They say you need the shots for 3–5 years, I went twice a week in the beginning, probably for about 3 months (but that’s because I was allergic to EVERYTHING) and then it tapered off to once a week and then once every two weeks and then once a month. And I want to say that I started noticing relief after 3–6 months, so it probably wouldn’t be an immediate answer for this summer, but definitely by next summer you should notice a huge difference. And I only did it for 2 years and then I quit because I got pregnant and didn’t want to do this while pregnant, but even now my allergies are still less than others, so even though I didn’t finish it out, it has definitely been worth it.