Ok here is the info sheet for Sulmet
SULFAMETHAZINE SODIUM 12.5%
Drinking Water Solution
Antibacterial
For Animal Use Only
INDICATIONS
For control and treatment of the following diseases when caused by one or more of the following pathogenic organisms susceptible to sulfamethazine.
FOR THE TREATMENT OF:
Cattle: Bacterial Pneumonia and Bovine Respiratory Disease Complex (Shipping Fever Complex) (Pasteurella spp.)
Colibacillosis (Bacterial Scours) (Escherichia coli)
Necrotic Pododermatitis (Foot Rot) (Fusobacterium necrophorum)
Calf Diphtheria (Fusobacterium necrophorum)
Acute Metritis (Streptococcus spp.)
Beef Cattle: Acute Mastitis (Streptococcus spp.)
Swine: Porcine Colibacillosis (Bacterial Scours) (Escherichia coli)
Bacterial Pneumonia (Pasteurella spp.)
FOR THE CONTROL OF:
Chickens: Infectious Coryza (Haemophilus gallinarum)
Coccidiosis (Eimeria tenella, Eimeria necatrix)
Acute Fowl Cholera (Pasteurella multocida)
Pullorum Disease (Salmonella pullorum)
Turkeys: Coccidiosis (Eimeria meleagrimitis, Eimeria adenoeides)
Here is the table from The Merck Manual on withdrawl times
Feed or Water Active Ingredient: Treatment, Duration Withdrawal Time (days)
Amprolium Water 0.012-0.024%, 3-5 days; 0.006%, 1-2 wk 0
Chlortetracycline Feed 0.022% + 0.8% calcium; not more than 3 wk 0
Oxytetracycline Feed 0.022% + 0.18-0.55% calcium; not more than 5 days 3
Sodium sulfachloropy razine monohydrate Water 0.03%, 3 days 4
Sulfadimethoxine Water 0.05%, 6 days 5
Sulfamethazine (sulfadimidine) Water 0.1%, 2 days; 0.05%, 4 days 10
Toltrazuril Water 25 ppm, 2 days NA
So acording to the active ingredient it looks like a 10 day withdrawl time.
SULFAMETHAZINE SODIUM 12.5%
Drinking Water Solution
Antibacterial
For Animal Use Only
INDICATIONS
For control and treatment of the following diseases when caused by one or more of the following pathogenic organisms susceptible to sulfamethazine.
FOR THE TREATMENT OF:
Cattle: Bacterial Pneumonia and Bovine Respiratory Disease Complex (Shipping Fever Complex) (Pasteurella spp.)
Colibacillosis (Bacterial Scours) (Escherichia coli)
Necrotic Pododermatitis (Foot Rot) (Fusobacterium necrophorum)
Calf Diphtheria (Fusobacterium necrophorum)
Acute Metritis (Streptococcus spp.)
Beef Cattle: Acute Mastitis (Streptococcus spp.)
Swine: Porcine Colibacillosis (Bacterial Scours) (Escherichia coli)
Bacterial Pneumonia (Pasteurella spp.)
FOR THE CONTROL OF:
Chickens: Infectious Coryza (Haemophilus gallinarum)
Coccidiosis (Eimeria tenella, Eimeria necatrix)
Acute Fowl Cholera (Pasteurella multocida)
Pullorum Disease (Salmonella pullorum)
Turkeys: Coccidiosis (Eimeria meleagrimitis, Eimeria adenoeides)
Here is the table from The Merck Manual on withdrawl times
Feed or Water Active Ingredient: Treatment, Duration Withdrawal Time (days)
Amprolium Water 0.012-0.024%, 3-5 days; 0.006%, 1-2 wk 0
Chlortetracycline Feed 0.022% + 0.8% calcium; not more than 3 wk 0
Oxytetracycline Feed 0.022% + 0.18-0.55% calcium; not more than 5 days 3
Sodium sulfachloropy razine monohydrate Water 0.03%, 3 days 4
Sulfadimethoxine Water 0.05%, 6 days 5
Sulfamethazine (sulfadimidine) Water 0.1%, 2 days; 0.05%, 4 days 10
Toltrazuril Water 25 ppm, 2 days NA
So acording to the active ingredient it looks like a 10 day withdrawl time.