Course (7 hour)-Developed course outline and organized speakers. Presented (80 min) lecture on Clinical Applications of Cannabis in Small Animal Medicine (2023-
2025).
American Holistic Veterinary Medical Association Conference: 3 1-hour Cannabis lectures: “A Tour of the Cannabis Plant:
What’s Inside?”, “Clinical Application of Cannabis in Small Animals”, The Use of Cannabis in Oncology” (2023)
Pacific Veterinary Conference: 7 1-hour lectures “The Endocannabinoid System (ECS): The Body’s Local Thermostat”, “A Tour of the Cannabis Plant: What’s Inside?”, “Perspectives from a Veterinary Oncologist on the Use of Cannabis in the Cancer
Patient”, “Cannabis in Veterinary Practice: Contraindications, Drug Drug interactions, and More”, “Cytology in Clinical
Oncology”, “Transitional Cell Carcinoma”, “Canine Primary Bone Tumors” (2023)
Healthy Dog Expo: Veterinary Cannabis: An Emerging Medicine (2023)
Tuskegee University School of Veterinary Medicine. 2 hours of lecture for 2nd year pharmacology students on: “The Plant: Cannabis sativa L.”, “The Clinical Application of Cannabis in Practice” (2023)
Integrative Medicine Seminar: Is Cannabis a New Tool for Veterinary Oncology? (2023)
Southern California Veterinary Medical Association: Clinical Application of Cannabis in Small Animal Medicine (2022)
Veterinary Cannabis Society Annual Conference: Hot Topic Modalities in Integrative Oncology (2022)
VIN Clinical Application of Cannabis in Small Animal Medicine (2022)
Tuskegee University School of Veterinary Medicine Symposium: “A Tour of the Cannabis Plant: What’s Inside”,
“Perspectives from a Veterinary Oncologist on the Use of Cannabis in the Cancer Patient”(2022)
Society of Cannabis Clinicians International Veterinary Cannabis Alliance Webinar: “Dosing & Administration”,
Panelist (2021)
International Congress of Medicinal Cannabis in Veterinary Medicine (VETCANN): Master
Room, Panelist (2021)
AMVC LATAM oncology lecture through Asociación Med. Vet. Cannabinoide Latinoamericana:
“Is Medical Cannabis a New Tool for Veterinary Oncology?” (2021)
Veterinary Cancer Society’s Oncology Connections: “Is Cannabis a New Tool for Veterinary Oncology?” (2021)
Southwest Veterinary Symposium: 5 1-hour Cannabis lectures: “A Tour of the Cannabis Plant- What’s Inside”,
“The Endocannabinoid System (ECS)- The Bodies Local Thermostat”, “Implementing Cannabis- A Clinical Algorithm”, Perspectives from a Veterinary Oncologist on the Use of Cannabis in the Cancer Patient (2021)
Montgomery County, Texas VMA 2-part lecture: An Overview of Cannabis in Veterinary Medicine and “Clinical
Application of Cannabis: Therapeutic Implementation Dosing Rational and Toxicity Information (2021)
VIN Topics in Feline Medicine: Medical Cannabis (2021)
American Veterinary Medical Association Cannabis Symposium (part of the Annual Convention): “Perspectives
from a Veterinary Oncologist on potential clinical needs for cannabis-derived products” (2020)
American Holistic Veterinary Medical Association Conference: 5 1-hour Cannabis lectures: “What Exactly is the
ECS?”, “The Cannabis Plant”, “Clinical Applications of Cannabis”, “Cannabis and Cancer”, “Integrating Cannabis
into the Cancer Treatment Protocol” (2020)
International Veterinary Academy of Pain Management’s Virtual Symposium: "An Overview of the
ECS, The Cannabis Plant, And the Role of Cannabinoids in Pain Management" (2020)
ASEC Virtual Symposium: “An Overview of Cannabinoid Therapy in Veterinary Medicine” for both the Veterinary
and the Technician tracks (2020)
Oregon State University “Incorporating Cannabis into Practice: A Clinical Algorithm” (2020)
California Veterinary Medical Association 2 CE courses: “Introduction to Cannabinoid Medicine and What
Veterinarians Need to Know” (2020)
Veterinary Information Network 3-week (6-hour) CE Course: “Cannabis in Veterinary Medicine” (2019 and 2020)
Veterinary Cannabis Education and Consulting Webinar Symposium. Host and Speaker:
“Getting Started with Cannabis: A Clinical Algorithm” and “Cannabis in Oncology: Definitive and Palliative Intent”
(2019)
Veterinary Cancer Society Annual Conference Technician Workshop: “Integration of Cannabis into Cancer
Therapy: A New Tool for Better Outcomes” (2019)
Seaside Veterinary Forum “Cannabis in Veterinary Medicine: Integrating Cannabis into Veterinary Practice” (2019)
American Holistic Veterinary Medical Association Conference: Member of the round table discussion on
cannabinoid medicine (2019)
The Four Corners Veterinary Symposium “Introduction to Cannabinoid Medicine: What Veterinarians need to
know” (2019)
The VCA medical director's specialty meeting, “Cannabis in Veterinary Medicine: The ECS, the Cannabis Plant,
and Updated Research” (2019)
Tuskegee University School of Veterinary Medicine. Oncology lecture series as part of the 2nd and 3rd-year
veterinary curriculum (2016-2018)
International Cannabinoid Research Society
Veterinary Cannabis Society
Society of Cannabis Clinicians
Canadian Association of Veterinary Cannabinoid Medicine
American College of Veterinary Internal Medicine
American Holistic Veterinary Medical Association
Veterinary Cannabis Society 501(c)(3) non-profit organization-Past president and Co-founder
© 2026 - GreenNile.org All right reserved