Histamine & MCAS

Holistic support for histamine intolerance, allergies, and mast cell issues

If you’re dealing with random rashes, itchy skin, brain fog, gut discomfort, food reactions, or fatigue that doesn’t make sense, histamine may be part of the picture.

Histamine is a chemical your body makes on purpose. It helps run immunity, digestion, and inflammation. Problems show up when your body releases too much of it or breaks it down too slowly.

Cassidy Moss pouring a tincture over fresh herbs
SpecialtyHistamine and mast cells
Gut, food and nervous system
Virtual consults, worldwide

What this can include

These symptoms are often dismissed, misdiagnosed, or labeled as “just stress.” Stress can be a big part of it, and there’s usually more going on.

  • Histamine intolerance
  • Mast cell activation syndrome (MCAS)
  • Seasonal allergies
  • Food reactions
  • Hives, itching, swelling, or flushing
  • Histamine headaches and anxiety

What causes histamine issues?

Histamine issues usually build from a few things at once: gut dysbiosis or SIBO, chronic inflammation or repeat infections, mold or toxin exposure, a stressed nervous system, hormone shifts, and genetics that slow how your body breaks histamine down.

These conditions respond best to a well-thought-out plan that lowers your histamine load and rebuilds balance across your whole system.

My approach to histamine support

I work with herbs, food strategies, and foundational support to calm overactive mast cells, help your body clear histamine, and strengthen your gut, liver, and nervous system.

The goal is fewer day-to-day flares, so they stop ruling your life. Every plan is personalized. We start with what you tolerate and build from there.

What you’ll get from a consult

Consults are virtual and cover histamine intolerance, MCAS, seasonal allergies, and other histamine-related symptoms.

You’ll leave with a clear explanation of what’s going on in your body, gentle herbal support formulated specifically for you, gut and nervous system tools that settle reactivity, and food and lifestyle steps to take one at a time.

Let’s work together

A written wellness plan and a custom herbal formula, built around your health history and your goals.

New client consult, 60 minutes, $150. Virtual, with clients worldwide.