Section 520.852 - Estriol(a)Specifications. Each tablet contains 1 milligram (mg) estriol.(b)Sponsor. See No. 000061 in § 510.600(c) of this chapter.(c)Conditions of use in dogs - (1)Amount. Administer at an initial dose of 2 mg per dog per day. The dosage may be titrated to as low as 0.5 mg per dog every second day, depending on response.(2)Indications for use. For the control of estrogen-responsive urinary incontinence in ovariohysterectomized female dogs.(3)Limitations. Federal law restricts this drug to use by or on the order of a licensed veterinarian. 76 FR 78150 , Dec. 16, 2011