The standard and widely recommended dosage of Benadryl (diphenhydramine) for dogs is approximately 1 mg per pound of the dog's body weight , given two to three times a day. This translates to about 2 to 4 mg per kilogram of body weight
. For example:
- A 10-pound dog would typically receive about 10 mg of Benadryl per dose.
- A 50-pound dog would receive about 50 mg per dose.
Dosage forms and calculations:
- Tablets: Most Benadryl tablets come in 25 mg doses, so you may need to cut tablets to achieve the correct dose.
- Liquid Benadryl: Usually contains 12.5 mg per 5 ml (2.5 mg/ml). To calculate the liquid dose, divide the dog's weight in pounds by 2.5. For example, a 10-pound dog would get 4 ml of liquid Benadryl
Dosing frequency:
Benadryl can be given every 8 hours (three times a day), but some sources
suggest twice a day may be sufficient depending on the dog's condition and
response
. Important considerations:
- Always ensure the Benadryl product contains only diphenhydramine without added ingredients like acetaminophen or decongestants, which can be harmful.
- Monitor your dog for side effects such as drowsiness or lethargy.
- Consult your veterinarian before starting Benadryl to confirm the appropriate dose and ensure it is safe for your dog's specific health condition
Summary Dosage Chart Example (Tablet Form)
Dog Weight (lbs)| Benadryl Dose (mg)
---|---
10| 10
20| 20
30| 30
40| 40
50| 50
Summary Dosage Chart Example (Liquid Form, 12.5 mg/5 ml)
Dog Weight (lbs)| Benadryl Dose (ml)
---|---
10| 4
20| 8
30| 12
40| 16
50| 20
Always confirm with your vet before administering any medication.
