General Drug Information and Indications

Levothyroxine sodium tablets for canine hypothyroidism; FDA-approved veterinary product. Levothyroxine sodium oral tablets for dogs (canine-specific FDA-approved formulation). Mechanism: T4 prodrug converted to T3 → thyroid hormone receptor agonist → metabolic rate regulation. Twice-daily dosing typically required in dogs due to high clearance rate. Monitor via T4 measurement 4–6 hrs post-pill. Key information Levothyroxine canine tablet. See levothyroxine entry. Administer consistently. Monitor T4 levels.

How to Give this Medication

Oral tablets (dogs): administer on an empty stomach (30–60 min before feeding). Separate from antacids, calcium, and iron by 4 hrs. Administer twice daily at consistent times. Measure T4 level 4–6 hrs post-pill. Store at room temperature; protect from light. If a dose is missed Administer as soon as you remember. If it is almost time for the next scheduled dose, skip the missed dose and resume the normal schedule. Never double up doses to make up for a missed one. A single missed dose is unlikely to cause immediate clinical problems. Resume normal dosing.

Side Effects

Thyrotoxicosis (overdose): tachycardia, polyphagia, weight loss, panting, diarrhea, PU/PD, excitability, hypertension. GI: diarrhea. Cardiac arrhythmias. Monitor T4 levels 4–6 hrs post-pill.

Precautions

For animals Monitor T4 (4–6 hrs post-pill in dogs). Do not switch brands without rechecking levels. See levothyroxine precautions. For people handling this medication Wash hands thoroughly with soap and water after handling. Avoid contact with eyes; if contact occurs, flush with water for 15 minutes and seek medical attention. Keep out of reach of children. If accidental ingestion occurs, contact Poison Control (1-800-222-1222). Thyroid hormone tablets — Wash hands thoroughly with soap and water after handling. after handling. Keep away from children.

Overdose

Contact your veterinarian. Levothyroxine overdose causes hyperthyroid-like signs: rapid heart rate, hyperactivity, increased thirst, and GI signs.

Thyro-tabs Canine dosage forms

ProductStrengthFormSizeType
THYRO-TABS (LEVOTHYROXINE) 0.2MG0.2 MGTablet1Commercial
THYRO-TABS (LEVOTHYROXINE) 0.8MG0.8 MGTablet1Commercial
THYRO-TABS (LEVOTHYROXINE) 0.6MG0.6 MGTablet—Commercial
THYRO-TABS (LEVOTHYROXINE) 0.6MG0.6 MGTablet—Commercial
THYRO-TABS (LEVOTHYROXINE) 0.7MG0.7 MGTablet1Commercial
THYRO-TABS (LEVOTHYROXINE) 0.1MG0.1 MGTablet1Commercial
THYRO-TABS (LEVOTHYROXINE) 0.2MG0.2 MGTablet1Commercial
THYRO-TABS (LEVOTHYROXINE) 0.4MG0.4 MGTablet1Commercial
THYRO-TABS (LEVOTHYROXINE) 0.5MG0.5 MGTablet1Commercial
THYRO-TABS (LEVOTHYROXINE) 0.6MG0.6 MGTablet1Commercial
THYRO-TABS (LEVOTHYROXINE) 0.7MG0.7 MGTablet1Commercial
THYRO-TABS (LEVOTHYROXINE) 0.8MG0.8 MGTablet1Commercial
THYRO-TABS (LEVOTHYROXINE) 0.8MG—Tablet1Commercial

Sources

This information is provided for educational purposes and is not a substitute for advice from your veterinarian. Source: Plumb's Veterinary Drug Handbook (Plumb, D.C., app.plumbs.com); FDA-approved label (Thyro-Tabs Canine, Lloyd Inc.)