Sulfamethoxazole and Trimethoprim (Generic) Rx
Starting At $0.09 per tablet

Sulfamethoxazole and Trimethoprim (Generic) Rx


$0.09 per tablet
400mg/80mg Tablet
  • Usually ships within one business day with veterinary approval.

  • Requires veterinary authorization.

  • Your pet's veterinarian will provide directions for use.

What are Sulfamethoxazole and Trimethoprim (SMZ TMP) Tablets for Dogs and Cats?

  • Sulfamethoxazole and Trimethoprim are prescription antibiotics that treat a variety of bacterial infections.
  • Sulfamethoxazole and Trimethoprim Double Strength Tablets is the generic name of the brand Bactrim DS (Double Strength).

Why do cats and dogs use Sulfamethoxazole and Trimethoprim Double Strength?

  • Your veterinarian may prescribe Sulfamethoxazole and Trimethoprim Double Strength tablets to treat a variety of bacterial infections.
  • It may also be used to treat some types of parasitic infections.
  • Sulfamethoxazole and Trimethoprim will not treat viral infections.

What else should I know about Sulfamethoxazole and Trimethoprim Double Strength?

  • Allow your dog or cat access to plenty of fresh, clean water while giving Sulfamethoxazole and Trimethoprim so they do not become dehydrated.

What problems could my dog or cat have with Sulfamethoxazole and Trimethoprim Double Strength?

  • There are many side effects of Sulfamethoxazole and Trimethoprim.
  • Common, but not usually serious, side effects include vomiting, reduced appetite, loose stools, and increased salivation after giving a dose.
  • Dogs may develop the serious side effect of dry eye syndrome, or keratoconjunctivitis sicca (KCS). Signs of dry eye include redness, discharge from the eye, or increased blinking. Your veterinarian may test your dog's tear production. Contact your veterinarian if you see any of these signs.

How do you use Sulfamethoxazole and Trimethoprim Double Strength?

  • Sulfamethoxazole and Trimethoprim may be given with or without food. Follow your veterinarian's directions.

What is in Sulfamethoxazole and Trimethoprim Double Strength?

  • Sulfamethoxazole and Trimethoprim are sulfonamide antibiotics.
  • These drugs disrupt the production of folic acid that some kinds of bacteria use for producing proteins.

Will I get what I see in the picture?

  • Sulfamethoxazole and Trimethoprim Double Strength is sold as an FDA approved generic drug. Brand may vary from order to order and variation to variation. We are unable to guarantee which brand will be available at the time of order shipment.

Is it important for my dog or cat to finish all of the Sulfamethoxazole and Trimethoprim Double Strength?

  • Sulfamethoxazole and Trimethoprim are antibiotics. Resistance is a major concern when using antibiotics. To help avoid resistance, it is important for you to use this for as long as your veterinarian has prescribed, even if you dog or cat is looking and feeling better.