Skip to main content
MD
MedicalDictionary.comThe Free Veterinary Medical Dictionary
Prescription / Chart Abbreviation🐕 Dogs🐈 Catscardiovascularendocrinegastrointestinalhematologic immunemusculoskeletalneurologicalrespiratoryurinary

TID (Three Times Daily)

🗣️ Pronounced:T-I-D / ter in DEE-ay
In One Sentence (Plain English)

A prescription abbreviation from Latin "ter in die," directing a medication to be administered three times a day, roughly every 8 hours.

Editorial Status: Verified from peer-reviewed veterinary sources (v1.0)
Updated: 2026-01-15

💬 In Plain English

TID stands for "ter in die," which means three times a day. When this abbreviation appears on a prescription label, the medication is intended to be given approximately every 8 hours (for example, at 7:00 AM, 3:00 PM, and 11:00 PM). Drugs that are prescribed TID typically have short half-lives, meaning your pet’s body clears the medication quickly, so three evenly spaced doses are required to maintain continuous therapeutic benefit throughout the day and night.

🔬 Clinical & Technical Depth

For Vets & Technicians

Formal Clinical Definition

Pharmacological administration frequency abbreviation derived from Latin "ter in die" (three times daily). Directs dosing intervals roughly targeting every 8 hours (q8h) to sustain minimal effective drug concentrations.

Why Veterinarians Use It

Veterinarians prescribe TID for medications that are rapidly metabolized or cleared by the liver and kidneys, such as certain antibiotics (amoxicillin-clavulanate, metronidazole) or short-acting analgesics (gabapentin).

Clinical Context Encountered

Found on prescription labels for short-acting pain medications, ocular drops, or antibiotics.

Clinical Reference Guide (Prescription / Chart Abbreviation)

Full ExpansionTer In Die (Latin for "three times in a day")

Give the medication three times each day, spaced approximately 8 hours apart (e.g., morning, mid-afternoon, and bedtime).

Where You Encounter It

  • Oral prescription medications with short half-lives
  • Eye drops for corneal ulcers or severe conjunctivitis
  • Hospital patient treatment flowsheets
🚨 Red Flag Warnings (When to Contact an Emergency Vet)
  • •Do not compress all three TID doses into daytime waking hours: leaving a 14-hour gap overnight causes medication levels to drop below therapeutic efficacy.

❓ Questions to Ask Your Veterinarian

Take these actionable questions with you to your next clinic visit or appointment:

  • 1What practical daily schedule (e.g., 7 AM, 3 PM, 11 PM) fits this medication best?
  • 2If I am away at work during the day, is there an extended-release or alternative twice-daily (BID) option available?

Academic & Clinical References

  • Veterinary Medical Abbreviations and Prescription Notation Standards
    Organization: American Animal Hospital Association (AAHA) • Accessed: 2026-01-10
    https://www.aaha.org