Yes, I used to take them for months. Didn't put a dent in my allergies. After playing with the little furball yesterday I was careful to keep my hands away before thoroughly washing but still ended up in a sneezing fit for about 20 minutes. Which I knew would happen, but I couldn't resist playing with it. Got my hand slapped quite a bit, it was arching its little back up and "bap bap bap bap" at my hand, a literal southpaw.