06/10/2026
Mast Cell Activation Syndrome, or MCAS, is a condition where mast cells release too many inflammatory chemicals, such as histamine, which can lead to a wide range of symptoms.
Because mast cells are part of the immune system and are found throughout the body, MCAS symptoms can affect multiple areas, including the skin, digestive system, lungs, heart, and nervous system.
Common symptoms may include flushing, itching, stomach discomfort, diarrhea, headaches, brain fog, rapid heart rate, lightheadedness, wheezing, or sensitivity to certain foods, medications, or environmental triggers.
One of the challenging parts of MCAS is that symptoms and triggers can vary from person to person. That is why care is often highly individualized and guided by a healthcare provider.
Our compounding pharmacy can work with prescribers to prepare customized options when standard dosage forms, ingredients, or strengths are not the best fit for a patient’s needs.