Still reacting despite trying the low-histamine diet, supplements, medications, and trigger avoidance?
You may be missing the bigger picture.
Download Jen’s FREE whole-body guide to understand the flare cycle, explore the connection between your nervous system, gut, and immune system, and learn why simply chasing symptoms may not be enough to create lasting change.

A self-paced, trauma-informed course that helps you understand, stabilize, and heal mast cell and histamine disorders at the root for lasting relief.
The Whole Body Solution for Mast Cell & Histamine Disorders
$98

Refeed the nutrients you need for mental THRIVING- geared for mental health symptoms resistant to traditional treatment.
Heal Yourself From Chronic Anxiety, Depression, Mood Instability and More
$17
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Your mental and physical health sit on the foundation of nervous system regulation.
A Comprehensive Program of Mind and Body Practices
$377
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Hear from experts in root-cause healing, covering nutrition, the microbiome, and nervous system regulation for recovery from chronic illness.
12+ Hours
$79

Uncover the gut–brain connection driving MCAS, chronic fatigue, and sensitivities, and learn the tools to start reclaiming your body.
2 Hours
$29

Discover what’s really triggering your reactivity and how to shift your nervous system and immune response toward lasting relief.
2 Hours
$29

Topics cover nervous system retraining, brain and emotional wellness, microbiome health, epigenetics, and a Q&A panel.
12+ Hours
$79

A comprehensive deep dive into brain retraining, nervous system regulation, fascia realignment, and trauma release for whole-system healing and long-term resilience.
4.5 Hours
$49

Learn how targeted nutrition, metabolic balance, and microbiome support can drive meaningful improvements in mental health and emotional wellbeing.
2.5 Hours
$35

A complete guide to mast cell activation—what it is, why it happens, and how to resolve it using nutrition, detox support, lifestyle changes, and nervous system and mindset practices.
4 Hours
$49
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Discover how Jen’s recovery from severe MCAS and 7 real client case studies reveal individualized, root-cause strategies for healing MCAS, histamine intolerance, and complex chronic illness, even when recovery feels impossible.
1.5 Hours
$75

Explore how emotions, nervous system patterns, and stored stress may influence chronic illness, as well as how understanding these connections can support your healing journey.
1.5 Hours
$45

Step by Step Guide to Rebuilding Your Brain and Nervous System Written by Jen Donovan
Get the Book

Inside our free Facebook group, Heal Histamine With the Histamine Queen, you'll get practical resources and a compassionate community support to help you feel safer, stronger, and more in control of your healing journey.
Here’s what you’ll get when you join:
- The Low Histamine Gut Rebuilding Diet Food List
- A Guided Meditation to Soothe Your Nervous System
- Monday Educational or Motivational Prompts
- Monthly Live - Q&A — Every 4th Sunday at 11am PT
Whether you’re just getting started or deep in the process, this group is a grounding, judgment-free zone for curious, committed healing.
Join Facebook Group Now