What happens if I give my dog too much Benadryl?
What happens if I give my dog too much Benadryl? In living animals, hyperactivity, depression, hypersalivation, tachypnea, and tachycardia are the most common signs reported with ethanolamine-based antihistamines, usually occurring within 1 h of exposure (10). With overdose, dogs may also exhibit mydriasis, dry mucous membranes, disorientation, and fever (10).
How much Benadryl can I give my 40 pound dog?
When administering Benadryl to dogs, the general recommendation is to give 2 to 4 milligrams per kilogram of body weight, or 0.9 to 1.8 milligrams per pound of your dog's body weight 1-2 times per day. The effects of the medication typically last for around 6-8 hours.