Cough Suppressant
Robitussin DM Dosage for Dogs
Calculate the safe Robitussin DM (Dextromethorphan) dose for your dog based on weight. Adjust the slider below for instant results.
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About Robitussin DM for Dogs
Robitussin DM (generic name: Dextromethorphan) is an over-the-counter medication in the Cough Suppressant category. It is commonly used for dogs to treat:
- Cough suppression
- Kennel cough symptom relief
Dosing Notes
Small dogs: 2.5 ml every 6 hours. Large dogs: 5 ml every 6 hours.
Warnings & Contraindications
Warnings
- Use ONLY Robitussin DM (dextromethorphan only)
- Avoid products with guaifenesin, acetaminophen, or other active ingredients
Do NOT Use If
- NOT recommended for cats
- Do not use in dogs on MAO inhibitors or serotonergic drugs
Important Notes
- Dogs only — consult vet for cats with cough
- If cough persists more than a few days, see your veterinarian
Robitussin DM Dosage Chart for Dogs
| Weight | Dose (mg) | Frequency |
|---|---|---|
| 5 lbs | 2.5 – 5 mg | Every 6-8 hours as needed |
| 10 lbs | 5 – 10 mg | Every 6-8 hours as needed |
| 20 lbs | 10 – 20 mg | Every 6-8 hours as needed |
| 30 lbs | 15 – 30 mg | Every 6-8 hours as needed |
| 40 lbs | 20 – 40 mg | Every 6-8 hours as needed |
| 50 lbs | 25 – 50 mg | Every 6-8 hours as needed |
| 60 lbs | 30 – 60 mg | Every 6-8 hours as needed |
| 80 lbs | 40 – 80 mg | Every 6-8 hours as needed |
| 100 lbs | 50 – 100 mg | Every 6-8 hours as needed |
40 lb Dog
Robitussin DM Dose
Generally safe for dogs at this dose
20 – 40mg
💧
Liquid Form
10.0 ml (2.0 tsp)
🕐
Frequency
Every 6-8 hours as needed
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Always consult your veterinarian before giving any medication to your pet. These dosages are general guidelines. Individual pets may require different dosing.