Expert Allergy Care for Every Stage of Life
Bytown Allergy and Associates brings board-certified allergy and immunology expertise to Ottawa — providing compassionate, evidence-based care from infants to seniors. Appointments by physician referral.
Comprehensive Allergy Services
From diagnosis to long-term management, we offer the full spectrum of allergy and immunology care under one roof.
We Understand What You're Going Through
Allergies and immune conditions affect millions of Canadians. Our specialists have the expertise to accurately diagnose and effectively treat a wide range of conditions — so you can breathe easier and live fully.
All ConditionsSeasonal Allergies
Hay fever, pollen, and environmental triggers causing sneezing, congestion, and itchy eyes.
Food Allergies
Reactions to peanuts, tree nuts, shellfish, dairy, eggs, wheat, and other common foods.
Asthma
Chronic airway inflammation causing wheezing, shortness of breath, and chest tightness.
Eczema (Atopic Dermatitis)
Chronic skin inflammation often linked to allergic sensitization and immune dysregulation.
Hives & Angioedema
Acute and chronic urticaria with or without swelling, often with an allergic or autoimmune cause.
Drug Allergies
Adverse reactions to antibiotics, NSAIDs, and other medications requiring careful evaluation.
Insect Sting Allergy
Potentially life-threatening reactions to bee, wasp, and hornet stings, managed with venom immunotherapy.
Immune Deficiency
Evaluation and management of primary and secondary immunodeficiency disorders in adults and children.
Ottawa's Most Trusted Allergy Clinic
We combine the precision of evidence-based medicine with the warmth of a patient-first practice. Every visit, every diagnosis, every treatment plan is built around you.
Board-Certified Specialists
Our allergists hold FRCPC certification in Allergy & Immunology from the Royal College of Physicians and Surgeons of Canada.
All Ages Welcome
From infants to seniors, we provide compassionate, age-appropriate allergy care for every member of your family.
Personalized Care Plans
Every patient receives a tailored treatment plan built around their unique allergy profile, lifestyle, and goals.
Ottawa-Based & Trusted
Located at 955 Green Valley Drive in Ottawa, we proudly serve the Ottawa-Gatineau region with deep roots in the Bytown community.
Meet Our Allergists
Our team of board-certified allergists and immunologists brings specialized expertise across all ages — from pediatric to adult care.
Dr. Timothy Olynych
Adult Allergy & Immunology
Specializing in adult allergy and immunology, Dr. Olynych provides comprehensive evaluation and management of allergic and immune conditions.
Dr. Adam Byrne
Pediatric Allergy & Immunology
With a focus on pediatric patients, Dr. Byrne offers compassionate, child-friendly allergy care from infancy through adolescence.
Dr. Derek Lanoue
Adult & Pediatric Allergy
Dr. Lanoue sees patients of all ages, bringing a broad perspective to allergy and immunology diagnosis and treatment.
We also work with a growing team of associate allergists — ask our clinic about current availability.
Meet the Full TeamReady to Find Relief?
Appointments at Bytown Allergy are by physician referral. Ask your family doctor, nurse practitioner, or specialist to refer you — or contact our clinic directly with questions.