Stop stubborn diarrhea, Giardia and anaerobic GI infections fast with USP-grade dog metronidazole (often called Flagyl for dogs). Choose 250 mg or 500 mg strengths—both ship nationwide without a prescription and include weight-based dosing instructions.

Best-Selling Strengths

• Dog Metronidazole 250 mg (60 tabs)
• Dog Metronidazole 500 mg (60 tabs)

When to Use Metronidazole

A nitroimidazole antibiotic ideal for:

• Acute or chronic diarrhea linked to bacterial overgrowth
• Giardia and other protozoal infections
• Inflammatory bowel flare-ups requiring antimicrobial support
• Periodontal anaerobic bacteria when clindamycin is contraindicated

Weight-Based Dosage Guide

Standard guideline: 7.5 mg per lb of body weight every 12 hours. Use our Dosage Calculator for exact mg and tablet count. Examples:

• 20 lb dog → 150 mg (≈⅝ × 250 mg cap) twice daily
• 40 lb dog → 300 mg (≈1 × 250 mg + ⅕ cap) twice daily
• 80 lb dog → 600 mg (≈1 × 500 mg + ⅕ cap) twice daily

Storage & Safety Tips

• Give with a small meal to reduce nausea; avoid high-fat treats.
• Pair with probiotics two hours later to restore gut flora.
• Finish the full course—stopping early fuels resistant strains.
• Store capsules at 68–77 °F (20–25 °C) in a dry spot.
• Watch for side-effects: loss of appetite, vomiting, or ataxia. Overdose may cause neurologic signs—contact a vet immediately.