Thrush & Whiteline Disease


The mid-18th century phrase “No Hoof, No Horse” still holds true for horses today. 

Spring rain and melting snow result in slush and mud. This means you’ll need to pay extra attention to your horse’s hooves to prevent thrush and whiteline from gaining a foothold. Thankfully Equiderma Thrush and Whiteline Treatment can be used preventatively to ward off these infections.

The most common hoof issues our customers face are thrush and whiteline. Equiderma Thrush and Whiteline Treatment has quickly become one of our most popular products for a good reason. It is a silver bullet in the treatment of these common problems every horse owner faces.

Thrush is caused by bacterial (and occasionally fungal) infection, affecting the central and lateral sulcus (grooves) of the frog, resulting in a black, foul-smelling discharge. Often, the frog will become necrotic or begin to die off. A moist environment combined with a lack of removal of debris from the foot, poor hoof balance, and/or lack of exercise can cause thrush, but sometimes it rears its ugly head despite all your diligent efforts. Keep stall and turnout areas as clean and dry as possible and increase exercise in dry footing.

Whiteline Disease is visible on the underside of the hoof as a narrow, light-colored band between the hoof wall and sole. White line disease is classified by progressive hoof wall separation affecting the toe and quarters of the hoof, often caused by fungal spores. This condition is marked by areas of crumbly, powdery black or grey tissue at the white line. Removal of infected tissue, application of Equiderma Thrush and White Line Treatment, and protecting new horn growth are important treatment factors.

*PRO-TIP: Apply Equiderma Thrush and Whiteline Treatment generously over the entire hoof surface. In pervasive cases – saturate cotton balls and use the metal tip of your hoof pick to wedge the cotton ball into the clefts of the frog, central sulcus, and bulbs of the heel.

*For White Line Disease, the secret is killing the fungal spores and encouraging healthy hoof growth.  Equiderma Thrush and Whiteline Treatment will fight the causal organisms so your horse’s hooves can get back to health as soon as possible. It helps to wrap the hoof or apply inside a boot for a couple of days to ensure the treatment is getting inside the hoof wall. To improve hoof growth be sure your horse is getting a properly balanced diet that includes Biotin (20mg/d), Iodine (1mg/d), and Zinc (175-250 mg/d). These ingredients have been shown to improve hoof quality.


For more helpful tips and videos, check out our Youtube Channel!


Horse Care in Summer and in Winter

It’s possible for your horse to live outside in comfort all year...


My Own Personal Secrets for Treating Winter Rain Rot

Winter Rain Rot brings with it a unique and frustrating challenge for...


4 Easy Ways To Make Your Horse Miserable

Ordinarily in this blog I share ideas for understanding your horse better...