OTC Antihistamine For Dogs. I got this list from my vet. You can use this if your dog has allergies or is stung by a bee. Just DO NOT USE ANTIHISTAMINE that has DECONGESTANTS in them it's not good for them.
It's tough to figure out what your dog is allergic to when they have skin allergies. Here are some tips from someone with a really itchy, allergic dog. Have you tried apple cider vinegar or considered a possible food allergy?
Skin Allergies in Dogs: Home Remedies to Try Before Seeing Your Vet
Food allergies account for 10–15% of all allergies in dogs and cats. Learn about symptoms, the most common food allergens, and what to do if your dog or cat has a food allergy using the infographic below. You can also explore limited ingredient diets for your pet using Petco's Pet Food Advisor.