Sorry, it will be a bit harsh, but your question is painfully unclear.
You need to tell us a bit more about your procedure. What have you measured? How? Also, measuring at room temperature and at 50 degrees (what degrees? C? F? K? R? I guess you mean °C, but you should state it unambiguously) is quite different than measuring _after_ keeping something for two weeks at 50 degrees. As we have no idea what you did, how can we help?
How do the antacib tables work? What is their composition? Why do you expect them to work differently at room temperature and at 50 degrees?