Chronic Diseases & Special Conditions

Dog Medication & Diet: Essential Tips for Treated Dogs

NSAIDs, corticosteroids, antibiotics, and dewormers each require specific dietary considerations for your dog. Learn how to support your dog's health during treatment.

2 min readReviewed: Nov 4, 2025

When to see a vet IMMEDIATELY

  • •Blood in stool or vomit
  • •Lethargy, not drinking, or not eating for 24+ hours
  • •Repeated vomiting, especially if water won't stay down
  • •Swollen or painful abdomen, whimpering
  • •Diarrhea lasting more than 3 days, or worsening symptoms

This article is informational and does not replace veterinary examination.

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Medication and Diet

1. NSAIDs

Examples: Carprofen (Rimadyl), Meloxicam (Metacam), Firocoxib, Robenacoxib.

  • ALWAYS with food
  • With plenty of water
  • Avoid concurrent use with corticosteroids (risk of stomach ulcers!)
  • Warning signs: vomiting, loss of appetite, black stool (digested blood), jaundice

2. Corticosteroids

Examples: Prednisolone, Prednisone, Dexamethasone.

  • With food
  • Increased thirst and urination
  • Increased appetite — monitor dosage
  • Avoid salty foods
  • Calcium supplementation may be needed for long-term use

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3. Antibiotics

Examples: Synulox, Doxycycline, Metronidazole, Enrofloxacin.

  • With food
  • EXCEPTION: Doxycycline should NOT be given with calcium
  • Probiotic supplementation is essential

4. Dewormers

With or after food. If vomited: repeat within 2 hours.

5. Thyroid Hormone

  • On an empty stomach
  • Separate from calcium-containing products by 4 hours
  • Soy can reduce absorption

Special Interactions

MedicationTo Avoid
DoxycyclineMilk, cheese, calcium
TetracyclineIron, calcium
ThyroidSoy, calcium
WarfarinHigh Vitamin K (green leafy vegetables)
CyclosporineHigh fat

General Rules

  1. Read the package insert
  2. Consult your veterinarian
  3. AVOID NSAID + Steroid combination
  4. Keep a log
  5. NEVER give human medication (ibuprofen, acetaminophen are FATAL!)

Emergency Vet

🚨 Allergic reaction, severe vomiting/diarrhea, black stool, jaundice, loss of consciousness/seizures, accidental human medication ingestion.

References

  1. 1.WSAVA Global Nutrition Committee — WSAVA Global Nutrition Guidelines. World Small Animal Veterinary Association, 2021. https://wsava.org/global-guidelines/global-nutrition-guidelines/ (accessed: 2026-09-10)
  2. 2.American Veterinary Medical Association — Household hazards: foods and substances that are toxic to pets. AVMA, 2024. https://www.avma.org/resources-tools/pet-owners/petcare/household-hazards (accessed: 2026-09-10)
  3. 3.National Research Council (US), Committee on Animal Nutrition — Nutrient Requirements of Dogs and Cats. National Academies Press, Washington DC, 2006. https://doi.org/10.17226/10668 (accessed: 2026-09-10)

This is general information and does not replace a veterinary diagnosis.

Reka Fazekas-Birizdo

This guide was compiled based on the expert input of Reka Fazekas-Birizdo canine nutritionist.

Certified Canine Nutritionist

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