Many experience histamine intolerance when cellular processes overload and fail to effectively break down histamine from foods. This causes it to accumulate and trigger systemic discomfort.

HistoDAO relieves the GI tract using:

✓ Premium pharmaceutical-grade diamine oxidase (DAO)
✓ Patented formula clinically shown to metabolize ingested histamine
✓ Advanced vegetarian capsule with targeted intestinal release

By enhancing DAO activity, HistoDAO aids the natural enzymatic process to:

• Break down food-derived histamine in the digestive tract
• Prevent systemic absorption and associated challenges
• Establish resilience against high histamine foods
• Set the foundation for long-term tolerance

Take one tablet no more than 15 minutes before the consumption of histamine-rich foods, or take as directed by your healthcare practitioner.

The James Clinic currently ships only within the continental United States.

• In-stock orders received by 12:00 noon CST on business days ship the same day.
• Orders after 12:00 noon CST ship the next business day.
• Standard ground orders placed before 12:00 noon CST ship within 24-48 hours, pending availability and credit card authorization.
• Expedited orders placed before 5 p.m. EST on business days ship the same day (excluding holidays), subject to credit card authorization.

While we ensure satisfaction, we don't accept returns on any products or supplements. If you have any concerns, please email us at shop@jamesclinic.com, and we'll work to resolve them with you.