Benadryl takes about 15 minutes to kick in. It's effects last around 4-6 hours, but it can remain in your body for up to 60 hours. Benadryl takes about 15 minutes to kick in.

The Benadryl tablets for sale in most stores are 25 mg. If your dog is 50 pounds, for example, give him 2 tablets (50 mg total) and see how he responds before giving him the larger dose.

Thousands of Benadryl bottles have been pulled from shelves because of a “child poisoning” risk, according to the U.S. Consumer Product Safety Commission. On March 20, the agency announced a ...

Thousands of bottles of a popular liquid Benadryl allergy product are being recalled because they lack child-resistant packaging that can help prevent poisoning, the U.S. Consumer Product Safety ...

Thousands of bottles of liquid Benadryl are being recalled for not having child-resistant packaging in place, the United States Consumer Product Safety Commission (CPSC) reported Thursday. Arsell ...

Do Benadryl Capsules Contain Xylitol? Xylitol, a sugar substitute that can be found in some human foods and dental products, can be poisonous to dogs, according to the FDA.