Benadryl can be given to a kitten to alleviate sneezing caused by allergies, according to petMD. A veterinarian must diagnose the cause of the sneezing, decide if Benadryl is the appropriate treatment and determine the appropriate dosage if it is needed.
WebMD advises that sneezing in kittens can be caused by common upper respiratory infections. Bordetella, feline leukemia, feline immunodeficiency virus, chlamydia and feline infectious peritonitis are other infections that may cause sneezing. A vet may prescribe antibiotics or other medications to treat these conditions.
Allergies can also cause sneezing in kittens, reports WebMD. While a vet may prescribe Benadryl to alleviate sneezing, it is best to identify the allergen and reduce or eliminate the kitten's exposure to it.
petMD emphasizes that while Benadryl is available over the counter, it can produce vomiting, diarrhea and sedation, among other side effects. It is also contraindicated in cats with other pre-existing conditions. It is critical that Benadryl be administered to a kitten under the direction and supervision of a veterinarian.