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Meds A-Z

Levetiracetam

Detailed information about Levetiracetam

Official label facts Owner quick guide first Marketing clearly labeled
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Reviewed / Updated / Sources

Reviewed: Not available

Updated: February 12, 2026, 7:40 PM UTC

Sources:

Pet Owner Quick Guide

Start here first for the simple next-step summary.

Used for:

Anti-seizure medication used as monotherapy or adjunct therapy.

What to watch for:

  • Dose adjustments may be needed in kidney disease
  • Vomiting (1 reports)
  • wobbly/unsteady walking (1 reports)
  • trouble breathing (1 reports)

When to call the vet:

  • Repeated vomiting or diarrhea.
  • Severe lethargy (hard to wake, very low energy).
  • Collapse or fainting.
  • Facial swelling or hives.
  • Blood in vomit or stool.

What to ask your vet today:

  • Is this medicine the right fit for my pet’s current symptoms?
  • Which warning signs mean I should call back right away?
  • How should I handle missed doses or refusal to take the medicine?
Safety & side effects

What to watch:

  • Dose adjustments may be needed in kidney disease
  • Vomiting
  • wobbly/unsteady walking
  • trouble breathing

Most reported reactions:

  • Vomiting (1 reports)
  • Unsteady walking (ataxia) (1 reports)
  • Trouble breathing (dyspnea) (1 reports)

When to call your vet:

  • Repeated vomiting or diarrhea.
  • Severe lethargy (hard to wake, very low energy).
  • Collapse or fainting.
  • Facial swelling or hives.
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Data freshness: source data appears current.

Latest refresh: Mar 21, 2026, 10:01 a.m.

Data freshness
  • Medication catalog: Source Roxee | Refreshed Feb 12, 2026, 7:40 PM UTC
  • Animal Drug Product Listing Directory (NDC): Source FDA | Refreshed Mar 21, 2026, 10:01 AM UTC
    Package/product NDCs from FDA’s electronic listing directory (XLS).
  • openFDA reaction terms: Source FDA openFDA | Refreshed Mar 9, 2026, 10:02 AM UTC
  • openFDA case summaries: Source FDA openFDA | Refreshed Feb 9, 2026, 3:19 AM UTC
Image coming soon
Levetiracetam

Levetiracetam

Drug type: Generic ingredient • Generic profile • No FDA branded products linked

Species: Both

Manufacturer: Not available (source)

Quick Facts

Official label facts first, then secondary summaries. Marketing content is separated below.

Species: Both
Manufacturer: Not available
Identifiers:
NDC Package: 62157-130-01 NDC Package: 62157-400-01 NDC Package: 62157-697-01 NDC Package: 73377-029-01 NDC Package: 73377-029-02 NDC Package: 73377-029-03 NDC Package: 73377-029-04 NDC Product: 62157 NDC Product: 73377

Warnings / Contraindications

Dose adjustments may be needed in kidney disease.

  • High: Dose adjustments may be needed in kidney disease.
Source metadata:

Adverse Reactions

Snapshot first, detailed rows second. This section summarizes signal data and is not a diagnosis.

Tap or hover a reaction to see what it means in plain language.

Tracked signals
32
Reported cases
32
Serious reports
32
Species represented
2
Grouped by Body System
Digestive (2) · Vomiting, Bloody diarrhoea Skin & allergy (1) · Head twitching Neurologic (3) · Unsteady walking (ataxia), Circling - neurological disorder, Cerebellar ataxia Behavior (2) · Biting -aggression, Behavioral disorder (unspecified) Other (24) · Trouble breathing (dyspnea), Heart murmur, Glucosuria
Most Reported Reactions
Reaction Body system Cases Species Serious cases
Digestive 1 Dog 1
Neurologic 1 Cat 1
Other 1 Dog 1
Other 1 Cat 1
Skin & allergy 1 Cat 1
Other 1 Cat 1
Other 1 Dog 1
Other 1 Dog 1

Species coverage: Cat (19) Dog (13)

View detailed reaction table
Reaction Body system Species Seriousness Frequency Reports
Digestive Dog Serious - 1
Neurologic Cat Serious - 1
Other Dog Serious - 1
Other Cat Serious - 1
Skin & allergy Cat Serious - 1
Other Cat Serious - 1
Other Dog Serious - 1
Other Dog Serious - 1
Other Dog Serious - 1
Other Cat Serious - 1
Other Cat Serious - 1
Other Dog Serious - 1
Other Cat Serious - 1
Other Cat Serious - 1
Other Cat Serious - 1
Other Cat Serious - 1
Other Dog Serious - 1
Other Cat Serious - 1
Other Cat Serious - 1
Neurologic Cat Serious - 1
Neurologic Cat Serious - 1
Digestive Dog Serious - 1
Other Dog Serious - 1
Behavior Cat Serious - 1
Behavior Dog Serious - 1
Other Dog Serious - 1
Other Cat Serious - 1
Other Dog Serious - 1
Other Cat Serious - 1
Other Cat Serious - 1
Other Cat Serious - 1
Other Dog Serious - 1
Source metadata:

Storage & Handling

Store at room temperature.

Veterinary reference (advanced)

Canonical medication sections are above. This legacy block remains available for deeper cross-reference without cluttering the primary workflow.

At a Glance

Quick facts and links to official labeling and safety signals.

Data freshness
  • Medication catalog: Source Roxee | Refreshed Feb 12, 2026, 7:40 PM UTC
  • Animal Drug Product Listing Directory (NDC): Source FDA | Refreshed Mar 21, 2026, 10:01 AM UTC
    Package/product NDCs from FDA’s electronic listing directory (XLS).
  • openFDA reaction terms: Source FDA openFDA | Refreshed Mar 9, 2026, 10:02 AM UTC
  • openFDA case summaries: Source FDA openFDA | Refreshed Feb 9, 2026, 3:19 AM UTC
Official (FDA)
Identity: Generic ingredient • No FDA branded products linked
No official FDA brand rows linked yet for this ingredient.
Case-reported brands (openFDA): MSK
Catalog species: Both
Safety (openFDA)
Top reactions: Dog 16 • Cat 8 • View
Case summaries: 10 (showing 8) • View
openFDA reports are unverified and do not prove causation.
Diagnosis Codes

Diagnosis-code mappings are not available for this medication yet.

Counseling and Monitoring Highlights

Global Pet owner/Vet mode is controlled in the header. This section avoids duplicate in-page persona tabs.

Owner-facing counseling points
  • Dose adjustments may be needed in kidney disease. (Contraindication, High)
Top reaction signals
Vomiting (1) Unsteady walking (ataxia) (1) Trouble breathing (dyspnea) (1) Heart murmur (1) Head twitching (1) Glucosuria (1) Flaking skin (1) Fear/fearful (1)

Identifiers & Packages

Normalized identifiers (NDC/NADA/ANADA) and package metadata from regulator listings.

Identifiers
NDC Package: 62157-130-01 NDC Package: 62157-400-01 NDC Package: 62157-697-01 NDC Package: 73377-029-01 NDC Package: 73377-029-02 NDC Package: 73377-029-03 NDC Package: 73377-029-04 NDC Product: 62157 NDC Product: 73377
Package NDC Product NDC Form / Route Status
62157-130-01 62157 -
62157-400-01 62157 -
62157-697-01 62157 -
73377-029-01 73377 -
73377-029-02 73377 -
73377-029-03 73377 -
73377-029-04 73377 -

Data Sources & Change Log

Every non-trivial field is expected to include provenance and update timestamps.

Official 1 Clinical 3 Manufacturer 0 Marketing 0
Current Field Facts
  • contraindications: Dose adjustments may be needed in kidney disease. (Clinical, 2026-02-12)
  • storage_handling: Store at room temperature. (Clinical, 2026-02-12)
  • usage: Anti-seizure medication used as monotherapy or adjunct therapy. (Clinical, 2026-02-12)
  • side_effects: Sedation, ataxia; generally well tolerated. (Official, 2026-02-12)
Recent Revisions
  • side_effects updated 2026-02-12 19:40 by etl_backfill • Backfilled from existing medication fields
  • contraindications updated 2026-02-12 19:40 by etl_backfill • Backfilled from existing medication fields
  • usage updated 2026-02-12 19:40 by etl_backfill • Backfilled from existing medication fields

Usage

Anti-seizure medication used as monotherapy or adjunct therapy.

Contraindications

Dose adjustments may be needed in kidney disease.

Side Effects

Sedation, ataxia; generally well tolerated.

Source: FDA openFDA • Reference

Top Reported Reactions (openFDA)

De-duplicated reaction terms grouped by body system from FDA openFDA reports (not verified; does not prove causation).

Digestive
Vomiting (1) • Dog Bloody diarrhoea (1) • Dog

Showing top 5 for Digestive.

Skin & allergy
Head twitching (1) • Cat

Showing top 5 for Skin & allergy.

Neurologic
Unsteady walking (1) • Cat Circling - neurological disorder (1) • Cat Cerebellar ataxia (1) • Cat

Showing top 5 for Neurologic.

Behavior
Biting -aggression (1) • Cat Behavioral disorder (1) • Dog

Showing top 5 for Behavior.

Other
Trouble breathing (1) • Dog Heart murmur (1) • Cat Glucosuria (1) • Cat Flaking skin (1) • Dog Fear/fearful (1) • Dog
Show more (19)
Falling (1) • Dog Elevated alanine aminotransferase (1) • Cat Electrolyte disorder (1) • Cat Easily startled (1) • Dog Dysphoria (1) • Cat Dysphagia (1) • Cat Dull (1) • Cat Dilated pupils (1) • Cat Decreased activity (1) • Dog Death by euthanasia (1) • Cat Confusion (1) • Cat Blinking (1) • Dog Apathy (1) • Dog Anaemia NOS (1) • Cat Allergy NOS (1) • Dog Abnormal serum protein NOS (1) • Cat Abnormal movement NOS (1) • Cat Abnormal menace reflex test (1) • Cat Abdominal pain (1) • Dog

Showing top 5 for Other.

Data source: FDA openFDA Animal & Veterinary adverse event reports.

Adverse Event Case Summaries (openFDA)

These are individual FDA adverse event reports. They are unverified and do not prove the medication caused the reaction.

Dog, ['Pit Bull', 'Dog (unknown)'], Male, 4.33 year, 26.31 kilogram • Drug: MSK, Unknown, Dose: 750 Milligram per animal, Frequency: 12 per hour • Reactions: Seizure NOS, Flaking skin, Allergy NOS • Outcome: Ongoing

  • Report ID: USA-USFDACVM-2025-US-053013
  • Serious AE: Yes
  • Treated For AE: Yes
  • Sex: Male
  • Age: 4.33 Year
  • Weight: 26.310 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Unknown
  • Dose: 750 Milligram per animal
  • Frequency: 12 per hour
Reactions Reported:
Seizure NOS Flaking skin Allergy NOS
Outcomes: Ongoing

Dog, Terrier - Yorkshire, Female, 4 year, 4.173 kilogram • Drug: MSK, Solution/drops, Unknown • Reactions: Seizure NOS, Falling, Shaking • Outcome: Recovered/Normal

  • Report ID: USA-USFDACVM-2025-US-053323
  • Serious AE: Yes
  • Treated For AE: No
  • Sex: Female
  • Age: 4.00 Year
  • Weight: 4.173 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Unknown
  • Form: Solution/drops
Reactions Reported:
Seizure NOS Falling Shaking
Outcomes: Recovered/Normal

Dog, ['Terrier (unspecified)', 'Crossbred Canine/dog'], Male, 9 year, 5.443 kilogram • Drug: MSK, Oral, Frequency: 8 per hour • Reactions: Tiredness (lethargy), Walking difficulty, Not eating, Decreased activity, Fear/fearful… • Outcome: Ongoing

  • Report ID: USA-USFDACVM-2025-US-054141
  • Serious AE: Yes
  • Treated For AE: Yes
  • Sex: Male
  • Age: 9.00 Year
  • Weight: 5.443 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Oral
  • Frequency: 8 per hour
Reactions Reported:
Tiredness (lethargy) Walking difficulty Not eating Decreased activity Fear/fearful Vocalisation Not himself/herself Trouble breathing (dyspnea) Abdominal pain Pawing Blinking Ocular discharge Neck pain - neurological Localised pain NOS Staring Easily startled Apathy Painful defecation Bloody diarrhoea Tense muscles Tense abdomen Behavioral disorder (unspecified) Vomiting
Outcomes: Ongoing

Dog, Crossbred Canine/dog, Female, 10 year, 10.342 kilogram • Drug: MSK, Unassigned, Unknown • Reactions: Seizure NOS • Outcome: Ongoing

  • Report ID: USA-USFDACVM-2025-US-050056
  • Serious AE: Yes
  • Treated For AE: Yes
  • Sex: Female
  • Age: 10.00 Year
  • Weight: 10.342 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Unknown
  • Form: Unassigned
Reactions Reported:
Seizure NOS
Outcomes: Ongoing

Dog, ['Retriever (unspecified)', 'Retriever - Nova Scotia Duck Tolling'], Male, 9 year, 14.651 kilogram • Drug: MSK, Unassigned, Oral • Reactions: Seizure NOS, Increased seizure frequency • Outcome: Ongoing

  • Report ID: USA-USFDACVM-2025-US-050615
  • Serious AE: Yes
  • Treated For AE: No
  • Sex: Male
  • Age: 9.00 Year
  • Weight: 14.651 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Oral
  • Form: Unassigned
Reactions Reported:
Seizure NOS Increased seizure frequency
Outcomes: Ongoing

Cat, Domestic Shorthair, Female, 14.4 year, 3.901 kilogram • Drug: MSK, Unassigned, Unknown, Frequency: 12 per hour • Reactions: Seizure NOS • Outcome: Ongoing

  • Report ID: USA-USFDACVM-2025-US-036129
  • Serious AE: Yes
  • Treated For AE: Yes
  • Sex: Female
  • Age: 14.40 Year
  • Weight: 3.901 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Unknown
  • Form: Unassigned
  • Frequency: 12 per hour
Reactions Reported:
Seizure NOS
Outcomes: Ongoing

Cat, Persian, Male, 15 year, 4.944 kilogram • Drug: MSK, Solution, Unknown, Dose: 2 mL per dose, Frequency: 12 per hour • Reactions: Not eating, Increased drinking, Weight loss, Elevated alanine aminotransferase, Jaundice… • Outcome: Euthanized

  • Report ID: USA-USFDACVM-2025-US-030246
  • Serious AE: Yes
  • Treated For AE: Yes
  • Sex: Male
  • Age: 15.00 Year
  • Weight: 4.944 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Unknown
  • Form: Solution
  • Dose: 2 mL per dose
  • Frequency: 12 per hour
Reactions Reported:
Not eating Increased drinking Weight loss Elevated alanine aminotransferase Jaundice Death by euthanasia
Outcomes: Euthanized

Cat, Domestic Shorthair, Unknown, 2 year, 4.1 kilogram • Drug: MSK, Unknown, Frequency: 1 per day • Reactions: Ketosis, Lack of efficacy - NOS, Abnormal serum protein NOS, Glucosuria • Outcome: Outcome Unknown

  • Report ID: USA-USFDACVM-2025-US-018880
  • Serious AE: Yes
  • Treated For AE: No
  • Sex: Unknown
  • Age: 2.00 Year
  • Weight: 4.100 Kilogram
  • Case-reported brand: MSK
  • Case-reported manufacturer: MSK
  • Route: Unknown
  • Frequency: 1 per day
Reactions Reported:
Ketosis Lack of efficacy - NOS Abnormal serum protein NOS Glucosuria
Outcomes: Outcome Unknown

Data source: FDA openFDA Animal & Veterinary adverse event reports.

Overdose Information

No approved overdose-management text is linked yet. If overdose is suspected, contact a veterinarian or emergency clinic immediately.

Storage & Handling

Store at room temperature.

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