Each 100 mg BOSULIF tablet contains 103.40 mg of bosutinib monohydrate, equivalent to 100 mg of bosutinib; each 500 mg BOSULIF tablet contains 516.98 mg of bosutinib monohydrate, equivalent to 500 mg of bosutinib.
Having said that, If your dog is itching and scratching all year long, then it's most likely due to either a food allergy or an allergy to something that is present all year such as dust mites or possibly even mange. In either case, you'll probably need more help to determine the cause which you can find here.
Arachnids such as spiders and ticks, and Insects including fleas, blackflies, deerflies, horseflies, mosquitoes, ants, bees, hornets and wasps, and arachnids such as spiders and ticks can cause an allergic reaction in sensitive dogs. Flea saliva is by far the most common insect allergen in dogs causing flea allergy dermatitis (FAD).