Psilocybin mushrooms — like Psilocybe cubensis — naturally contain chitin, a fibrous substance also found in the shells of shrimp, crab, and other shellfish.
Most shellfish allergies are caused by a protein called tropomyosin, not chitin. However, if your system is reactive to shellfish or fungi, you could be more likely to respond to compounds in psilocybin mushrooms as well.
What to Watch For
Possible signs of sensitivity may include:
Mild skin irritation or rash
Digestive discomfort (bloating, nausea, cramping)
Itchy throat or sinus congestion
These reactions are usually mild, but they’re worth paying attention to.
Our Recommendations
If you’ve had allergic reactions to shellfish or mushrooms — or you’re unsure — we suggest the following:
Speak with your doctor or allergist to rule out any major risks.
Reach out to our team with questions — we’re here to help.
Book a consultation call if you'd like personalized support before starting.
If you choose to microdose, start low (under 50mg) and go slowly.
Avoid mixing with new supplements or known allergens at first.
Honor What You Feel
Microdosing should feel safe, supportive, and aligned. If something feels off, take a step back. This is a practice of tuning in, not pushing through.
We're Here to Support You
If you need guidance:
👉 Book a consultation call
👉 Visit our Help Center