Mine wasn't. I had some very mild soreness at the shot site. I felt well enough to go to the gym 5 hours after my shot. Not to detract from people who did ha

Mine wasn't. I had some very mild soreness at the shot site. I felt well enough to go to the gym 5 hours after my shot. Not to detract from people who did have side-effects, merely pointing out that it's possible to have none.