Minimum Withdrawal Times

As with all lists of this nature, it is accurate as best we can complete as of 8/1/02. This is only a partial list of approved medications that have preslaughter withdrawal times in swine.There are other approved medications that have a zero day withdrawal. Withdrawal times may change. Consult the label for directions. For complete information on all animal health products approved for use in swine (including those with zero day withdrawal to market) go to the Food and Drug Administration (FDA)-Center for Veterinary Medicine web site at www.fda.gov/cvm

Drinking Water Application

Drug Trade Name (example) Preslaughter withdrawal (days)
Apramycin sulfate Apralan Soluble Powder 28
Chlortetracycline Aureomycin Soluble Powder 1
Chlortetracycline bisulfate and Sulfamethazine Aureomycin Sulmet Soluble Powder 15
Gentamicin sulfate Garacin Soluble Powder 10
Levamisole hydrochloride Levasole Soluble, Tramisol Soluble 3
Neomycin sulfate Neomix Ag 325 Soluble Powder, Neomycin 325 Soluble Powder 3
Oxytetracycline Terramycin Soluble, Terramycin 343 5
Sulfamethazine Sulmet Drinking Water Solution 15
Tetracycline hydrochloride Tetra-Bac 324 Soluble Powder 4
Polyotic 7
Tiamulin Denagard Soluble Antibiotic, 3.5 mg/lb 3
10.5 mg/lb 7
Tylosin tartrate Tylan Soluble 2


Oral Application

Drug Trade Name (example) Preslaughter withdrawal (days)
Gentamicin sulfate (solution) Garacin Pig Pump 14
Neomycin sulfate Biosol Liquid 3
Sulfachlorpyridazine Vetisulid Powder 4
Spectinomycin dihydrochloride Spectam Scour Halt 21


Application Drug Trade Name (example) Preslaughter withdrawal (days)
Apramycin Apralan 28
Carbadox Mecadox Premix 10 42
Hygromycin B Purina Hygromix Swine 15
Ivermectin Ivomec Premix for Swine 5
Levamisole resinate Tramisol Hog Wormer 3
Neomycin sulfate Neomix Ag 325 Medicated Premix 3
Oxytetracycline Terramycin, 10-50 g/ton 0
10 mg/lb body wt 5
Oxytetracycline plus Neomycin sulfate Neo-Terramycin 50/50 5
Pyrantel tartrate Banminth Premix   – 48 1
Roxarsone 3-Nitro 20 5
Sulfamethazine Aureomix 500; Aureo SP-250, Tylan 40 Sulfa-G Premix 15
Sulfathiazole CSP-250,CSP-500 7
Tiamulin – Denagard Medicated Premix 10 g/ton 0
35 g/ton 2
200 g/ton 7
Tilmicosin Pulmotil 18 7



Application Drug Trade Name (example) Preslaughter withdrawal (days)
Erythromycin Gallimycin 100 7
Gentamicin sulfate Garacin Piglet Injection 40
Isoflupredone acetate Predef 2x 7
Ivermectin Ivomec 0.27% or 1.0% 18
Lincomycin hydrochloride Lincomix Injectable 2
Oxytetracycline LA-200;Bio-Mycin 200 28
Oxytetracycline hydrochloride Oxy-Tet Injection 26
Procaine penicillin Penicillin G Procaine 7
Sodium selenite BO-SE 14
Tylosin Tylan 50 or 200 Injectable 14
Vitamin Injectables Vitamin ADB12 60


Reference to products in this publication is not intended to be an endorsement to the exclusion of others which may be similar. Persons using such products assume responsibility for their use in accordance with current directions of the manufacturer. The information represented herein is believed to be accurate but is in no way guaranteed. The authors, reviewers, and publishers assume no liability in connection with any use for the products discussed and make no warranty, expressed or implied, in that respect, nor can it be assumed that all safety measures are indicated herein or that additional measures may be required. The user therefore, must assume full responsibility, both as to persons and as to property, for the use of these materials including any which might be covered by patent. This material may be available in alternative formats.


Information developed for the Pork Information Gateway, a project of the U.S. Pork Center of Excellence supported fully by USDA/Agricultural Research Service, USDA/Cooperative State Research, Education, and Extension Service, Pork Checkoff, NPPC, state pork associations from Iowa, Kentucky, Missouri, Mississippi, Tennessee, Pennsylvania, and Utah, and the Extension Services from several cooperating Land-Grant Institutions including Iowa State University, North Carolina State University, University of Minnesota, University of Illinois, University of Missouri, University of Nebraska, Purdue University, The Ohio State University, South Dakota State University, Kansas State University, Michigan State University, University of Wisconsin, Texas A & M University, Virginia Tech University, University of Tennessee, North Dakota State University, University of Georgia, University of Arkansas, and Colorado State University.