Equine America Buteless High Strength 1lt. Equine America Buteless High Strength is a powerful, natural alternative to Bute that can help support mobility and ease joint pain and stiffness in horses, particularly the elderly and those showing signs of joint discomfort. Equine America Buteless High Strength can be used short or long term without concerns of side effects. Buteless High Strength is a powerful, highly palatable formula containing botanical extracts. Not Phenylbutazone (Bute). Does not contain Devil's Claw. Read more… 1lt - 2 month supply at maintenance level.