Animal & Veterinary

NADA 138-187 Tylan 10, 40 and 100 Premix - original approval

Approval Date: August 6, 1985





Micro Chemical, Inc.
311 N. Arthur
P.O. Box 9262
Amarillo, Texas 79105

Generic Name:

Tylosin (as tylosin phosphate)

Trade Name:

Tylan 10, 40 and 100 Premix

Marketing Status:



  1. Swine: For increased rate of weight gain and improved feed efficiency. For prevention of swine dysentery (vibrionic). For maintaining weight gains and feed efficiency in the presence of atrophic rhinitis. For the treatment and control of swine dysentery (vibrionic) following initial medication of Tylan Plus Vitamins in drinking water.
  2. Beef Cattle: For reduction of the incidence of liver abscesses caused by Sphaerophorus necrophorus and Corynebacterium pyogenes.
  3. Chickens: For increased rate of weight gain and improved feed efficiency.
  4. Laying Chickens: Improving feed efficiency.
  5. Broiler and Replacement Chickens: To aid in the control of chronic respiratory disease caused by Mycoplasma gallisepticum.Feeds containing tylosin at 800 to 1000 grams per ton must be withdrawn 5 days before chickens are slaughtered.


Medicated Premix: The premix is to be added to the feed such that the complete feed contains: (1) Swine: 10 to 100 grams per ton of tylosin; (2) Beef Cattle: 8 to 10 grams per ton of tylosin; (3) Chickens 4 to 50 grams of tylosin per ton; (4) Broiler Chickens: 800 to 1000 grams per ton of tylosin; (5) Replacement Chickens: 1000 grams per ton of tylosin; (6) Laying Chickens: 20 to 50 grams per ton of tylosin.


The safety and efficacy date upon which this application was approved are found in NADA 12-491 for Elanco Products Company and are summarized in an FOI Summary in Docket Number 75N-0065.


Approval of this application is based on safety and effectiveness data contained in Elanco Products Company's approved NADA 12-491. Use of the data in NADA 12-491 to support this application has been authorized by Elanco. This approval does not change the approved use of the drug. Consequently, approval of this NADA poses no increased human risk from exposure to residues of the animal drug, nor does it change the conditions of the drug's safe use in the target animal species. Accordingly, under the Center for Veterinary Medicine's supplemental approval policy (42 FR 64367), this is equivalent to a Category II supplemental approval which does not require reevaluation of the safety and effectiveness data in the original approval.

VI. LABELING (Attached)

  1. Bag labels for Tylan 10, 40, and 100

Copies of these labels may be obtained by writing to the:

Food and Drug Administration
Freedom of Information Staff (HFI-35)
5600 Fishers Lane
Rockville, MD 20857

Or requests may be sent via fax to: (301) 443-1726. If there are problems sending a fax, call (301) 443-2414.

Page Last Updated: 08/27/2015
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