I recently got both Shingrix shots in the States a couple of months apart. Shingrix was the only vaccine that I've ever experienced difficulty with. I had a very very sore arm for three days with the first shot, the second shot wasn't as bad and I experienced some mild pain for 2 days. If it prevents me from coming down with Shingles, then I guess it was worth it. The nurse who administered the shot did mention that a fair amount of people do experience varying degrees of pain with the shot.