collage of old John Ewing Company photos

Welcome to Formula 707 Professional, formerly known as Horse Logic Professional. We've been committed to providing equine competitors with top-level nutrition for over 75 years, and are looking forward to 75 more. Rest assured, your favorite products and the quality you've come to know and love remain unchanged.

In the next few months, all products, account info, autoships, and order history will migrate to You will be automatically redirected as soon as that change happens. If you have any questions, please don't hesitate to reach out to us at or (970) 294-3374.


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John Ewing Company has been a trusted name in the equine supplement business since 1946. Learn more about us and Formula 707 Professional.

Our trusted Formula 707 Professional products are scientifically formulated and proven to help horses. Purchase these affordable, palatable and easy-to-use products today!

Meet our team of independent sales reps, who are dedicated to working for you and your horse's needs.

Made in Colorado
Customer Satisfaction Guaranteed
Free Autoship Direct to Barn
Scientifically Formulated Blends

Professional's Program

We are proud to support the professionals that make the equine industry great. Our Professional's Program allows for individuals to provide the highest quality supplements to their clients' horses, while supporting their business.

Independent Sales Rep Program

Pursue a career in the equine industry on your own terms as a Formula 707 Professional Independent Sales Rep. Utilize your own connections to grow your business, with the support you need to succeed.