1 year old Syntevol HP reaction

Hey,
I had a bottle of Syntevol HP in my closet, that I was using 1 year ago before I injured my shoulder, anyways, I wanted to use it since it still looked good and the lid was on tight, but the seal was broken. Anyways, after taking it (5pm), I pissed 7 - 10 times by 8pm and I pissed another 3-4 times before going to bed. I also had a stomach ache at the gym, around 8:30pm. What’s the deal? Does it go bad after a certain amount of time, or did I just react to it or what? This hasn’t happened before. Thanks.