Use this Benadryl Dosage Calculator for Dogs to determine the appropriate amount of Benadryl (diphenhydramine) to administer to dogs.
Benadryl is an antihistamine commonly used to treat various conditions in dogs, including allergies, motion sickness, and mild sedation.
Benadryl Dosage Calculator for Dogs
| Dog Weight | Lower Dosage (1 mg/lb) | Upper Dosage (2 mg/lb) | 25mg Tablets (Lower) | 25mg Tablets (Upper) |
|---|---|---|---|---|
| 10 lbs | 10 mg | 20 mg | 0.4 (½ tablet) | 0.8 (1 tablet) |
| 25 lbs | 25 mg | 50 mg | 1 tablet | 2 tablets |
| 40 lbs | 40 mg | 80 mg | 1.6 (1½ tablets) | 3.2 (3 tablets) |
| 55 lbs | 55 mg | 110 mg | 2.2 (2 tablets) | 4.4 (4½ tablets) |
| 70 lbs | 70 mg | 140 mg | 2.8 (3 tablets) | 5.6 (5½ tablets) |
| 85 lbs | 85 mg | 170 mg | 3.4 (3½ tablets) | 6.8 (7 tablets) |
| 100 lbs | 100 mg | 200 mg | 4 tablets | 8 tablets |
More Calculators : – Dog Onion Toxicity Calculator – Dog Garlic Toxicity Calculator
How Much Benadryl To Give a 50 lb Dog
- Standard Dosage Range: 1-2 mg per pound of body weight
- Calculation:
- Lower end: 50 lbs × 1 mg/lb = 50 mg
- Upper end: 50 lbs × 2 mg/lb = 100 mg
- Dosage in 25 mg tablets:
- Lower end: 50 mg ÷ 25 mg/tablet = 2 tablets
- Upper end: 100 mg ÷ 25 mg/tablet = 4 tablets
- Recommended Dosage:
- Start with 2 tablets (50 mg) every 8-12 hours
- Do not exceed 4 tablets (100 mg) in a single dose
- Important Notes:
- Always start with the lower dosage
- Consult with a veterinarian before administering
- Adjust dosage based on the dog’s response and vet’s recommendation
- Consider using liquid Benadryl for more precise dosing
Benadryl Dosage For Dogs Calculation Formula
The general formula for calculating dosage of benadryl for dogs is based on the dog’s body weight and the standard recommended dose.
The typical dosage range for Benadryl in dogs is 1 to 2 mg per pound of body weight, administered two to three times daily.
To calculate the appropriate dosage, use the following formula:
Dog’s weight (in pounds) x Dosage (1-2 mg) = Total mg of Benadryl per dose
For example, if you have a 50-pound dog and you’re using the lower end of the dosage range (1 mg per pound):
50 pounds x 1 mg = 50 mg of Benadryl per dose
Dog Antihistamine Dosage Chart (KG)
| Dog Weight (kg) | Dosage Range (mg) | 25mg Tablets (Lower) | 25mg Tablets (Upper) |
|---|---|---|---|
| 2 kg | 2 – 4 mg | ⅛ tablet | ⅛ tablet |
| 5 kg | 5 – 10 mg | ¼ tablet | ½ tablet |
| 10 kg | 10 – 20 mg | ½ tablet | 1 tablet |
| 15 kg | 15 – 30 mg | ½ tablet | 1 tablet |
| 20 kg | 20 – 40 mg | 1 tablet | 1½ tablets |
| 25 kg | 25 – 50 mg | 1 tablet | 2 tablets |
| 30 kg | 30 – 60 mg | 1¼ tablets | 2½ tablets |
| 35 kg | 35 – 70 mg | 1½ tablets | 3 tablets |
| 40 kg | 40 – 80 mg | 1½ tablets | 3 tablets |
| 45 kg | 45 – 90 mg | 2 tablets | 3½ tablets |
| 50 kg | 50 – 100 mg | 2 tablets | 4 tablets |
How much 25mg benadryl can I give my dog?
When using 25mg Benadryl tablets, which is a common formulation, the dosage calculation requires an additional step.
Using the formula from the previous section, let’s consider a few examples:
- For a 25-pound dog: 25 pounds x 1 mg = 25 mg of Benadryl per dose In this case, one 25mg tablet would be appropriate.
- For a 50-pound dog: 50 pounds x 1 mg = 50 mg of Benadryl per dose This would equate to two 25mg tablets.
- For a 12-pound dog: 12 pounds x 1 mg = 12 mg of Benadryl per dose In this situation, you would need to halve a 25mg tablet to get close to the correct dosage.
How many benadryl for 70lb dog?
For a 70-pound dog, the Benadryl dosage calculation would be as follows:
Using the lower end of the dosage range (1 mg per pound): 70 pounds x 1 mg = 70 mg of Benadryl per dose
Using the higher end of the dosage range (2 mg per pound): 70 pounds x 2 mg = 140 mg of Benadryl per dose
If you’re using 25mg Benadryl tablets, this converts to:
- At the lower dosage: approximately 3 tablets (75 mg) per dose
- At the higher dosage: approximately 5-6 tablets (125-150 mg) per dose
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