Published dose range
The published veterinary reference range for loratadine in dogs is 0.2-0.5 mg per kg of body weight, given every 24h. In practice: 5 mg small dog / 10 mg large dog daily.
Source: Veterinary Partner (VIN) →Published range by weight
| Weight | Loratadine (published range) |
|---|---|
| 5 lb dog | 0.5-1.1 mg |
| 10 lb dog | 0.9-2.3 mg |
| 20 lb dog | 1.8-4.5 mg |
| 30 lb dog | 2.7-6.8 mg |
| 40 lb dog | 3.6-9.1 mg |
| 50 lb dog | 4.5-11 mg |
| 60 lb dog | 5.4-14 mg |
| 80 lb dog | 7.3-18 mg |
| 100 lb dog | 9.1-23 mg |
Computed from the published 0.2-0.5 mg/kg reference range, every 24h. Product strengths rarely split evenly, so round DOWN to the nearest practical dose and confirm with your vet.
Plain loratadine ONLY. Claritin-D (pseudoephedrine) is toxic.
Skip it or ask a vet first if
Claritin-D / any -D decongestant version
If you think you overdosed
Call the Pet Poison Helpline: 855-764-7661 or ASPCA Poison Control: 888-426-4435. Both are staffed 24/7 by veterinary toxicologists.