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(sulfadimethoxine / ormetoprim)

The only veterinary-approved potentiated sulfonamide with once-daily dosing for dogs


PRIMOR (sulfadimethoxine/ormetoprim) Tablets are indicated for dogs with skin and soft-tissue infections (wounds and abscesses) in dogs caused by strains of Staphylococcus aureus and Escherichia coli and urinary tract infections caused by Escherichia coli, Staphylococcus spp. and Proteus mirabilis susceptible to sulfadimethoxine/ormetoprim.

The extended half-life produces 24-hour therapeutic blood concentrations, which allows once-daily dosing which could improve the likelihood of compliance and better clinical outcomes.

Available as scored tablets for the following potencies: 120 mg, 240 mg, 600 mg, and 1200 mg.
PRIMOR 120: 100 mg sulfadimethoxine/ 20 mg ormetoprim.
PRIMOR 240: 200 mg sulfadimethoxine/ 40 mg ormetoprim.
PRIMOR 600: 500 mg sulfadimethoxine/ 100 mg ormetoprim.
PRIMOR 1200: 1000 mg sulfadimethoxine/200 mg ormetoprim.

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    • Potentiation of sulfadimethoxine (SDM) with ormetoprim (OMP) provides increased efficacy and broadens spectrum of activity to include some sulfonamide-resistant organisms.
    • The only veterinary-approved potentiated sulfonamide with once-daily dosing.
    • Extended half-life of SDM produces 24-hour therapeutic blood concentrations.
    • Scored tablets are available in 4 sizes for convenient dosing.
  • For complete dosing information, please refer to the full Prescribing Information.

PRIMOR should not be used in dogs with marked liver damage, blood dyscrasias, or in those with a history of sulfonamide hypersensitivity.

See full Prescribing Information.



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