Hist-Arrest w/ DAO | 60 Veg Caps! | Contains 10,000 HDU of Diamine Oxidase (DAO) with Vitamin C PER CAPSULE | Supports Healthy Degradation of Food-Derived Histamine*

$ 51.95

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NATION WIDE BACK-ORDER. HIST ARREST WILL NOT BE AVAILABLE FOR 3 MONTHS ... POSSIBLY INDEFINITELY.

Dear Valued Customer

We have recently been notified by the manufacturer of our HormoneSynergy Hist-Arrest w/ DAO that the licenser (Sciotec Diagnostic Technologies GmbH, Vienna, Austria) has sold and the new owners (Stada Pharmaceuticals) have specifically requested that all Amazon and retail sales of Diamine Oxidase (DAO) be ceased.

In addition, Stada has not resumed shipments OR SALES for reasons unknown (although one can speculate).

Unfortunately, as there is only one supplier - all Diamine Oxidase sales in the United States will be on hold at minimum for 3 months and possibly INDEFINITELY. This will affect ALL suppliers in this country.

It’s with much regret that we must cancel all current and back-ordered Hist-Arrest.

For questions or concerns please feel free to contact us:


Daniel Soule
Owner / Director
HormoneSynergy Clinic
Portland, OR 97239
503-230-7990


Hist-Arrest is a patented enzyme formula containing diamine oxidase (DAO) - the main enzyme responsible for the degradation of ingested histamine in the gut. This enzyme has been clinically tested and found to break down food-derived histamine in the digestive tract. DAO is not absorbed and does not have systemic activity.* Hist-Arrest w/ DAO is manufactured under license of Sciotec Diagnostic Technologies GmbH, Vienna, Austria. NOTE: Hist-Arrest does not manage or address antibody-related or IgE-related food allergies.*

*These statements have not been evaluated by the United States Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent disease. The information provided about this or any HormoneSynergy nutritional supplement or any information contained on or in any product label or packaging is for informational purposes only and is not intended as a substitute for advice from your physician or health care professional. You should consult with a healthcare professional before starting any diet, exercise or supplementation program, before taking any medication, or if you have or suspect you might have a health problem. As with any nutritional supplement do not take if you are pregnant or nursing or while taking medications without consulting your healthcare practitioner.