Product Information

Description

Product details

Metronidazole is a nitroimidazole antibiotic used to treat a variety of bacterial and protozoal infections in dogs, cats, and horses.

Treats infections caused by certain bacteria and protozoal parasites, including giardiasis in dogs and cats
Can be prescribed to help treat diarrhea or inflammatory bowel disease in dogs and cats
Do not administer this medication to pregnant or nursing animals.
May be prescribed for other animal species; please consult your veterinarian.
While this drug does not have an FDA-approved indication for all animal uses, it is commonly accepted for veterinarians to prescribe this medication for use in animals.

This product contains a chemical on the Prop 65 List.

*Please note: this is a generic medication. Product packaging and appearance, including size, color, and shape, may differ from the description or images provided and are subject to manufacturer availability.

Sourced directly from the manufacturer or their approved distributor. Guaranteed genuine product backed by the manufacturer.

For

Dogs, Cats, and Horses

Active ingredient(s)

Metronidazole

Common brand names

Flagyl

Drug class

Nitroimidazole antibiotic

Product strength & size

This product is available in multiple strengths and sizes; please select the appropriate option for your pet as recommended by your veterinarian.

For current availability, please refer to the product selection above.

Usage

Metronidazole should be given orally as directed by your veterinarian. Wash your hands thoroughly with soap and water after handling the medication. Please consult your veterinarian before making any changes or discontinuing the prescribed dosing schedule.

This medication can be given with or without food; however, giving with food may help prevent gastrointestinal side effects and mask its bitter taste. Crushing or otherwise manipulating tablets may emphasize their bitter taste.

If your pet vomits or appears unwell after receiving a dose on an empty stomach, give future doses with food or a small treat. If vomiting continues, contact your veterinarian.

Administer the complete course of the medication as prescribed, even if your pet's condition has improved. Failure to administer the entire course of treatment may cause recurrence or worsening of the infection. Contact your veterinarian ahead of time if your pet needs a refill.

Missed doses

Administer the dose as soon as possible. If it is almost time for the next dose, skip the missed dose and continue with the regular schedule. Do not give two doses at once.

Storage

Store in a cool, dry place at a controlled room temperature (68 to 77°F, excursions permitted between 59 and 86°F). Keep in a tight, light-resistant container and out of the reach of children and pets. Store away from heat and direct sunlight. Do not store in the bathroom, near the kitchen sink, or in damp places. The medicine may break down if exposed to heat or moisture.

Side effects

The most common side effects with this medication are nausea, vomiting, diarrhea, decreased appetite, and weakness/drowsiness.

Although uncommon, neurologic disorders have been reported (particularly at high doses); signs of neurologic toxicity include (but may not be limited to) difficulty walking, loss of coordination, head tilt, and seizures.

Contact your veterinarian immediately if you notice your pet has any signs of neurologic toxicity, complete loss of appetite, or yellowing of the skin, whites of the eyes, and/or gums.

Notify your veterinarian if your pet experiences any of the effects described above, or if you notice any other side effects that are persistent or troublesome.

If you notice anything unusual, please consult your veterinarian.

Precautions

Do NOT administer this medication to pregnant or nursing animals.

This medication should NOT be administered to animals that are used for food (e.g., dairy animals).

Use with caution in animals with a history of seizures, neurological disorders, or liver impairment.

Do not administer to animals with a known history or suspected allergy/hypersensitivity to any nitroimidazole antibiotics, including this medication or any of its ingredients. Allergic reactions to medications may occur. Be sure to inform Vetsource and your veterinarian if your pet has any known drug sensitivities or allergies.

If your pet displays symptoms of an allergic reaction, discontinue therapy and call your veterinarian immediately or seek emergency veterinary attention. Symptoms may include (but are not limited to): swollen lips, tongue, face, or airways, difficulty breathing, agitation, profuse salivation, and widespread hives or itching.

Drug and food interactions

This medication should NOT be used concurrently with products that contain ethanol (alcohol) or propylene glycol, as a reaction may occur with symptoms including nausea, vomiting, cramps, and dizziness.

The following drugs* may have potential interactions with this medication: cyclosporine, mycophenolate, phenobarbital, sotalol, and warfarin.

*NOTE: this may not be a comprehensive list. Contact your veterinarian if your pet experiences any unusual reactions when different medications are given together.

Please ensure your veterinarian is aware of all medications and supplements that your pet is currently receiving. Your veterinarian may prescribe multiple medications, even if a potential drug interaction may occur. In these instances, your veterinarian may adjust the dosages or monitor your pet more closely.

Adverse reactions

If you are concerned that your pet has experienced an adverse reaction to this medication, please contact Vetsource Pet Owner Care at 877-738-4443.

Last revised: 4/30/2025

Description
Product details
Metronidazole is a nitroimidazole antibiotic used to treat a variety of bacterial and protozoal infections in dogs, cats, and horses.
- Treats infections caused by certain bacteria and protozoal parasites, including giardiasis in dogs and cats
- Can be prescribed to help treat diarrhea or inflammatory bowel disease in dogs and cats
- Do not administer this medication to pregnant or nursing animals.
- May be prescribed for other animal species; please consult your veterinarian.
- While this drug does not have an FDA-approved indication for all animal uses, it is commonly accepted for veterinarians to prescribe this medication for use in animals.
This product contains a chemical on the Prop 65 List.

*Please note: this is a generic medication. Product packaging and appearance, including size, color, and shape, may differ from the description or images provided and are subject to manufacturer availability.

Sourced directly from the manufacturer or their approved distributor. Guaranteed genuine product backed by the manufacturer.

For
Dogs, Cats, and Horses

Active ingredient(s)
Metronidazole

Common brand names
Flagyl

Drug class
Nitroimidazole antibiotic

Product strength & size
This product is available in multiple strengths and sizes; please select the appropriate option for your pet as recommended by your veterinarian.
For current availability, please refer to the product selection above.

Usage
Metronidazole should be given orally as directed by your veterinarian. Wash your hands thoroughly with soap and water after handling the medication. Please consult your veterinarian before making any changes or discontinuing the prescribed dosing schedule.
This medication can be given with or without food; however, giving with food may help prevent gastrointestinal side effects and mask its bitter taste. Crushing or otherwise manipulating tablets may emphasize their bitter taste.
If your pet vomits or appears unwell after receiving a dose on an empty stomach, give future doses with food or a small treat. If vomiting continues, contact your veterinarian.

Administer the complete course of the medication as prescribed, even if your pet's condition has improved. Failure to administer the entire course of treatment may cause recurrence or worsening of the infection. Contact your veterinarian ahead of time if your pet needs a refill.

Missed doses
Administer the dose as soon as possible. If it is almost time for the next dose, skip the missed dose and continue with the regular schedule. Do not give two doses at once.

Storage
Store in a cool, dry place at a controlled room temperature (68 to 77°F, excursions permitted between 59 and 86°F). Keep in a tight, light-resistant container and out of the reach of children and pets. Store away from heat and direct sunlight. Do not store in the bathroom, near the kitchen sink, or in damp places. The medicine may break down if exposed to heat or moisture.

Side effects
The most common side effects with this medication are nausea, vomiting, diarrhea, decreased appetite, and weakness/drowsiness.
Although uncommon, neurologic disorders have been reported (particularly at high doses); signs of neurologic toxicity include (but may not be limited to) difficulty walking, loss of coordination, head tilt, and seizures.
Contact your veterinarian immediately if you notice your pet has any signs of neurologic toxicity, complete loss of appetite, or yellowing of the skin, whites of the eyes, and/or gums.

Notify your veterinarian if your pet experiences any of the effects described above, or if you notice any other side effects that are persistent or troublesome.
If you notice anything unusual, please consult your veterinarian.

Precautions
Do NOT administer this medication to pregnant or nursing animals.
This medication should NOT be administered to animals that are used for food (e.g., dairy animals).
Use with caution in animals with a history of seizures, neurological disorders, or liver impairment.

Do not administer to animals with a known history or suspected allergy/hypersensitivity to any nitroimidazole antibiotics, including this medication or any of its ingredients. Allergic reactions to medications may occur. Be sure to inform Vetsource and your veterinarian if your pet has any known drug sensitivities or allergies.
If your pet displays symptoms of an allergic reaction, discontinue therapy and call your veterinarian immediately or seek emergency veterinary attention. Symptoms may include (but are not limited to): swollen lips, tongue, face, or airways, difficulty breathing, agitation, profuse salivation, and widespread hives or itching.

Drug and food interactions
This medication should NOT be used concurrently with products that contain ethanol (alcohol) or propylene glycol, as a reaction may occur with symptoms including nausea, vomiting, cramps, and dizziness.
The following drugs* may have potential interactions with this medication: cyclosporine, mycophenolate, phenobarbital, sotalol, and warfarin.
*NOTE: this may not be a comprehensive list. Contact your veterinarian if your pet experiences any unusual reactions when different medications are given together.

Please ensure your veterinarian is aware of all medications and supplements that your pet is currently receiving. Your veterinarian may prescribe multiple medications, even if a potential drug interaction may occur. In these instances, your veterinarian may adjust the dosages or monitor your pet more closely.

Adverse reactions
If you are concerned that your pet has experienced an adverse reaction to this medication, please contact Vetsource Pet Owner Care at 877-738-4443.

Last revised: 4/30/2025
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