[Code of Federal Regulations] [Title 21, Volume 1] [Revised as of April 1, 2002] From the U.S. Government Printing Office via GPO Access [CITE: 21CFR520.48] [Page 97] TITLE 21--FOOD AND DRUGS CHAPTER I--FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) PART 520--ORAL DOSAGE FORM NEW ANIMAL DRUGS--Table of Contents Sec. 520.48 Altrenogest solution. (a) Specifications. Each milliliter (mL) of solution contains 2.2 milligrams (mg) altrenogest. (b) Sponsor. See No. 057926 in Sec. 510.600(c) of this chapter. (c) Special considerations. Federal law restricts this drug to use by or on the order of a licensed veterinarian. (d) Conditions of use--(1) Amount. 1.0 mL per 110 pounds body weight (0.044 mg per kilogram) daily for 15 consecutive days. (2) Indications for use. For suppression of estrus in mares. (3) Limitations. For oral use in horses only; avoid contact with the skin. Do not administer to horses intended for use as food. [66 FR 47960, Sept. 17, 2001]