What time of day should I give my dog Benadryl?
What time of day should I give my dog Benadryl? Dogs can be given Benadryl® every eight to 12 hours (two to three times a day).
How do dogs feel on Benadryl?
Common side effects of Benadryl include constipation, sedation, urinary retention, diarrhea, vomiting, increased heart rate, and loss of appetite for some dogs. Always be sure to monitor your dog closely when giving medication for the first time.