Pet Safety / Compounds / Grapiprant

Is Grapiprant safe for dogs and cats?

Low risk for pets

FDA-approved for dogs >3.6 kg. Novel mechanism: blocks pain/inflammation via EP4 without COX inhibition. Better GI/renal safety than traditional NSAIDs.

What is grapiprant?

CAS number
415903-37-6
Molecular formula
C26H29N3O4S
Molecular weight
479.59 g/mol
SMILES
CC(C)C1=CC=C(C=C1)C(=O)NS(=O)(=O)C2=CC=C(C=C2)OC3=CC=CC=N3
PubChem CID
11270790

Risk for dogs

Low risk

FDA-approved for dogs >3.6 kg. Novel mechanism: blocks pain/inflammation via EP4 without COX inhibition. Better GI/renal safety than traditional NSAIDs.

Risk for cats

Low risk

Not approved for cats. Studies ongoing.

Regulatory consensus

1 regulatory bodyhas classified Grapiprant.

AgencyYearClassificationNotes
FDA2016Approved veterinary drug (NADA 141-455)

Regulators apply different standards of evidence — animal-data weighting, exposure-pattern assumptions, epidemiological power thresholds — which is why two scientific bodies can review the same data and reach different conclusions. The disagreement is the data.

Where pets encounter grapiprant

  • Veterinary Medicine

Safer alternatives

Lower-risk approaches that achieve a similar outcome to Grapiprant:

  • Carprofen (traditional NSAID)
    Trade-offs: Effective for mild-to-moderate pain; avoids opioid dependence risk; GI and cardiovascular risks with chronic NSAID use; ceiling effect limits efficacy for severe pain; available OTC.
    Relative cost: 1.2-2×
  • Robenacoxib (COX-2)
    Trade-offs: Removes 95-99% of dissolved contaminants including metals, PFAS, nitrates; wastes 2-4 gallons per gallon produced (improving with newer systems); removes beneficial minerals; $0.05-0.25/gallon; requires pre-treatment for longevity.
    Relative cost: 1.2-2×

Frequently asked questions

Is grapiprant safe for pets?

FDA-approved for dogs >3.6 kg. Novel mechanism: blocks pain/inflammation via EP4 without COX inhibition. Better GI/renal safety than traditional NSAIDs.

See Grapiprant in the pets app

Look up products containing grapiprant, compare to alternatives, and explore the full data record.

Open in pets View raw API data

Sources (1)
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Reference data, not professional advice. Aggregates publicly available regulatory and scientific data; not a substitute for veterinary, medical, legal, or regulatory advice. Why we built ALETHEIA →