Is Trazodone safe for dogs and cats?
Low risk for petsTrazodone is the most commonly prescribed behavioral drug in veterinary medicine for situational anxiety — used for veterinary visits, travel, thunderstorm phobia, post-surgical confinement, and separation anxiety; it is considered the safest major human antidepressant for dogs. Veterinary dosing: 2.5–7 mg/kg every 8–24 hours PRN or scheduled; commonly used as 'event medication' (given 1–2 hours before a stressful event) with a sedation profile superior to acepromazine for veterinary procedures. Safety profile: trazodone's 5-HT2A antagonism theoretically reduces rather than increases serotonin syndrome risk; it has a wide safety margin in dogs; reported toxicoses are uncommon and typically mild. Toxic dose: ASPCA data show mild signs (ataxia, sedation, vomiting) at >40–50 mg/kg; more significant CNS depression at >100 mg/kg; priapism has been reported as a veterinary adverse effect. Signs of overdose: excessive sedation, ataxia, vomiting, tachycardia; treatment is supportive. Interactions: selegiline (Anipryl) in dogs — potential serotonin enhancement; tramadol combination increases serotonin risk; otherwise wide compatibility. Availability: trazodone is unscheduled (not DEA-controlled), inexpensive, and widely available in generic form — these properties contribute to its widespread veterinary use.
What is trazodone?
The IUPAC name is 2-[3-[4-(3-chlorophenyl)piperazin-1-yl]propyl]-[1,2,4]triazolo[4,3-a]pyridin-3-one.
Also known as: 2-[3-[4-(3-chlorophenyl)piperazin-1-yl]propyl]-[1,2,4]triazolo[4,3-a]pyridin-3-one, Trazodon, Beneficat, Trazalon.
- IUPAC name
- 2-[3-[4-(3-chlorophenyl)piperazin-1-yl]propyl]-[1,2,4]triazolo[4,3-a]pyridin-3-one
- CAS number
- 19794-93-5
- Molecular formula
- C19H22ClN5O
- Molecular weight
- 371.9 g/mol
- SMILES
- C1CN(CCN1CCCN2C(=O)N3C=CC=CC3=N2)C4=CC(=CC=C4)Cl
- PubChem CID
- 5533
Risk for dogs
Low riskTrazodone is the most commonly prescribed behavioral drug in veterinary medicine for situational anxiety — used for veterinary visits, travel, thunderstorm phobia, post-surgical confinement, and separation anxiety; it is considered the safest major human antidepressant for dogs. Veterinary dosing: 2.5–7 mg/kg every 8–24 hours PRN or scheduled; commonly used as 'event medication' (given 1–2 hours before a stressful event) with a sedation profile superior to acepromazine for veterinary procedures. Safety profile: trazodone's 5-HT2A antagonism theoretically reduces rather than increases serotonin syndrome risk; it has a wide safety margin in dogs; reported toxicoses are uncommon and typically mild. Toxic dose: ASPCA data show mild signs (ataxia, sedation, vomiting) at >40–50 mg/kg; more significant CNS depression at >100 mg/kg; priapism has been reported as a veterinary adverse effect. Signs of overdose: excessive sedation, ataxia, vomiting, tachycardia; treatment is supportive. Interactions: selegiline (Anipryl) in dogs — potential serotonin enhancement; tramadol combination increases serotonin risk; otherwise wide compatibility. Availability: trazodone is unscheduled (not DEA-controlled), inexpensive, and widely available in generic form — these properties contribute to its widespread veterinary use.
Regulatory consensus
1 regulatory bodyhas classified Trazodone.
| Agency | Year | Classification | Notes |
|---|---|---|---|
| FDA | — | Approved for MDD | Major Depressive Disorder indication |
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 trazodone
- Industrial Facilities — Manufacturing plants, Chemical storage areas, Waste treatment sites
- Occupational Environments — Factories, Warehouses, Transportation vehicles
Safer alternatives
Lower-risk approaches that achieve a similar outcome to Trazodone:
-
Alternative drug class; Non-pharmacological therapy; Lowest effective dose
Trade-offs: Direct chemical substitution requires verification that the replacement does not introduce new hazards (regrettable substitution). Conduct full hazard assessment of proposed alternative before adoption.Relative cost: 1.2-2×
Frequently asked questions
Is trazodone safe for pets?
Trazodone is the most commonly prescribed behavioral drug in veterinary medicine for situational anxiety — used for veterinary visits, travel, thunderstorm phobia, post-surgical confinement, and separation anxiety; it is considered the safest major human antidepressant for dogs. Veterinary dosing: 2.5–7 mg/kg every 8–24 hours PRN or scheduled; commonly used as 'event medication' (given 1–2 hours before a stressful event) with a sedation profile superior to acepromazine for veterinary procedures. Safety profile: trazodone's 5-HT2A antagonism theoretically reduces rather than increases serotonin syndrome risk; it has a wide safety margin in dogs; reported toxicoses are uncommon and typically mild. Toxic dose: ASPCA data show mild signs (ataxia, sedation, vomiting) at >40–50 mg/kg; more significant CNS depression at >100 mg/kg; priapism has been reported as a veterinary adverse effect. Signs of overdose: excessive sedation, ataxia, vomiting, tachycardia; treatment is supportive. Interactions: selegiline (Anipryl) in dogs — potential serotonin enhancement; tramadol combination increases serotonin risk; otherwise wide compatibility. Availability: trazodone is unscheduled (not DEA-controlled), inexpensive, and widely available in generic form — these properties contribute to its widespread veterinary use.
What products contain trazodone?
Trazodone appears in: Manufacturing plants (Industrial facilities); Chemical storage areas (Industrial facilities); Factories (Occupational environments); Warehouses (Occupational environments).
See Trazodone in the pets app
Look up products containing trazodone, compare to alternatives, and explore the full data record.
Open in pets View raw API dataSources (2)
- FDA Prescribing Information: Trazodone (Desyrel/Oleptro) — MDD; SARI mechanism; priapism warning; insomnia off-label use; orthostatic hypotension; sedation profile; non-addictive hypnotic; favorable OD profile vs TCAs (2023) (2023) — regulatory
- Plumb's Veterinary Drug Handbook: Trazodone — canine situational anxiety; veterinary visit/travel/thunderstorm; post-surgical confinement; 2.5–7 mg/kg dosing; comparison to acepromazine; priapism in dogs; selegiline interaction (2023) (2023) — reference
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 →