For anxious dogs, the evidence-based pre-visit protocol combines oral gabapentin the evening before with gabapentin, melatonin, and oral-transmucosal acepromazine administered 90–120 minutes before the appointment. Specifically: gabapentin 20–25 mg/kg PO the night prior, then gabapentin 20–25 mg/kg PO plus melatonin 3–5 mg PO plus acepromazine 0.05 mg/kg oral-transmucosal, all given 90–120 minutes before arrival. This protocol reduced mean stress scores from 27.11 at baseline to 21.84, and increased sedation scores from 0.68 to 1.39, in anxious and aggressive dogs. Journal of the… Older dogs showed greater stress reduction and deeper sedation with this regimen. Journal of the…
For anxious cats, gabapentin is the preferred pre-visit anxiolytic, supported by evidence as a behavioral modifier and stress reducer when given several hours before hospital visits. AAHA Clinical G… The 2019 AAHA Dental Care Guidelines specifically recommend gabapentin for cats, ideally administered the evening before and at least 2 hours before presentation. AAHA Clinical G… Specific mg/kg dosing for cats is not defined in the available sources.
Trazodone is an established alternative for dogs and is listed alongside gabapentin as a commonly used pre-visit pharmaceutical in the 2020 AAHA Anesthesia and Monitoring Guidelines. AAHA Clinical G… The 2019 AAHA Dental Care Guidelines recommend trazodone for dogs, given the evening before and at least 2 hours before presentation. AAHA Clinical G… For cats, oral trazodone at 50, 75, and 100 mg produced activity reductions of 83%, 46%, and 66%, respectively, with peak sedation at 2 hours post-administration for the 100 mg dose; no adverse effects or laboratory abnormalities were detected at any dose. Journal of Feli… Behavioral scores during examination at 90 minutes post-treatment were not significantly different from placebo at the 100 mg dose, suggesting sedation precedes full anxiolytic effect during the exam window. Journal of Feli…
Benzodiazepines (alprazolam, midazolam, lorazepam) and clonidine are additional owner-administered options for both dogs and cats, given 1–2 hours before the exam with a repeat dose 30 minutes before the exam; dosing is highly individualized and requires trial and error to optimize. AAHA Clinical G… All of these agents can be combined with dexmedetomidine in-hospital if additional chemical restraint is needed. AAHA Clinical G…
When a pre-visit anxiolytic has been administered, the in-hospital anesthetic protocol must be adjusted. The synergistic effect between pre-visit anxiolytics and induction and maintenance agents requires reduction in premedication, induction, and maintenance drug doses. AAHA Clinical G… Pre-visit sedation with these agents also reduces the risk of staff injury during restraint. AAHA Clinical G…
| Agent | Canine Protocol | Feline Protocol | Key Caveat |
|---|---|---|---|
| Gabapentin + Melatonin + Acepromazine (GMA) | Gabapentin 20–25 mg/kg PO evening prior; Gabapentin 20–25 mg/kg PO + Melatonin 3–5 mg PO + Acepromazine 0.05 mg/kg OTM, 90–120 min before visit | Not studied in sources | Sedation is mild; older dogs respond more strongly Journal of the… |
| Gabapentin alone | Recommended; evening before + ≥2 hr before visit AAHA Clinical G… | Recommended; evening before + ≥2 hr before visit AAHA Clinical G…+1 | Specific mg/kg dose for cats not defined in sources |
| Trazodone | Recommended; evening before + ≥2 hr before visit AAHA Clinical G…+1 | 50–100 mg flat dose PO; peak sedation at 2 hr post-dose Journal of Feli… | Behavioral exam scores at 90 min not significantly improved vs. placebo in cats Journal of Feli… |
| Benzodiazepines | 1–2 hr before exam; repeat at 30 min before AAHA Clinical G… | 1–2 hr before exam; repeat at 30 min before AAHA Clinical G… | Highly individualized dosing; trial and error required AAHA Clinical G… |
Would you like the in-hospital injectable sedation options to use when the oral pre-visit protocol provides insufficient effect?