So, I gave Belle her first in a long time dose of 25 mg of diphenhydramine last night with food. This was around 7:30 p.m. We sat down to have dinner and then watch some TV. Belle slept like a rock. A couple of times I tried to wake her up by calling her name, which usually does the trick. However, she just kept on sleeping. Now, she could have been worn out from the vet’s visit; she did get her 6-month exam and shots at the same time, but it didn’t really seem like it.
This morning, she was sluggish to get up and moving and just seemed a little loopy. We just checked on her again and she seems to be getting better. However, this prompted me to start looking in to the side effects of the allergy medicine on dogs.
The first site I went to was written by a veterinarian and discussed the side effects of diphenhydramine or Benadryl. The common ones they listed were
- dry mouth
- retaining urine
Ok, that explains the sleepiness. The vet also went on to mention that the side effects might be stronger in older dogs and that different dogs may react differently and the dosage should be tailored to your animal. Belle definitely reacts poorly to most medicines, as seen in her urinary incontinence side effect with both prednisone and antibiotics. Even though the vet recommended 25 mg dose twice a day, I think we will try out once a day for a while. If Belle’s sluggishness doesn’t go away, but she is still itching, we will cut that dose in half and try that.
Read more about the side effects and details about diphenhydramine.