522.2690—Zinc gluconate.
        
        (a) Specifications.
         Each milliliter of solution contains 13.1 milligrams zinc as zinc gluconate neutralized to pH 7.0 with L-arginine.
    
    
    
        
        (c) Conditions of use in dogs—
        
        (1) Amount.
         The volume injected into each testicle is based on testicular width as determined by measuring each testicle at its widest point using a metric scale (millimeter) caliper.
    
    
        
        (2) Indications for use.
         Intratesticular injection for chemical sterilization of 3- to 10-month-old male dogs.
    
    
        
        (3) Limitations.
         Federal law restricts this drug to use by or on the order of a licensed veterinarian.