This blog post covers the best mast cell stabilizers.
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Who is Betsy Leighton?
I’m a writer, blogger, and healer dedicated to helping individuals reconnect with their innate peace and wholeness by healing nervous system dysregulation. My personal experience with chronic illness called Mast Cell Activation Syndrome (MCAS) shapes my work, and my content offers tools to empower those with chronic illness to improve their well-being and take charge of their health.
I created the Sacred Self-Healing Method and am a trained and certified Safe and Sound Protocol provider, an author, blogger, and A Course in Miracles Teacher. I hold a Master of Divinity in Spiritual Counseling and am a trained spiritual mentor, with certificates in sound healing, aromatherapy, nutrition, and Sacred Deathcare. I offer a self-study certificate program in the Sacred Self-Healing Method, provide spiritual counseling and coaching, courses, and supported subscriptions for the Safe and Sound Protocol.
What is MCAS?
Mast Cell Activation Syndrome (MCAS) is a chronic condition that affects all organ systems. It can cause severe, disabling symptoms every day, including potentially fatal anaphylaxis.
The common triggers for MCAS are infections, toxic exposures including mold exposure and EMFs, trauma, concussions, and stress.
MCAS often occurs with other chronic conditions like Ehlers-Danlos Syndrome (EDS) and Postural Orthostatic Tachycardia Syndrome (POTS). Managing MCAS is challenging because many healthcare providers are unaware of it, and diagnostic tests can be unreliable. Treatments include antihistamines and mast cell stabilizers in the form of medications and supplements, along with avoiding triggers. Check out this post on managing MCAS.
Overview of mast cell stabilizers
Mast cell stabilizers are a foundational treatment for Mast Cell Activation Syndrome because they work upstream of symptoms, helping to prevent mast cells from releasing inflammatory mediators such as histamine, prostaglandins, leukotrienes, and cytokines. Rather than simply blocking the effects of these chemicals after release, stabilizers calm mast cells themselves, reducing the frequency, intensity, and unpredictability of reactions. Over time, this can lead to broader symptom improvement across multiple body systems and greater tolerance to foods, medications, and environmental triggers.
Cromolyn sodium
Cromolyn sodium (CS) is one of the most widely used mast cell stabilizers in MCAS, particularly for gastrointestinal symptoms. Taken orally, it acts locally in the gut to stabilize mast cells lining the intestinal tract, reducing abdominal pain, diarrhea, nausea, reflux, and food-triggered reactions. Because it is minimally absorbed into the bloodstream, cromolyn is generally well tolerated, though MCAS patients often need to start with very small doses and increase slowly. Consistent use over weeks to months is usually required for full benefit. I’ve used Cromolyn sodium on and off, and find it helpful at times. My biggest complaint about CS is the difficulty of timing the taking of it away from meals, other medications, and supplements.
Ketotifen
Ketotifen is both a mast cell stabilizer and an H1 antihistamine, making it especially useful for patients with systemic or multisystem symptoms. Unlike cromolyn, ketotifen is systemically active, helping with skin, respiratory, neurological, and cardiovascular symptoms, as well as gastrointestinal issues. Sedation and increased appetite can occur, particularly when starting treatment, so gradual dose titration is important. Many patients find ketotifen helpful for reducing baseline reactivity and the severity of flares. I haven’t tried Ketotifin.
Quercetin and other flavonoids
Quercetin is a naturally occurring flavonoid with mast cell–stabilizing and anti-inflammatory properties. It can inhibit mast cell degranulation and reduce histamine and other mediator release. Some MCAS patients use quercetin as an adjunct to prescription medications or as an option when pharmaceutical stabilizers are not tolerated. Because supplements vary in quality and bioavailability, benefits can be inconsistent, and sensitive individuals may still need to introduce them cautiously.
Nettle (Urtica dioica) and quercetin act synergistically by targeting mast cell activation and histamine signaling through complementary mechanisms, making them a useful pairing for allergic conditions and mast cell–related disorders. Quercetin helps stabilize mast cells, inhibits histamine and other inflammatory mediator release, and reduces downstream inflammation through its antioxidant and anti-cytokine effects. Nettle, meanwhile, can block histamine receptors, inhibit enzymes involved in histamine production, and reduce inflammatory signaling. Together, quercetin lowers the amount of histamine released, and nettle reduces the body’s response to histamine that is already present, resulting in broader and more balanced symptom control than either compound alone.
I take this brand of nettle-quercetin, which works the best for me and contains no fillers or other ingredients that bother me.
Luteolin and related compounds
Luteolin is another flavonoid with mast cell–stabilizing effects, particularly noted for its actions on neuroinflammation and brain-related symptoms such as brain fog, headaches, and sensory sensitivity. It may help dampen mast cell activity in the nervous system and is sometimes used in combination with quercetin for a broader effect. As with all supplements in MCAS, careful attention to formulation and dosing is important.
General considerations for mast cell stabilizers
Mast cell stabilizers often work best when used consistently and as part of a broader MCAS treatment plan that includes trigger avoidance and mediator blockers. Improvements are typically gradual rather than immediate, reflecting their role in gradually calming mast cell behavior. Because MCAS patients can be unusually sensitive to medications and excipients, individualized dosing and close clinical guidance are essential.
The bucket theory
The bucket theory simplifies understanding symptom reactions with MCAS. Imagine your body as an empty bucket you don’t want to overflow. Reactions to various stimuli fill the histamine bucket at different rates, forming the total histamine level (how full your bucket is). More histamine means more symptoms. By managing triggers, reducing exposures, and taking medications and supplements, you can control your bucket’s level.
Know your typical symptom progression
Understanding your symptom progression during a flare is key to developing your rescue plan. This post discusses how to recognize symptom progression so you can be prepared to address them.
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Want a tool to easily track your symptoms?
Check out these circadian health tools!
I’m an affiliate with Bon Charge, a company that makes tools for circadian health, and you can receive 15% off your order with my coupon code BETSYL.
Bon Charge offers tools such as yellow– and red-tone blue-blocking glasses, red light therapy devices, PEMF mats, infrared saunas, and EMF-blocking products.
Sign up for the SSP!
I’ve found the Safe and Sound Protocol (SSP) to be the most helpful bottom-up healing strategy if your nervous system has been overloaded with toxic exposures, including mold or non-native EMFs, chronic infections, concussions, stress, or trauma. The SSP is a passive listening therapy that helps heal nervous system dysregulation. Many people with MCAS and other chronic conditions have nervous system dysregulation stemming from infections, toxic exposures, concussions, and trauma. The SSP is an easy-to-use app that lets you listen to specially filtered music for 30 minutes each day as part of a 5-hour cycle. Studies show the SSP has a profound effect on mental health and chronic conditions. Here’s a short podcast describing the Safe and Sound Protocol.
You can sign up for the SSP here!
Heal your mind!
While the SSP is a bottom-up, somatic therapy for healing the nervous system, the Sacred Self-Healing Method I offer is a top-down nervous system-healing modality that focuses on cognition, attention, perception, and emotion, using the mind’s higher functions. The SSP and the Sacred Self-Healing Method complement each other and together produce lasting results. Here’s a short podcast on my self-healing practice.
I provide one-on-one in-person and remote chronic illness and caregiver coaching, as well as Sacred Self-Healing Sessions based on the Sacred Self-Healing Method, a proven, novel co-creative healing modality detailed in my Books.
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Here’s a short podcast highlighting my five books.
My latest book, Living In The Light: Healing with Forgiveness, Sound, and Light, is all about the tools that have been most helpful for me to heal: forgiveness, sound, through nervous system retraining using the Safe and Sound Protocol, and light, through entraining my circadian rhythm with the energy of the sun. Living In The Light is available here!
Rocks and Roots chronicles my solo backpacking journey on the Superior Hiking Trail and my efforts to overcome nervous system dysregulation, gut dysbiosis, and Mast Cell Activation Syndrome symptoms to complete the 328-mile hike successfully.
The Sacred Self-Healing Method ebook is available here and in most ebook retailers!
The Sacred Self-Healing Workbook is available for purchase here!
Betsy’s first book, Sacred Self-Healing: Finding Peace Through Forgiveness, is available here
Companion Recordings
The companion audio recordings of chants, guided meditations, and sound healing demonstrations that accompany the Sacred Self-Healing Method are available for free on my YouTube channel here
What do you think?
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Disclaimer
The preceding material does not constitute medical advice. This information is for information purposes only and is not intended to be a substitute for professional medical advice, diagnosis, cure, or treatment.
