Tri-Hist Granules

*Product has been experiencing some back orders and delays. Please inquire to get on a waiting list if product is out of stock. Product quantity is limited to 1 for all orders, and pricing is subject to the market. Duplicate orders are not permitted. Please refer to our Policy Page for information. Tri-Hist Granules is an antihistamine and decongestant powder for horses. Each ounce of powder contains: Pyrilamine Maleate USP – 600 mg Pseudoephedrine HCl – 600 mg Tri-Hist Granules has a palatable cornmeal base. Why use an antihistamine combined with a decongestant? Respiratory congestion can result from a number of causes, including cold and flu viruses, allergens, and non-infectious irritants. Regardless of the specific cause, an antihistamine can provide immediate relief and reduce the downtime due to illness. Histamines are the body’s natural response to allergens and are responsible for the symptoms seen, including itchiness and runny nose. Antihistamines alone do not relieve thes