Potential Benefits of Fit 'N Fertile Canine Formula products include; Health and Well-Being, Supports Dogs Natural Immunity, Increased Vitality, Improved Coat Condition, Improved Stamina and Recovery Times for Working and Competition Dogs. Product variations of Fit 'n Fertile Canine Formula are also available for older dogs where arthritis may be present in the leg joints ( e.g. Lifetime Fitness Canine Formula)